Supply of HPLC and GC Systems for the Committee for Sanitary-Epidemiological Welfare and Public Health (SES) of the Republic of Uzbekistan.

New clarification added: Q35: Please provide the revised document "TB_2026_63738_Section III_Returnable Bidding Forms_Form D_Technical Bid Form" in order to prepare the returnable form in accordance with the clarifications provided.  A35: Please be advised the revised document titled "ITB_2026_63738_Section III_Returnable Bidding Forms_Form D_Technical Bid Form_Rev1_05Aug2026" that introduces amendments (in red font.) made to certain technical requirement lines has been uploaded in the "Documents" section of the ITB. 

New amendment added #2: The ITB has been further amended in order to replace the document titled "ITB_2026_63738_Section III_Returnable Bidding Forms_Form D_Technical Bid Form" with the document titled "ITB_2026_63738_Section III_Returnable Bidding Forms_Form D_Technical Bid Form_Rev1_05Aug2026" that introduces amendments (in red font.) made to certain technical requirment lines.

New clarification added: Q34: Due to the substantial volume of clarification‑related content and extensive revisions required, we kindly request the tendering authority to extend both the clarification deadline and the bid submission deadline.  A34: No further extension of dealines for requests for clarifications and bid submissions is considered due to the project timelines set.

New clarification added: Q33: Please consider extending the deadline for requests for clarification, to ensure that all tender specifications are confirmed and unambiguous prior to bid submission.  A33: The deadline for submission of clarification requests has been extended from 22 July 2026, 07:00 UTC to 7 August 2026, 07:00 UTC hence the deadline for submission of bids has also been extended from 31 July 2026, 07:00 UTC to 14 August 2026, 07:00 UTC.  

New clarification added: Q32: Reference is made to technical requirement line 32 for Lot #2 "Operating temperature range of the sample storage compartment: from 4°C to 40°C. Presence of sample thermostating function in the autosampler in accordance with the manufacturer's technical documentation".  Please consider revising the temperature as "from 4°C to min 35°C" for below reasons: 1. From the perspective of analytical standards, the temperature range of 35–40°C has no practical application scenarios. This project involves testing environmental samples containing PFAS and antibiotics. Both international EPA standards and domestic HJ standards uniformly require samples to be stored at 4–6°C under dark and low-temperature conditions. Temperatures above 35°C will cause the degradation of target analytes and microbial proliferation, which compromises quantitative test results. The 35–40°C range will never be adopted in routine laboratory testing. The 40°C upper limit specified in the tender is merely a redundant parameter and will not impair core analytical performance.2. When benchmarked against top-tier brands, the 4–35°C temperature range is a mature industry standard configuration. This configuration has long been deployed in numerous environmental and trace analysis laboratories worldwide, validated by international projects, and fully meets the testing requirements for PFAS, antibiotics and analogous analytes. A32:In order to ensure broader competition, this requirement will be revised and read as: "Operating temperature range of the sample storage compartment: from 4°C to 35°C or wider. Presence of sample thermostating function in the autosampler in accordance with the manufacturer's technical documentation."

New clarification added: Q31: Reference is made to technical requirement line 38 for Lot #2 "Temperature maintenance accuracy throughout the volume of the thermostated column compartment no more than 0.1 °C ". All mainstream commercial analytical HPLC column ovens specified within 0.5 ~ 1.0 °C across all these brands such as waters, Thermo, Agilent,Shimadzu. The ≤0.1°C uniformity specification is ultra-high standard and not common for standard analytical HPLC. So we would like to kindly propose a reasonable adjustment on this specification for your evaluation: Could we relax this requirement to ≤0.5~1.0 °C temperature uniformity inside the column compartment?  A31: In order to ensure broader competition, this requirement will be revised and read as: Temperature uniformity throughout the volume of the thermostated column compartment: not more than ±0.5 °C.

New clarification added: Q30: Reference is made to technical requirement section B for Lot #2 "Equipment composition:" It is noticed that items listed section B is missing  Post-column derivatization, however, in line 79, the Post-column derivatization is required. Please confirm whether the Post-column derivatization is required or not.  Q30: A post-column derivatization system is required as part of the supplied HPLC system. Technical requirements will be revised accordingly.

