supply of lab materials-1 trubidity standard 400ntu 2 conductivity standard 1000umho 1416umho refrence standard 3 calcium std. reference std. 4 mixed indicator for alikalinity std. make or lab prepared 5 alkalinity std. reference standard 6 potessium chromate indicator 7 chloride standard 500mg reference standard merck 8 conditionar reagent for sulphate std. merck 9 fluoride std. 100 ppm for orion 10 tisab iii orion 11 electrode feeling solution for orion 12 iron free distilled water ( reagent grade 1 water ) 13 iron standard 100mg reference standard 14 special reagent for manganese std make approx for 600 sample 15 ammonium per sulphate gr ( approx for 600 sample ) 16 mangnese standard solution 100mg reference std. 17 m7hr fc agar.std.make ( expire 2 year ) 18 isa 475ml for orion 19 nitrate std. 100ppm for orion 20 electrode feeling solution fororion