purchase of laboratory equipments for department of basic science and humanities , uv-visible spectrophotometer: (uv-vis spectrophotometer; display: 7-inch color touchscreen, tiltable, high definition, 800 × 1280 pixels; photometric accuracy instrument: ±0.002a at 0.5a; ±0.004a at 1.0a; ±0.008a at 2.0a; wavelength accuracy: ±0.5 nm; wavelength range: 190 nm – 1100 nm; baseline flatness: ±0.002a; compartments: 8-position cell changer; dimensions (l x w x h): 35.5 x 38.5 x 19.5 cm; drift: (at 500 nm after 1 hour warm up) <0.0005a/hr; electrical requirements: external ac to dc converter. voltage and frequency (hz) selected automatically, 100–240 volts, 50–60 hz.; keypad: manual and touch screen; lamp: xenon flash lamp (5 years); noise: rms at 500 nm 60 consecutive measurements; optical design: double beam; photometric display: -3a to +5a; photometric range: –2a to +3.5a; photometric repeatability: ±0.001a at 1a measured at 1.0a at 546 nm; spectral bandwidth: 2 nm; stray light: < 1.0%t 198 nm (kcl) , <0.05%t at 220 nm (nai), <0.03%t at 340 nm (nano2) wavelength data interval: 0.1 nm, 0.2 nm, 0.5 nm, 1 nm, 2 nm, 5 nm; wavelength repeatability: < ±0.2 nm; wavelength scan speed: slow, medium and fast - up to 1600 nm/min; cuvette: quartz -2 set; glass-2 set two years comprehensive warranty(1) , refrigerated centrifuge with stabilizer: max. speed: 20,000 rpm; noise level: <59 dba; rotor: adjustable with different rotor volumes; 1.5 ml×24; 50 ml×6; 100ml×4; rpm/rcf convert; automatic cut off two years comprehensive warranty (1) , plant growth chamber: 250 litres; temperature -4.0-+70°c; humidity range 50%-97%, digital timer, temperature and humidity controller, optional dryer, illumination throughout with white, red and blue light, uv lamps for sterilization, wheel based for easy movement. two years comprehensive warranty (1) , deep fridge: (temperature measurement in celsius; microprocessor controlled with alarm and led display;lockable with removable key;cfc free;temperature –40°c chest type. capacity 100 - 130 litre;220-230 v 50 hz with build in voltage stabilizer;minimum temperature -40°c ;high/low temperature(-20);four casters and two adjustable feet;digital temperature displays as standard feature two years comprehensive warranty) (1) , double distillation unit: (fully automatic cabinet still unit; distilled water output -4litres/hr; conductivity-2.2 s/cm; biological activity-pyrogen free; microprocessor controlled; lcd display; audible alarm for unsupervised operation; replaceable silica sheathed (quartz) heater: fitted on horizontal jacket; auto cut off; borosilicate glass two years comprehensive warranty) (1) , refrigerator with stabilizer: (double door; convertible plus with smart inverter compressor, door cooling+, smart diagnosis, auto smart connect two years comprehensive warranty) (1)