New clarification added: Q29: Reference is made to technical requirement line 52 for Lot #2 "Wavelength setting accuracy: no more than ±2 nm". With a spectral bandwidth of 20 nm, the wavelength setting accuracy of ±2 nm is significantly too low and, while it does not affect the quality of the measurements, it completely restricts competition. It is requested that this parameter be changed to “no more than ±3 nm.”  A29: Accepted. The specified wavelength setting accuracy will be revised to “no more than ±3 nm.” 

New clarification added: Q28: Reference is made to technical requirement line 47 for Lot #2 "Baseline drift no more than 0.5*10^-3 AU at 254 nm". This level of baseline fluctuation is demonstrated under ideal conditions and cannot be achieved under normal operating conditions. We request that the value be changed to “no more than 1.0 × 10⁻³ AU at 254 nm.”  A28: Please note that the clarification request appears to refer to an incorrect item. The request cites Lot 1: HPLC with FLD and RID detectors, whereas line 47 corresponds to Lot 2: HPLC with DAD and FLD detectors. Line 47 specifies baseline drift, while the clarification request refers to baseline fluctuation (noise). These are different performance parameters. Baseline drift characterizes the long-term stability of the detector, whereas baseline fluctuation (noise) characterizes short-term signal variations. The specified baseline drift requirement is considered appropriate for the intended applications and is consistent with the performance of modern diode array detectors. Therefore, the requirement will remain unchanged.

New clarification added: Q27: Reference is made to technical requirement line 44 for Lot #2 " Wavelength reproducibility — no more than ±0.1 nm". What is the difference between the parameters in items 43 and 44? It is proposed to remove item 44. A27: Lines 42 and 43 specify two different performance characteristics of the refractive index detector. Line 43 refers to baseline noise, which characterizes short-term signal fluctuations and detector sensitivity, while line 44 refers to baseline drift, which characterizes the long-term stability of the detector over time. Both parameters are standard performance specifications for refractive index detectors and are required to assess overall detector performance. Therefore, the requirement will remain unchanged.

New clarification added: Q26: Reference is made to technical requirement line 30 for Lot #2 "Cross-contamination level no more than 0.0025% with caffeine solution". This parameter is demonstrated using chlorhexidine, which is much more difficult to remove than caffeine. Would this constitute a non-compliance with the technical specifications?  A26:Equivalent performance demonstrated using another recognized test compound (e.g. chlorhexidine), under the manufacturer's standard test conditions, will be considered acceptable, provided that the demonstrated carryover performance is equivalent to or better than the specified requirement. Technical Requirements will be updated and read as follows: "Cross-contamination level: not more than 0.0025%, demonstrated using caffeine or another recognized test compound under the manufacturer's standard test conditions, provided that the demonstrated performance is equivalent to or better than the specified requirement."

New clarification added: Q25: Reference is made to technical requirement line 79 for Lot #1 "Post-column derivatization system for mycotoxins analysis: Reagent pump - 2 pcs. Reaction thermostat - 1 pc. All connection tubing - 1 kit. Pump and thermostat controller - 1 pc. Pump and thermostat must be controlled via software, and HPLC method should include all parameters, not manually". The sensitivity of the fluorescence detector is sufficient for the determination of mycotoxins. Post-column derivatization is not necessary. It is requested that this item be excluded from the scope of supply, especially since such an accessory is not included in Section B (Equipment composition)  A25:The post-column derivatization system is required to support analytical methods where enhanced fluorescence response is necessary for the determination of specific analytes, including certain mycotoxins. Therefore, the Equipment Composition and the corresponding technical requirements will be revised to explicitly include a complete post-column derivatization system.

New clarification added: Q24: Reference is made to technical requirement line 49 for Lot #1 "Wavelength setting accuracy: no more than ±2 nm". With a spectral bandwidth of 20 nm, the wavelength setting accuracy of ±2 nm is significantly understated and does not affect the quality of the measurements, but it restricts competition. We request that this parameter be changed to “no more than ±3 nm.”  A24: Accepted. The specified wavelength setting accuracy will be revised to “no more than ±3 nm.”

