tender for mes college nedumkandam procurement of laboratory equipments to the chemsitry lab using pd account - laying and jointing pvc pipe. heading , table top abbe refractometer -2 no – rs. 35000 / - per unit measurement ranges refractive index - 1.300 - 1.700 nd sugar content 0- 95% resolution refractive index- 0.0002 nd sugar content - 0.25 % accuracy refractive index - ± 0.0002 nd sugar content - ± 0.25 % light source - led ( approximating to wavelength of d-line ) , magnetic stirrer with hot plate-1no – rs. 30000 / - per unit even heat distribution on surface of top high magnetic strength thermal insulation for cool body operation speed range : ~2000 rpm temperature range : ambient to 550°c adjustable safety cut off , water double distillation unit – 1 no. – rs. 105000 / - per unit capacity: 4ltr / hr electrical power: 220 / 240 v, 50 / 60hz, single phase supply. rust free stand automatic operation based on water level distillate temperature - 25 to 45°c replaceable silica heaterin- built safety cut off pressure temperature switch ( pts ) , benchtop ph meter- 2 no- rs. 40000 / - per unit phrange : -2.000~20.000ph phaccuracy: ±0.002ph phresolution: 0.001, 0.01, 0.1ph ( selectable ) mvrange : ±1999mv mvaccuracy : ±0.2mv mvresolution: 0.1, 1mv ( selectable ) calibration: upto5points temp.range: 0~105°c, 32~221°f temp.accuracy: ±0.5°c, ±0.9°f temperaturecompensation: 0~100°c, 32~212°f, automaticormanual powersupply:usingac220v / 50hz , digitalphotocolorimeter-2 no- rs. 13000 / - per unit 1mlsamplevolume rangefrom 400to700nm highlystable&accurate high standard glass filters- 400 450 490 520540 570 620 680 nm , flame photometer – 1 no.- rs. 125000 / - per unit determination up-to five elements with single aspiration calibration standard up-to five point. auto ignition and auto gas cut-off gas leak sensor online reading facility sample volume: approx. 3ml aspiration time: five element analysis within 20 second on single aspiration elements to be detected: k, na, li, ca , table top digital potentiometer-2 no – rs. 15000 / - per unit potentiometer range 0 – ± 199.9 mv, 0 – ± 1999mv resolution : 1 mv repeatability : ± 1 mv accuracy : ± 1 mv, ± 1 digit input impedancy : >1012 ohms operating temperature : 10 to 50oc digital display with auto polarity indication electrodes: platinum electrode, reference electrode, glass electrode and silver electrode , polarimeter-1 no – rs. 50000 / - per unit measuring range: ( -180 ) °c to 180 °c scale value: 1° magnifier: 3x wavelength:589 nm light source: sodium lamp ( built-in ) test tube length: 50 / 100 / 200 mm , uv-vis spectrometer- 1 no.–rs. 360000 / - per unit measuring range: 300-800 nm no. of beams: double beam spectrophometer sampling: solid and liquid absorbance accuracy: ±0.005 photometric repeatability: ±0.002 abs at 1 abs wavelength resolution : 0.1nm spectral bandwidth ( sbw ) : 1 nm photometric range: -3~3 abs baseline stability: 0.002 abs / hour baseline flatness: + / -0.002 abs ( 300 - 800 nm ) stray light: =0.05% t at 220nm and 340 nm