Supply, Deliver, Install Test and Commission One (1) Unit Atomic Absorption Spectrophotometer

• Country: Brunei Darussalam
• Summary: Supply, Deliver, Install Test and Commission One (1) Unit Atomic Absorption Spectrophotometer
• BNT Ref No: 76307979
• Deadline: 10 Jan 2023
• Financier: Self Financed
• Purchaser Ownership: Government
• Tender Value: Refer Document
• Notice Type: Tender
• Document Ref. No.: KK/333/2022/DSS​
• Purchaser's Detail:
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• Description:
• Quotation are invited for Supply, Deliver, Install Test and Commission One (1) Unit Atomic Absorption Spectrophotometer with Mercury Vaporizer Unit (Aasmvu) for Food Chemistry Section, Department of Scientific Services, Ministry of Health NO. ITEM DESCRIPTIONS AND SPECIFICATIONS 1 GENERAL 1.1 One (1) complete set of equipment for the analysis of Heavy Metals and Trace Elements in a variety of food and food products as follow:  Atomic Absorption Spectrophotometer  Mercury Vaporizer Unit for high sensitivity mercury analysis by reduction and vaporization  Analytical standards and Chemicals with Certificate of Analysis  Data Management System  Operating Accessories 2 MAIN UNIT 2.1 Spectrophotometer must allow use of both coded high intensity Hollow Cathode Lamps and Electrode-less Discharge Lamps. 2.2 Photometer settings must be fully automatic (wavelength, slit width, etc.) assuring ease of operation and reproducibility with the use of the coded HCLs and EDLs 2.3 Include 2 units of Hollow Cathode Lamps for Mercury 2.4 Include 2 units of Hollow Cathode Lamps for Cadmium 2.5 Include 2 units of Hollow Cathode Lamps for Lead 2.6 Include 2 units of Hollow Cathode Lamps for Manganese 2.7 Include 2 units of Hollow Cathode Lamps for Copper 2.8 Include 2 units of Hollow Cathode Lamps for Zinc 2.9 Include 2 units of Hollow Cathode Lamps for Iron 2.10 Include 2 units of Hollow Cathode Lamps for Chromium 2.11 Include 2 units of Electrode-less Discharge Lamps for Arsenic 2 NO. ITEM DESCRIPTIONS AND SPECIFICATIONS 2.12 Include 2 units of Electrode-less Discharge Lamps for Selenium 2.13 Include 2 units of Electrode-less Discharge Lamps for Antimony 2.14 Spectrophotometer must be true double-beam flame operation where the sample and reference beams are measured simultaneously for enhanced precision and detection limits 2.15 Flame and furnace operation must be integrated into a single instrument minimizing space requirements. 2.16 Changeover from flame to furnace operation must be fully automatic via software, eliminating the risk of damage or possible injury 2.17 Optimization of flame or furnace position must be automatic via software for convenience and repeatability of analysis 2.18 Autosampler must be supplied with the Atomic Absorption Spectrometer 2.19 Monochromator must be Czerny-Turner in design. Number of grating grooves should be at least 1800 lines/mm with focal length of 300mm 2.20 Wavelength range should be at least 185 to 900nm 2.21 Photomultiplier tube as the detector 2.22 The adjustment of the lamp in any one of the eight (8) position lamp turret for its optimal position must be fully automatic 2.23 The system to be supplied with one (1) spare unit of Deuterium lamp 3 FLAME OPERATION 3.1 Gas flow controllers must be computer-controlled with automatic gas sequencing and oxidant and fuel monitoring and control 3.2 High intensity deterium arc background correction for non-graphite furnace techniques 3.3 Burner system must be fully automated computer-controlled including automatic burner position optimization 3.4 Burner position must be able to be stored by element and/or method for later recall and implementation yielding enhanced day-to-day reproducibility and ease of operation 3.5 Fuel and oxidant must be mixed within the burner system (not externally) for enhanced safety 3.6 Include burner chamber and burner head which is able to enhance safety and ensure maximum corrosion resistance 3.7 Safety interlocks against ignition must be provided for the following circumstances:  improper burner head installation or no burner head  insufficient gas pressure  improper and unsafe ratios of oxidant-fuel gases and  improper installation of nebulizer or end cap and drain system 3.8 Must be able to safely shutdown of flame upon power failure 3.9 Flame atomizer must be able to operate Air-C2H2, N2O-C2H2 flames with automatic changing between the two flame types 3 NO. ITEM DESCRIPTIONS AND SPECIFICATIONS 3.10 Include nebulizer capable of handling hydrofluoric acid containing samples 4 FURNACE ATOMIZER 4.1 Heating temperature range must be from ambient to 3,000°C 4.2 Must be provided with 2 gas inlets (1 for inert gas-Argon and 1 for oxidative gas-Air) 4.3 Heating control system should have digital temperature control using optical sensor 4.4 Inner gas flow rate range of 0 to 1.50 L/min with capability to perform automatic switching of 2 gas types in single method 4.5 Heating program must allow to set up to 20 stages with either ramp or step heating mode 4.6 Must include additional (on top of the standard consumbles given):  5 sets of 10pcs graphite tube, normal  5 sets of 10pcs graphite tube, pyrolytic 5 AUTOSAMPLER 5.1 Should be directly triggered from the AAS main unit having completely software controlled operation. 5.2 Autosampler must accomodate at least 60 vials position (≥15ml) for sample and 8 vials position (50ml) for standards. 5.3 Autosampler should permit access to any vial location of samples and standards 5.4 Rinse port with overflow wash mechanism to avoid any carryover or contamination from autosampler probe between two sample runs 5.5 Include 1000pcs of 15ml PP Autosampler Vials 5.6 Include 1000pcs of 50ml PP Autosampler Vials 5.7 Include 2 rinse bottle containers of more than 2L size 5.8 Include at least 500 pipette tips for dispensing 6 FLOW INJECTION ACCESSORY 6.1 The flow injection accessory must be automatic and fully controlled via software of the main computer-controlled AAS 6.2 It should comprises of 1 compact single unit capable of accomplishing the following tasks: Mercury Cold Vapor Technique and Hydride Generation Technique 6.3 The accessory should consist of 1 peristaltic pump and a switching valve 6.4 The speed of revolution is user-selectable revolution speed of 20 to 120rpm
• Documents:

 Tender Notice