e-tender for procurement of uv-vis spectrophotometer with diffuse reflectance spectra facility (integrating sphere attachment) e-tender for procurement of uv-vis spectrophotometer with diffuse reflectance spectra facility (integrating sphere attachment) , procurement of uv-vis spectrophotometer with diffuse reflectance spectra facility (integrating sphere attachment) , specifications: (please refer to tender document for complete specifications) • spectrophotometer should be supplied with original manufacturer or through the authorized distributor only having facility to provide after sales service and support; the spectrometer should be fully pc controlled true double beam with option of sample and reference measurement simultaneously. the spectrometer should have facility to measure wide samples type both in transmission mode and reflectance mode using suitable accessories. spectrometer must have single monochromator with 1200 lines/ mm blazed holographic grating in aberration-corrected czerny-turner mounting. the detector should be photomultiplier tube (pmt). wavelength range: 185 - 900nm (220 to 1,400 nm when integrating sphere attachment is used.) wavelength accuracy:±0.3 nm, all range ±0.07 nm 656.1 nm d2, ±0.3 nm, all range. wavelength repeatability: ±0.01nm. wavelength scan rate:about 4000 to 0.5nm/min. noise level: 0.000015 abs or less (500 nm). lamp interchange wavelength: auto switching synchronized with wavelength, switching range selectable between 290 - 370nm (0.1nm units). spectral bandwidth: 0.1, 0.2, 0.5, 1, 2, 5 nm; l2, l5 (low stray-light mode). resolution: 0.1nm. stray light: 0.002% or less (220 nm, nai); 0.00025% or less (340 nm, 370 nm, nano2); 0.2% or less (198 nm, kcl). light source: stable light source with option of 50w halogen lamp & deuterium lamp. equipment must include light source with auto position adjustment built in photometric range: -5 to 5 abs (display range ±10abs, ±1012%). photometric accuracy: ±0.0015 abs (0.5 abs); ±0.002 abs (1.0 abs); ±0.004 abs (2.0 abs); ±0.3%t measured with nist 930d/nist1930 or equivalent filter. photometric repeatability: ±0.0002 abs or less (0.5 abs); ±0.0003 abs or less (1 abs); ±0.0004 abs or less (2 abs); ±0.1%t. baseline flatness: within ±0.00015 abs (200~860 nm). baseline stability: 0.00015 abs/h or less (700 nm). accessory to be quoted along with system. 10 mm pathlength quartz cuvettes of 1 ml capacity should be provided. integrating sphere attachment includes two detectors: a photomultiplier tube and ingaas detector integrating sphere i.d.: 60 mm. maximum size of reflectance sample: w 70 × h 70 × d 20 mm (0° incident angle). w 70 × h 70 × d 12 mm (8° incident angle). system warranty and technical support. vendor should provide warranty of 3 year. compatible branded pc & hp b/w deskjet printer – 1 set; compatible 2 kva with 30 min backup – 1 no; compatible 2 ton ac – 1 no. on-site installation, commissioning and training (one vendor support) by factory-trained engineer is required.