New clarification added: Q23: Reference is made to technical requirement line 30 for Lot #1 "Cross-contamination level no more than 0.0025% with caffeine solution". This parameter is demonstrated using chlorhexidine, which is significantly harder to remove than caffeine. Would this constitute a non-compliance with the technical specifications?  A23: Equivalent performance demonstrated using another recognized test compound (e.g. chlorhexidine), under the manufacturer's standard test conditions, will be considered acceptable, provided that the demonstrated carryover performance is equivalent to or better than the specified requirement. Technical Requirements will be updated and read as follows: "Cross-contamination level: not more than 0.0025%, demonstrated using caffeine or another recognized test compound under the manufacturer's standard test conditions, provided that the demonstrated performance is equivalent to or better than the specified requirement."

New clarification added: Q22: Reference is made to technical requirement line 75 for Lot #1 "Set of chromatographic columns and guard systems:  - Column C18 (type 1): analytical column with reversed-phase sorbent C18 (octadecylsilane), internal diameter: 4.6 mm, length: 150 mm, sorbent particle size: 5 µm — not less than 2 pcs.  - Column C18 (type 2): analytical column with reversed-phase sorbent C18 (octadecylsilane), internal diameter: 4.6 mm, length: 250 mm, sorbent particle size: 5 µm — not less than 2 pcs.  - Column LC-PAH (type 1): specialized analytical column for separation of polycyclic aromatic hydrocarbons (PAH / PAH), internal diameter: 4.6 mm, length: 150 mm, sorbent particle size: 5 µm — not less than 2 pcs.  - Column LC-PAH (type 2): specialized analytical column for separation of polycyclic aromatic hydrocarbons (PAH / PAH), internal diameter: 4.6 mm, length: 250 mm, sorbent particle size: 5 µm — not less than 2 pcs.  - Column Amino (type 1): analytical column with aminopropyl stationary phase (Amino / NH2) for analysis of carbohydrates (sugars), internal diameter: 4.6 mm, length: 250 mm, sorbent particle size: 3.5 µm — not less than 2 pcs.  - Column Amino (type 2): analytical column with aminopropyl stationary phase (Amino / NH2) for analysis of carbohydrates (sugars), internal diameter: 4.6 mm, length: 250 mm, sorbent particle size: 5 µm — not less than 2 pcs.  - Guard columns and holders (Guard Column System): each of the above analytical columns must be equipped with a compatible universal guard column holder (total not less than 2 holders in the system kit) and replaceable guard column cartridges with a sorbent type strictly corresponding to the main analytical column (C18, PAH, Amino) — not less than 2 spare guard column cartridges for each type of column." The specification states that each analytical column must be equipped with a compatible universal guard column holder, while also noting "total not less than 2 holders in the system kit". Given that guard column holders with matching internal diameter are interchangeable across analytical columns of the same sorbent type, there are three possible interpretations of the required total quantity: 12 holders in total: one holder for each individual analytical column unit (6 column models × 2 units per model); 6 holders in total: 2 holders per sorbent category (C18, LC-PAH, Amino), shared across columns of the same sorbent type; 2 holders in total: the minimum quantity stated for the entire system kit. Please explicitly confirm the total required number of guard column holders for the complete scope of supply, and advise whether holders may be shared between columns of identical sorbent type.Additionally the specification requires "not less than 2 spare guard column cartridges for each type of column", with sorbent type strictly corresponding to the main analytical column.We seek formal confirmation on the definition of "each type of column" in this clause: If it refers to the 3 broad sorbent categories (C18, LC-PAH, Amino), the total requirement would be 6 spare cartridges (2 per category); if it refers to all 6 individual analytical column models (C18 Type 1, C18 Type 2, LC-PAH Type 1, LC-PAH Type 2, Amino Type 1, Amino Type 2), the total requirement would be 12 spare cartridges (2 per model). Please specify the total required quantity of spare guard column cartridges across the full column set.  A22:The required Guard Column System shall include not less than two (2) reusable guard cartridge holders, compatible with the offered analytical columns. The holders may be used interchangeably with analytical columns of compatible dimensions and connection type.To eliminate ambiguity, the requirement will be amended as follows:Set of chromatographic columns and guard column system: Column C18 (Type 1): analytical column with reversed-phase C18 (octadecylsilane) stationary phase, internal diameter 4.6 mm, length 150 mm, particle size 5 µm — not less than 2 pcs.; Column C18 (Type 2): analytical column with reversed-phase C18 (octadecylsilane) stationary phase, internal diameter 4.6 mm, length 250 mm, particle size 5 µm — not less than 2 pcs.;Column LC-PAH (Type 1): analytical column for separation of polycyclic aromatic hydrocarbons (PAH), internal diameter 4.6 mm, length 150 mm, particle size 5 µm — not less than 2 pcs.;Column LC-PAH (Type 2): analytical column for separation of polycyclic aromatic hydrocarbons (PAH), internal diameter 4.6 mm, length 250 mm, particle size 5 µm — not less than 2 pcs.;Column Amino (Type 1): analytical column with aminopropyl (NH₂) stationary phase for carbohydrate analysis, internal diameter 4.6 mm, length 250 mm, particle size 3.5 µm — not less than 2 pcs.;Column Amino (Type 2): analytical column with aminopropyl (NH₂) stationary phase for carbohydrate analysis, internal diameter 4.6 mm, length 250 mm, particle size 5 µm — not less than 2 pcs. Guard Column System. Universal guard column holders: not less than 2 pcs., compatible with the offered analytical columns. The holders may be used interchangeably with analytical columns having compatible dimensions. Guard column cartridges: not less than 2 cartridges for each column type specified above, fully compatible." The solicitation documents will be amended accordingly. 

