supply of lab chemicals supply of lab chemical for district and sub division laboratory , standard colour reagent 500 / 50 hazen reference - 475ml , turbidity standard 400 ntu - 500ml , conductivity standard 1000 umho / 1416 umho - 475ml , ammonium buffer solution std . make - 500ml , calcium standard reference standard - 500ml , mix indicator for alkalinity std . make or lab prepaired - 100ml , alkalinity standard reference standard - 475ml , chloride standard 500mg reference standard - 500ml , sulphate standard 100mg / l reference standard - 475ml , conditioning reagent for sulphate , std . make - 500ml , fluoride standard 100 ppm reference standard - 475ml , mixed alzarine zirconyl acid solution - 500ml , phenol di sulphonic acid ( pda ) clear bdh england - 500ml , nitrate standard as no3 100mg reference standard - 475ml , silver sulphate solution 0 . 443% - 500ml , iron standard 100mg reference standard - 475ml , special reagent fot manganese std . make - 500ml , manganese standard solution 100mg reference -500ml , m7hr fc agar std . make ( expiry 2years ) - 500gm , membrane 47 mm 0 . 45 micron , grided individualy strized std . make certified - 1 no , petri plates 55 mm std . make tpx - 1 no , zirconium oxichloride ar / gr - 100gm