tender for purchase of lab items for basic engineering , digital balance load capacity: minimum 500 g • readability: 0.01 g • linearity: 0.02g • display: lcd/led • tare function: required • top pan type • power supply: 220-240 v ac, 50 hz , digital ph meter 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 , heating mandle capacity: 500ml • temperature range: ambient to 350°c • energy regulator/control knob: required , water distillation units output capacity: 4 litres per hour (lph) • ph value: 5.5 to 7.0 • conductivity (raw water distillation):3.0 - 4.0 μs/cm or less • glassware material: borosilicate 3.3 glass (pyrex/duran equivalent) • heating elements: silica-enclosed quartz heaters or chromium-plated element variants • power supply: 220-240 v ac, 50 hz / 60 hz, single phase • automatic water level cut-off