supply of laboratory chemicals and instruments at idgah filter plant of nagar nigam bhopal under water works dept. , digital burette (titrette bottle) make:-brand,merck,hirschman specification 1. bottle top burette can titrate quickly and reliably with highest precision even in close quarters, with compact design. 2. class a, for sensible dropwise titration 3. no switching between fill and titrate 4. ultra high replaceable piston/cylinder assembly and optional pc interface 5. integrated digital display 6. each bottle-top burette has dem marking and is supplied with performance certificate, telescoping filling tube (170- 330mm), recirculation tube, 2 batteries (aaa/um4/lr03), 3pp bottle adapters (gl45/32, gl45/s40, gl32/ns29/32), 2 amber coloured light shield inspection window , conductivity/tds/salinity meter meter make-systronics/merck/eutech specification 1.measuring range for conductivity 0-200 us/cm;0-2000 us/cml-20ms/cm;0-500ms/cm 2. measuring range for tds-0- 200mg/1;0-2000mg/1;0-20g/1;0-500g/l. 3. measuring range for salinity-0-70 (after iot) 4. measuring range for temperature -10-100°c 5.resilution:0.1us, 1us,0.01ms,0.1ms, 0.1°c 6.accuracy; 1 digit, +-0.5% of the measuring range t(°c)+-0.1 (5- 50°c) 7.temprature consumption; automatic with ntc 30k ohm or fixed temperature 8. connectors;8-pol sensor socket, 4-pol usb interface socket. 9.calibration; direct input, temperature offset, single-point, automatic. 12. data storage; 4000 entries with date. time, value 1+2 and temperature , ph meter make systronics/mereck/supelco/riviera specifications 1. range 0-14 ph 2. calibration 5 point/3point 3. slop- 85% to 115% 4. including electrode and temperature probe , e.d.t.a. solution n/50 (0.02n) 500 ml pk -500 ml, make-merck/himedia , ammonia buffer solution 500 ml pk-500mi, make- merck/himedia , sulfuric acid 0.02n solution, 500 ml pk-500 ml, make- merck/himedia , murexide (ammonium purpurate), 5 gm pk -5 gm, make- merck/himedia , o-tolidine lr, 500 ml pk-500 ml, make - merck/himedia , methyl orange (c.i. 13025) indicator pk-25gm, make- merck/himedia , potassium chromate emplura, 500 gm pk -500 gm, make- merck/himedia