New clarification added: Q21: Reference is made to technical requirement line 39 for Lot #3 "Detectivity: not less than 1.1 fg/s.". Please confirm whether this parameter is specified correctly; we have some doubts about the unit of measurement for this item.  A21:Technical Requirements will be revised and read as follows: Detectivity: not more than 3 fg/s (lindane).

New clarification added: Q20: Reference is made to technical requirement line 94 for Lot #3 "GC column BPX-70 (length 50 m, with internal diameter 0.22 mm, liquid phase film thickness 0.25 µm) - 2 pcs.". The inclusion of brand names in the technical specifications is not permitted. The type of phase applied to the column must be specified.  A20:Technical Requirements will be revised by replacing the brand-specific column designation with a description of the required stationary phase or an equivalent column providing comparable chromatographic performance.

New clarification added: Q19: Reference is made to technical requirement line 93 for Lot #3 "GC column SP-2340 (length 60 m, with internal diameter 0.25 mm, liquid phase film thickness 0.20 µm); - 2 pcs." The inclusion of brand names in the technical specifications is not permitted. The type of phase applied to the column must be specified.  A19: Technical Requirements will be revised by replacing the brand-specific column designation with a description of the required stationary phase or an equivalent column providing comparable chromatographic performance.

New clarification added: Q18: Reference is made to technical requirement line 92 for Lot #3 "GC column with high-polarity stationary phase FAME (length 100 m, with internal diameter 0.25 mm, liquid phase film thickness 0.20 µm); - 2 pcs." FAME is the substance being analyzed; the type of phase applied to the column must be specified.  A18:Technical Requirements will be revised and read as follows: "GC column with high-polarity cyanopropyl polysiloxane stationary phase (or equivalent) (length 100 m, with internal diameter 0.25 mm, liquid phase film thickness 0.20 µm) suitable for the separation and analysis of cis/trans fatty acid methyl esters (FAME) - 2 pcs."

New clarification added: Q17: Reference is made to technical requirement line 91 for Lot #3 "GC column Stabilwax-DA GC, 60 m, internal diameter 0.25 mm, 0.50 µm 2 pcs." The inclusion of brand names in the technical specifications is not permitted. The type of phase applied to the column must be specified.  A17:Technical Requirements will be revised by replacing the brand-specific column designation with a description of the required stationary phase providing comparable chromatographic performance.

