request for proposal from uv-visible double beam spectrophotometer manufacturers for supplying ultra pure double beam ( uv- visible wave length range ) spectrophotometer with one year guarantee and five years comprehensive maintenance contract for 24 request for proposal from uv-visible double beam spectrophotometer manufacturers for supplying ultra pure double beam ( uv- visible wave length range ) spectrophotometer with one year guarantee and five years comprehensive maintenance contract for 24 , technical specification of double beam ( uv-visible wavelength range ) spectrophotometer-optical system -double beam- ( uv-visible wavelength range ) , diffraction grating-minimum 1200 lines / mm , photometric details-range-must cover from-0.3 to +3, accuracy-must cover minimum range=±0.002 absorbanceat 1 absorbance, stray light-< 0.05 %t@220, 340 ( must cover less than 370nm ) , baseline flatness-must cover± 0.006a, detector-photodiodes / single photodiodes / dual silicon photodiodes, power-240v± 10%, 50 / 60hz, light source-xenon flash lamp , wavelength details-range- must cover 190nm to 1100nm, accuracy-must cover ±0.2nm, repeatability-must cover±0.005nm, resolution-below or upto 0.1, bandwidth-must cover 1.0 nm, measuring modes- absorbance, transmittance ( % ) , concentration, operating modes- single wavelength, multiplewavelength, time scan, data presentation- display of analysis results & graphic data on the screen, pc link software, port for data transfer, upplier should provide service for installation, demonstration, training for all operation procedure, temperature range-operating conditionsshould cover +10 degree c to 40 degreec, analytical quality assurance- instrument should have internal analytical quality assurance system with additional options for customizing the analytical quality assurance tools, certification- must comply ce certification , accessories :-quartz cuvettes-50mm length , 10mm , 20 mm path length / width, cuboidal ( each 2 pairs ) glass cuvettes-50mm length, 20 mm, 10mm path length / width, cuboidal ( each 4 pairs ) , cuvette holder-for holding 50mm rectangular cuvettes ( 2 nos. ) , personal computer-must be an iso certified and branded and should be suitable for assembling quoted spectrophotometer-display size-50- 60.45cm, windows-original windows 10, compatible to support software to run uv-visible spectrophotometer, memory-minimum 4gb, processor-i3 / i5 processor, graphics-integrated graphics, hard drive-1tb ( 1 terabyte ) computer accessories-mouse, key board, central processing unit ( cpu ) , other accessories-ups and battery-2 kva online ups 192 v with inbuilt isolation transformer, battery 65ah 12v-should be an iso certified and compatible for using quoted spectrophotometer , comprehensive maitenance contract ( for s.n.1&2 )