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State Government

CTN :40747696 Due date: 08 Jul, 202508 Jul, 2025 5.00 Lacs
Tender For name of work : supply of equipment lumiries - call bell (anchor/havells/cona/kolors), a) buzzer, b) ding dong, c) tringtring, d) class room gong bell, cordless electronic call bell, thermo switch for geyser big size, thermo switch for geyser small size, fan condenser 2.5 m.f.d. worldtek / crompton, fan condenser 4 m.f.d., halogen tube 500watt (crompton/usha/ orient/anchor), halogen tube 1000 watt (crompton/usha/ orient/anchor), halogen tube fitting 500 watt (crompton/usha/ orient/anchor), halogen tube fitting 1000 watt (philips/crompton/bajaj), halogen holder, wall mounted fan (crompton/usha/ orient/anchor) supply of a.c. 230 v, 50 hz. complete with necessary brackets for fixing of fan, wire & blades & base etc. complete., a) 300 mm, b) 400 mm, c) 450 mm, ceiling fan energy efficiency three star (crompton/usha/ orient/anchor), a) 900 mm, b) 1200 mm, c) 1400 mm, ceiling fan bldc five star rated) (crompton/usha/ orient/anchor), a) 1200 mm, b) 1400 mm, pedestal fan (usha/crompton hi speed/anchor/orient), bldc fans (super efficient usha/crompton 5 star, water geyser (remoson/bajaj/recolt) 5 star, a) 10 liter, b) 15 liter, c) 25 liter., d) 35 liter., e) instant geyser 3 kw, cfl bulk head fitting (crompton/anchor), a) 5 watt with led (bulb) with complete fitting, b) 11 watt with led (bulb) with complete fitting, power capacitor (l&t, siemens, crompton, natraj, epcos), exhaust fan (crompton/orient/usha/anchor), a) 225 mm., b) 300 mm. (1400 rpm), c) 380 mm. (crompton), d) 400 mm. (1400 rpm), e) 450 mm. (950 rpm), f) 600 mm. (700 rpm), exhaust fan 3phase model (crompton/orient/usha/anchor), a) 1400 rpm, b) 700 rpm, c) 550 rpm, d) 450 rpm, geyser coil (remson/recolt), a) 2 kw., b) 3 kw., concealed dome lighter 2 x 18 (philips/crompton/wipro), a) electronic energy meter (l&t / hpl) 1 phase (static), b) electronic energy meter (l&t/ hpl) 3 phase (static), led tube fitting 20 watt (philips/crompton/anchor), bulb 15 watt zero night lamp (philips/crompton/anchor), bulb 60 watt (philips/crompton/anchor), bulb 100 watt (philips/crompton), ceiling rose (anchor/crompton), a) air cooler fan motor (indo/usha/ crompton), air cooler fan blade 9", air cooler fan blade 12", air cooler fan blade 18", b) air cooler water pump (indo/usha/ crompton), air cooler side panel, air cooler wale, air cooler front jali (iron), air cooler wheel, air cooler cord wire, air cooler switch kit, air cooler nali set, led profile light with channels and strips, par led light (crompton, bajaj, philips), spot light led (crompton, bajaj, philips), spot light 1000 watt (crompton, bajaj, philips), tower fan (usha / crompton / orient / achor), fan raod, 2 fit fan road, 3 fit fan road, 5 fit fan rord, tools, tong tester, line tester, plier, multimeter, cell, pencil cell, duracell ulta aa alkaline battery

