bids are invited for standard 1 for the 5500sc silica analyzer, 0.5 mg/l sio2, 2l reagent 1 for the 5500sc silica analyzer,2l reagent 2 for the 5500sc silica analyzer, 2l reagent 3 package for the 5500sc silica analyzer, contains 2l bottle of di water and powder to be mixed together. standard 1 hr for the 5500sc phosphate high range analyzer, 30 ppm po4, 2l reagent 1 for the 5500sc phosphate high range analyzer,2l reagent 2 for the 5500sc phosphate high range analyzer, 2l reagent 3 for the 5500sc phosphate high range analyzer,2l amino acid f reagent powder pillows (600 mw) citric acid powder pillows (600 mw) molybdovanadate reagent (600 mw) tptz iron reagent powder pillows (600 mw) ferric ion solution (600 mw) mercuric thiocyanate solution (600 mw) copper reagent set total quantity : 416