1. Waste water 20 ml water sample is poured into bottles reflux
2. Add a mercury sulfate 0.4 g Shake well
3. Mix a solution of potassium dichromate 10 negative. cm. .
4. Put the glass (glass beads) 5-6 tablets to prevent violent boiling
sulfuric 5. Fill Rick Krause, with silver sulphate concentrations of contaminants down to 30 cc.
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