Gauhati University Tender

Laboratory Items

PC based True double beam UV-Visible Spectrophotometer Specification: 1. Optical system: Czerny-Turner mounting, Single monochromator, Double- beam system, 1,300 lines/mm, 240 nm blazed holographic grating 2. Light source: Deuterium lamp and Tungsten-Halogen lamp 3. Detector: R-928 Photomultiplier tube 4. Wavelength range: 185 to 900 nm or higher 5. Wavelength accuracy: ±0.1 nm (656.1 nm) 6. Wavelength repeatability: ±0.05 nm 7. Spectral bandwidth: 0.1, 0.2, 0.5, 1, 2, 5 nm in steps 8. Resolution: 0.1 nm 9. Stray light: Max. 0.005 %T (220 nm NaI) 10. Mode: Abs, %T, %R, 11. Photometric range: -5 to 5 Abs 12. Noise level: 0.00003 Abs RMS (500 nm) 13. Wavelength slew rate: 14000 nm/min 14. Wavelength scan rate: 4000 to 0.5 nm/min 15. Below items must be supplied along with the main instrument: a) One Pair of cuvettes, 10 mm path length, 3.5 ml volume b) Integrating Sphere Attachment Wavelength range: 220 nm to 850 nm or better i) Samples like Powder, Solid, colloidal sample, Thin Film etc are measured by using this accessory ii) Minimum Inner diameter of integrating sphere: 60 mm c) Branded i5 PC with Original OS- 1 no

Class II, Type A2 Bio-safety Cabinet Specification: 1. The Bio-safety cabinets should be 4 feet width with front window must be a 10” sash opening and steel with smart coat interior 2. The Bio Safety Cabinet must include DC motors. 3. The motor must automatically adjust the airflow speed without the use of a damper to ensure continuous safe working conditions, even without maintenance adjustments. 4. Cabinet must use a pressure sensor (rather than anemometer) to detect pressure drop across the supply filter, rather than in just one point across the down flow. 5. The cabinet should display the inflow and down flow air velocities and must incorporate an LED Indicator, visual & audible alarm to indicate excessive HEPA filters loading, blower failure, airflow speed failure, Incorrect window position. 6. The front of the cabinet must be angled 10º to help minimize glare. 7. The cabinet noise level must be less than 65 dB(A) for a 4-foot cabinet. 8. Cabinet with lights on and fan at operating speed should consume less than 400 watts or less 9. The cabinet must automatically reduce fan/blower motor speed to 30% when the front window sash is in closed position to ensure reduced energy consumption when the cabinet is not is use. 10. UV light must be programmable to allow for specific exposure times from 0 to 24 hours. 11. The Cabinet should have provision to fit taps for Vacuum, Water and Non-combustible gas. 12. The Bio safety Cabinet should be NSF certified with listing on NSF website. 13. The Bio safety cabinet should incorporate HEPA filter of the class H 14 EN 1822 or better and having minimum efficiency of 99.995% at 0.3 µm particle size. 14. Ventilation System Exhaust and Inflow air volume approx 300-350 CFM 15. Audible and visual Alarms for HEPA filter failure, blower failure, airflow speed failure, Incorrect window position. 16. The cabinet should be provided with fixed / adjustable Height Stand, UV Light and one set of detachable arms rest and one / two electrical outlet. 17. The Drain Pan of the BSC should be made of Stainless Steel. The drain pan should not be painted, or power coated. 18. Cabinet should be CE certified and declaration of MOC should be provided. 19. Port provision for clean and safe routing for vacuum tubing and cables through the side of the BSC for improved organization and work efficiency.