supply of chemical glass ware and other items for nabl lab water testing work laboratory p h e sub division manasa-1 alkalinity standard , sodium carbonate, 0.1 n, traceable to srm from nist , make- loba, merck, sigma aldrich, bnd, or any iso-17034 certified make . with 2 year expiry date. from date of supply. 2 calcium standard-1000 mg / lit traceable to srm from nist make :- merck, sigma aldrich, bnd or any iso-17034 certified make.with 2 year expiry date. from date of supply. 3 calcium carbonate primary standard for the standardization of titrimetric analysis. traceable to srm from nist make :- merck, sigma aldrich, bnd, or any iso-17034 certified mak.with 2 year expiry date. from date of supply. 4 sodim chloride primary standard for the standardization of titrimetric analysis. certified value 99.99±0.20 with traceable to srm from nist make :- merck, sigma aldrich, bnd, or any iso-17034 certified mak.with 2 year expiry date. from date of supply. 5 chloride standard 500 mg / lit traceable to srm from nist make :- merck, sigma aldrich, bnd or any iso-17034 certified make. with 2 year expiry date. from date of supply. 6 ph 4.0 solution traceable to srm from nist make :- merck, sigma aldrich, bnd, or any iso-17034 certified make.with 2 year expiry date. from date of supply. 7 ph 7.0 solution traceable to srm from nist make :- merck, sigma aldrich, bnd, or any iso-17034 certified make.with 2 year expiry date. from date of supply. 8 ph 9.0 solution traceable to srm from nist make :- merck, sigma aldrich, bnd, or any iso-17034 certified make.with 2 year expiry date. from date of supply. 9 a optimum results reference electrode filling solution make- thermo scientific orion 900061 10 tisab iii concentrate with cdta total ionic strenght adjestment buffer. thermo scientific orion 11 m7hrfc agar, make- himedia, microxpress 12 glassware nessler cylinder cap.100ml class a with nabl certificate. make- borosil, omsons, j-sil 13 conical flask, wide mouth flat round bottom class a make- borosil, omsons, j-sil 14 pipettes transfer, volumetric ( one mark ) , accuracy as per class a, with certificate, nabl certified cap, 5ml type class-a 15 pipettes transfer, volumetric, accuracy as per class a, with certificate, nabl certified cap, 10ml type class-a 16 measuring cylinder 50ml graduated, single metric scale, with pour out, with hexagonal base, class a, nabl certified. make- borosil, omsons, j-sil 17 other items whatman filter no. 542 pore size 2-2.5 μm 125mm 18 filter membrane pore size 0.45μm, size-47mm ( pack of 100 circles ) 19 weight box e -2 , 23 weights including fractional weights 200 gm maximum with nabl calibration certificate make:- weigh india, wensar