State Government

CTN :40841890 Due date: 18 Jul, 202518 Jul, 2025 NA
Tender For supply and installation of laboratory equipment experimental setup for fyimp ug practical classes at the department of physics, gauhati university - laboratory equipments/experiment set ups, experiment name: to verify the law of malus for plane polarised lighttechnical specifcations:i. light source: - led: 532 nm or 635 nm ( 2 nm stability), 1 5 mw adjustable output. - unpolarized (extinction ratio >500:1). - collimated beam (divergence 0.5 mrad); qty-1ii. polarizers- glan-thompson or polymer film. - extinction ratio 10 :1 @ operating wavelength.- mounted in 50 mm rotation holders.; qty-2iii. rotation stage- motorized analyzer rotation (0.05 resolution). - accuracy: 0.1 . - range: 0 360 (continuous).; qty-1iv. photodetector- silicon photodiode (400 1100 nm). - linearity: r 0.999 (0.1 w 5 mw).- digital readout: 0.1 w resolution.; qty-1v. optical bench-- anodized rail ( 60 cm) with kinematic mounts. - vibration-damping feet.; qty-1, experiment name: to determine thespecific rotation of sugar solution using polarimetertechnical requirementsa.core instrumenti. light source- - sodium d-line (589.3 nm) or tunable led ( 2 nm stability). - output stability: 0.2% drift/hour.ii. polarizer/analyzer- glan-thompson prisms or high-grade polymer film. - extinction ratio 10,000:1 at 589 nm.iii. rotation stage- motorized with 0.001 resolution.- accuracy: 0.005 .- range: -90 to +90 .iv. sample cell-- borosilicate glass tubes with precision ground ends. - path lengths: 0.5 dm, 1.0 dm, 2.0 dm ( 0.01 dm tolerance). - temperature-controlled jacket (5 50 c 0.1 c).v. detector- photomultiplier tube (pmt) or low-noise photodiode. - linearity: r 0.999 over 0.1 w 5 mw rangevi. enclosure- light-tight with vibration damping. - internal black anodized surfaces.b.measurement specificationsi. specific rotation: range: -180 to +180 resolution: 0.001 accuracy: 0.01 ii. concentration-range: 0.01 0.5 g/ml (sucrose in water) detection limit: 0.001 g/mliii. temperature control-stability: 0.1 c at 20 c (standard condition), experiment name: to determine the wavelength and velocity of ultrasonic waves in a liquid (kerosene oil, xylene, etc.) by studying the diffraction through ultrasonic gratinga.core componentsi. ultrasonic generator- - frequency range: 1 10 mhz ( 0.1% stability). - adjustable output: 0 50 w. - digital display (resolution: 0.01 mhz).ii. transducer- piezoelectric (pzt) crystal, resonant at 2 5 mhz. - liquid-coupled design for efficient energy transferiii. liquid cell- optical glass (low thermal expansion). - dimensions: 100 50 50 mm (l w h). - sealed with quartz windows.iv. light source- he-ne laser (632.8 nm, 2 mw) or sodium lamp (589.3 nm). - beam collimation: 0.5 mrad divergence.v. optical system- adjustable slit (10 500 m). - collimating lens (f = 150 mm, 50 mm). - precision rotation stage for detector (0.01 resolution).vi. detection system- photodiode/pmt detector with linear response (400 800 nm). - traveling microscope (0.01 mm resolution) or ccd camera ( 5 mp).b.measurement specificationsi.wavelength ( )range: 0.1 2 mm, resolution: 0.001 mm, accuracy: 1%ii. velocity (v)range: 800 2000 m/s (liquids) resolution: 1 m/s accuracy: 2%iii. diffraction angles- measurement range: 30 resolution: 0.01 , experiment name: to verify the stefans law of radiation and to determine stefan s constanta.core componentsi.black body radiator- cavity-type design (emissivity 0.99). - material: nickel-plated copper.- operating range: 50 c 600 c. - aperture diameter: 10 mm 0.1 mm.ii. heating system- pid-controlled furnace (0 600 c). - stability: 0.5 c at 300 c. - power: 500 w (ac 230v).iii. temperature sensor- type k thermocouple or pt100 rtd. - accuracy: 0.5 c at 500 c (nist-traceable).iv. radiation detector- thermopile sensor (spectral range: 0.3 20 m). - responsivity: 10 v/w.- active area: 10 10 mm .v optical path. - water-cooled collimating tube with baffles.- adjustable aperture to define solid angleb.measurement specificationsi. temperature range100 c 500 c (reso
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