New clarification added: Q16: Reference is made to technical requirement line 85 for Lot #3  "Sample injection injector – 1 pc." The Technical Specifications describe two sample introduction devices. However, only one is specified here; based on the subsequent descriptions, this appears to be an S/Sl injector. What type of sample introduction device should be installed? Additionally, the Technical Specifications describe a vapor-phase sampler, which is not included in the scope of supply. It is proposed to remove the equipment not included in the scope of supply from the Technical Specifications.  A16: Regarding the sample injection devices (injectors): the gas chromatograph shall be equipped with two injectors Split/Splitless (S/SL) and PTV injector. Therefore Line 85 will be revised accordingly. The request to exclude the headspace autosampler cannot not be accepted, as the headspace autosampler constitutes a mandatory and integral component of the system and is required to perform high-precision analyses of alcoholic beverages and the determination of volatile organic impurities in accordance with the End user's operational requirements. Amendments will be introduced to Line 57 of the Technical requirements (Form C) by adding detailed technical characteristics of the headspace autosampler.

New clarification added: Q15: Reference is made to technical requirement line 57 for Lot #3  "Headspace autosampler. The sampler will be used for alcohol analysis, so each company can provide a model that can perform this type of analysis." The headspace autosampler is not included in the scope of delivery. We propose removing it from the technical specifications. If it is required, please specify its technical characteristics (injection method, number of samples, operating temperatures, etc.).  A15: The request to exclude the headspace autosampler cannot not be accepted, as the headspace autosampler constitutes a mandatory and integral component of the system and is required to perform high-precision analyses of alcoholic beverages and the determination of volatile organic impurities in accordance with the End user's operational requirements. Amendments will be introduced to Line 57 of the Technical requirements (Form C) by adding detailed technical characteristics of the headspace autosampler. The revised version of Line 57 is provided below: "Automatic Headspace Sampler for the analysis of ethanol, methanol, and volatile organic impurities in alcoholic beverages by gas chromatography. Sample introduction method: Valve-and-loop injection system with electronically controlled carrier gas pressure and/or flow (EPC, AFC or equivalent), designed to minimize sample carry-over Tray/Carousel capacity: Automatic carousel or linear tray accomodating at least 40 vials. Supported vial sizes: standard 10 mL and 20 mL headspace vials. Sample thermostat (incubator): - Capacity: At least 6 vials simultaneously. - Temperature range: From +40 °C to at least +200 °C.Temperature stability: not more than ±0.2 °C. Transfer line temperature: Programmable up to at least +210 °C. Safety features: automatic gas system leak test performed prior to each sample injection. Compatibility and integration: Full hardware and software compatibility with the offered gas chromatograph. The headspace sampler shall be fully controlled through the main GC system/software."

New clarification added: Q14: Reference is made to technical requirement line 56 for Lot #3 "Maximum injector temperature, °C, no less than 450". What is the rationale for requiring such a high temperature for the sample injection device? The normal operating temperature of this device is 250–300 °C. The 450 °C requirement was included to minimize competition. It is requested that it be changed to “not less than 400 °C.”  A14:To broaden competition, the maximum injector temperature requirement will be revised to "not less than 400°C".

New clarification added: Q13: Reference is made to technical requirement line 52 for Lot #3 "Modular design of the injector allows it to be removed quickly and easily without special tools and to carry out regular maintenance and necessary replacements." During normal operation, rapid replacement of the sample introduction device is not required. Any sample introduction device on instruments from any manufacturer can be replaced quickly. It is requested that this item be removed, as it restricts competition.  A13:The requirement is intended to ensure ease of maintenance and minimize instrument downtime during routine servicing. Such feature is available on multiple advanced GC systems from different manufacturers, therefore this requirement will remain unchanged.

New clarification added: Q12: Reference is made to technical requirement line 50 for Lot #3 "Quick-change modular split/splitless injector with digital pressure and flow control (constant pressure and flow rate, programmable pressure and flow rate) with a septum purge gas economy system." During normal operation, rapid replacement of the sample introduction device is not required. Any sample introduction device on instruments from any manufacturer can be replaced quickly. It is requested that this item be removed, as it restricts competition.  A12: The requirement is intended to ensure ease of maintenance and minimize instrument downtime during routine servicing. Such feature is available on advanced GC systems from different manufacturers, therefore this requirement will remain unchanged.

