supply of allied material and chemicals , turbidity standard 400 ntu 2x475ml , conductivity standard 1000umho / 1416 umho 2x475ml , membrane sterilized disposable pore size 0 . 45 um , dia 47mm grided . 300nos . , calcium standard 400mg / l as ca & 1000mg / -las caco3 with coa & sds 2x475ml , alkalinity standard ( sodium corbonate ) 1000mg / l as caco3 2x475ml , chloride standard 500mg / l with coa & sds 2x475ml , fluoride standard 100ppm with coa & sds 2x475ml , nitrate standard as no3 100mg / l pda added coa & sds 2x475ml , edta n / 50 9x5 ltr . , universal indicator for ph 10x500 ml , erichrome black t 10x100 ml , ammonium buffer solution 12x500ml , chlorotex regent 10x100ml , mixed indicator for alkalinity 20x100ml , potassium chromate indicator solution with coa & sds 6x100ml , silver nitrate solution gr / ar 0 . 0141 n with coa & sds 30x500ml , zirconyl-alizarin red mixed solution for fluoride estimation 30x500ml , phenol di sulphonic acid ( pda ) clear , bdh 10x500ml , silver sulphate solution 0 . 443% 6x500ml , sulphate test reagent set for 200 determination 10 set , iron test reagent set . for 200 determination 10 set , manganese test reagent set for 200 determination 10 set , tisab iii for fluoride 2x475ml