bids are invited for lab chemicals diaminedihydrochloride , 5 4dimethylaminobenzylidene rhodanine , zirconyl chloride octahydrate , sodium carbonate solution for 1000 ml , standard solution ammonia , colour standard pt chloroplatinate , conductivity solution kcl 1 41mscm , standard solution chloride , standard solution phosphate , standard solution fluoride , standard solution nitrate , standard solution nitrite , standard solution sulphate , standard solution boron , standard solution calcium , standard solution magnesium , standard solution sodium , standard solution potassium , standard solution arsenic , standard solution iron , standard solution copper , standard solution cadmium , standard solution chromium , standard solution nickel , standard solution zinc , standard solution lead , standard solution manganese , standard solution cobalt , standard solution palladium , standard solution phenol , a bhc , b hch , g bhc lindane , chlorpyriphos , dimethoate , ethion , malathion , 2 4 ddt , 4 4 ddt , epa 8270 organo- phosphorus pesticide mix 2 , epa 625 clp pesticide mix , cuvette for spectrophotometer rectangular cell 10mm size total quantity : 276