New clarification added: Q11: Reference is made to technical requirement line 32 for Lot #3 "Maximum temperature: not less than 450 °C". What is the rationale for requiring such a high temperature for the sample injection device? The typical operating temperature of this device is 250–300 °C. Requiring a temperature of 450 °C will completely restrict competition. It is requested that this be changed to “not less than 400 °C.”  A11:To broaden competition, the maximum injector temperature requirement will be revised to "not less than 400°C." 

New clarification added: Q10: Reference is made to technical requirement line 29 for Lot #3 "Temperature programming at a rate up to 900 °C/min". What is the rationale for requiring such a high heating rate for the sample introduction system? The typical operating rate does not exceed 500 °C/min. Requiring such a high heating rate completely restricts competition. It is requested that this be changed to “at a rate up to 700 °C/min.”  A10:To broaden competition the minimum heating rate requirement will be revised to "not less than 700 °C/min".

New clarification added: Q9: Reference is made to technical requirement line 21 for Lot #3: "PTV Injector availability:". The PTV injector is not included in the configuration with the technical specifications you requested. It is  suggested to remove it from the technical specifications.  A9:The PTV injector is required to support advanced sample introduction techniques, including large-volume injection, solvent vent injection, and the analysis of thermally labile compounds, thereby expanding the analytical capabilities of the system for current and future laboratory applications. Therefore this requirement will remain unchanged.

New clarification added: Q8: Reference is made to technical requirement line 20 for Lot #3 "Total flow setting range: from 0 to 500 ml/min N2 or Ar; from 0 to 1 500 ml/min H2 or He". What is the rationale for this maximum flow rate requirement? Typical operating values for total flow rarely exceed 500 ml/min for helium. The 1,500 ml/min flow rate requirement is intended solely to limit competition. It is  requested that this be changed to “from 0 to 1,200 ml/min of H₂ or He.”  A8:The requirement is intended to ensure sufficient pneumatic capacity for advanced injection techniques, high split ratios, pressure pulsing and rapid system purging. Nevertheless, to broaden competition while maintaining the required functionality, the maximum flow rate requirement will be revised to not less than 1200 mL/min.

New clarification added: Q7: Reference is made to technical requirement line 19 for Lot #3 "Maximum temperature: not less than 450 °C". What is the rationale for requiring such a high temperature for the sample injection device? The typical operating temperature of this device is 250–300 °C. We request that this be changed to “not less than 400 °C.”  A7: To broaden competition, the maximum injector temperature requirement will be revised to "not less than 400°C".

New clarification added: Q6: According to ITB_2026_63738, Section III – Returnable Bidding Forms, Form D – Technical Bid Form, Lot 2: HPLC with DAD and FLD detectors, S/N 80 states: "The supplier (if necessary) is obliged to equip the offered equipment… with all necessary spare parts… The list of such spare parts must be presented in the tender offer." S/N 81 states: "The supplier (if necessary) must complete the equipment… with all necessary spare parts…" S/N 82 states: "The list of such spare parts must be presented as part of the competitive offer." Clarification is requested as to whether these requirements are intended to be complementary or duplicative, and to confirm the exact documentation that bidders are required to submit regarding the spare parts to be supplied during the warranty period.  A6:The requirement for Lot 2, line 81 was mistakenly included, it will be revised and read as follows: "The supplier (if necessary) must complete the equipment (taking into account the specifics of the offered model) with all necessary parts, components, materials (the cost of which must be included in the tender offer) for assembly, installation and commissioning at the workplace. The completeness must ensure the full functioning of the declared equipment." As for the requirement under line 82 the Bidder shall include in his offer and present a standard list of spare parts recommended by the manufacturer which may be required for maintenance of equipment for the period of warranty or may submit a statement confirming that all spare parts necessary for maintenance of the offered system during the warranty period will be supplied by the Supplier free of charge. The Technical Requirements will be updated accordingly. 

