supply of equipments and instrument for water testing laboratory nepanagar ( estimate-2 ) supply of equipments and instrument for water testing laboratory nepanagar ( estimate-2 ) , supply of equipments and instrument for water testing laboratory-2 , alkalinity standard , sodium carbonate, 0.1 n, traceable to srmfrom nist make loba merck, sigma enrich, thermo orion, nsi lab solution, or any iso-17034 certified make. , calcium standard 1000 mg / lit traceable to srm from nist make: merck, sigma enrich, thermo orion, nsi lab solution, or any iso- 17034 certified make , tds standard1000 mg / lit traceable to srm from nist make merck, sigma enrich, thermo orion, nsi lab solution.or any iso- 17034 certified make , chloride standard 500 mg / lit traceable to srm from nlst make :-merck, sigma enrich, thermo orion, nsi lab solution, or any iso- 17034 certified make , ph 4.0 solution traceable to srm from nist make :- merck, sigma enrich, thermo orion, nsi lab solution, or any 150-17034 certified make , ph 7.0 solution traceable to srm from nist make :- merck, sigma enrich, thermo orion, nsi lab solution.or any 150-17034 certified make , ph 9.2 / 10.0 solution traceable to srm from nist make :- merck, sigma enrich, thermo orion, nsi lab solution.or any iso- 17034 certified make , turbidity standard 1000 ntu traceable to srm from nist make: merck, sigma enrich, thermo orion, nsi lab solution, or any iso 17034 certified make , colour standard 500 hazen traceable to srm from nlst make :- merck, sigma enrich, thermo orion, nsi lab solution, or any 150-17034 certified make