tender for purchase of lab equipments- 1 purchase of lab equipments 2 digital tds meterspecifications: measuring range: 0–9990 ppm resolution: 1 ppm display: lcd • automatic temperature compensation (atc): required • waterproof: minimum ip67 protection power source: battery operated (button cell/aaa battery) 3 digital ph meter benchtop model specifications:• ph type microprocessor/microcontroller ph range: 0 –14 resolution: 0.01 ph accuracy: ±0.05 ph or better combined ph electrode with temperature sensor • two or three -point calibration facility temperature compensation type automatic display: lcd • power supply: 220 –240 v ac, 50 hz warranty minimum 1 year please enable macros to view boq information