New clarification added: Q5: According to ITB_2026_63738, Section III – Returnable Bidding Forms, Form D – Technical Bid Form, Lot 2: HPLC with DAD and FLD detectors, S/N 69 states: "Autosampler syringes: dosing syringes (microsyringes) for sample injection assembly, fully compatible with the design of the offered autosampler — not less than 2 pcs." Clarification is requested as to whether this requirement may be revised to read "Autosampler syringes: dosing syringes (microsyringes) for sample injection assembly, fully compatible with the design of the offered autosampler — not less than 2 pcs. (if a syringe-based injection system is used)", to accommodate HPLC systems utilizing alternative injection technologies.  A5:The suggested revision to the requirement is accepted. The requirement will be amended and read as follows: "For autosamplers utilizing a syringe-based injection system, the Supplier shall provide not less than two spare dosing syringes (microsyringes) compatible with the offered autosampler."

New clarification added: Q4: According to ITB_2026_63738, Section III – Returnable Bidding Forms, Form D – Technical Bid Form, Lot 2: HPLC with DAD and FLD detectors, S/N 3 states: "Liquid chromatograph — 1 pc." Clarification is requested as to whether this requirement refers to the complete HPLC system equipped with the DAD and FLD detectors specified in the Technical Specification, or only to the main chromatograph unit.  A4:The "Liquid chromatograph — 1 pc" line refers to the complete HPLC system with the DAD and FLD detectors. The subsequent lines specify the required modules and components comprising the complete system configuration. Technical requirements will be updated accordingly to more clearly reflect the complete scope of supply.

New clarification added: Q3: According to ITB_2026_63738, Section III – Returnable Bidding Forms, Form D – Technical Bid Form, Lot 1: HPLC with FLD and RID detectors, S/N 69 states: "Autosampler syringes: dosing syringes (microsyringes) for sample injection assembly, fully compatible with the design of the offered autosampler — not less than 2 pcs." Clarification is requested as to whether this requirement may be revised to apply only where a syringe-based injection system is used.  A3:The suggested revision to the requirement is accepted. The requirement will be amended and read as follows: "For autosamplers utilizing a syringe-based injection system, not less than two spare dosing syringes (microsyringes) compatible with the offered autosampler shall be included."

New clarification added: Q2: According to ITB_2026_63738, Section III – Returnable Bidding Forms, Form D – Technical Bid Form, Lot 1: HPLC with FLD and RID detectors, S/N 63 states: "All standards must be certified reference material (ISO 17034)… Polycyclic aromatic hydrocarbons (PAH): Benzo(a)pyrene, 1,12-Benzperylene, Benz(a)anthracene… Carbohydrates: Fructose, Sucrose, Lactose, Glucose." Clarification is requested as to the required quantity for each PAH reference standard and the required concentration/specification (µg/ml) and quantity for each carbohydrate reference standard.  A2:The required quantity of certified reference standards is two ampules/vials of each of the following types: Polycyclic aromatic hydrocarbons (PAH): - Benzo(a)pyrene, concentration 100 µg/mL - 1,12-Benzperylene, concentration 100 µg/mL - Benz(a)anthracene, concentration 100 µg/mL. Concentrations of the above standards shall be as specified above or an equivalent commercially available certified concentration, suitable for instrument commissioning, performance verification and initial analytical validation. Carbohydrates: - Fructose, neat, at least 100 mg - Sucrose, neat, at least 100 mg - Lactose, neat, at least 100 mg - Glucose, neat, at least 100 mg.The Technical requirements will be updated accordingly.

New clarification added: Q1:According to ITB_2026_63738, Section III – Returnable Bidding Forms, Form D – Technical Bid Form, Lot 1: HPLC with FLD and RID detectors, S/N 3 states: "Liquid chromatograph – 1 pc." Clarification is requested as to whether this item refers to the complete HPLC system integrated with FLD and RID detectors or only the main HPLC unit.  A1:The "Liquid chromatograph — 1 pc" line refers to the complete HPLC system with RID and FLD detectors. The subsequent lines specify the required modules and components comprising the complete system configuration. Technical requirements will be updated accordingly to more clearly reflect the complete scope of supply.

New amendment added #1: This ITB is hereby amended as follows:The deadline for submission of clarification requests is hereby extended from 22 July 2026, 07:00 UTC to 7 August 2026, 07:00 UTC.The deadline for submission of bids is hereby extended from 31 July 2026, 07:00 UTC to 14 August 2026, 07:00 UTC.All other terms and conditions of this ITB shall remain unchanged.