CAUTIONWARNINGTM 5-6630-215-12Barium Chloride Reagent.Keep away from children.For test purposes only, poison.If swallowed,call a physician at once.Give patient a table-spoonful of Epsom Salts in a glass of water.Induce vomiting with plenty of warm salt water.(1 tablespoon of salt per glass). Repeat untilvomit is clear.Sulfate Indicator Powder.Caution,for testpurposes only.Not for internal use.Keep awayfrom children.Phosphates react similarly to sulfates in theProcedure A test which follows, therefore ifpresent, would cause an erroneous result.UseProcedure A if it is known that phosphates arenot present (rain water in a cistern complex,etc.).If phosphate presence is unknown or sus-pected, use Procedure B which nullifies thephosphate interference.As a check or if thereis a need for phosphate determination, run bothprocedures.Both results should be similar ifphosphates are not present.If Procedure A readshigher than B, phosphates are present in theamount of difference.NOTEHold dropper vertical in use and do not allowdropper to touch container when adding droplets.(2) 0-750 mg/l range. Procedure A - for waters that do notcontain phosphate.(a) Rinse the 25 ml graduated cylinder with the water beingtested and fill to the 10 ml mark.(b) Add one drop of phenolphthalein indicator solution. Ifthe sample turns red, add hydrochloric acid dropwise until the redcolor disappears.If the sample remains colorless when phenolph-thalein is added, do not add hydrochloric acid.2-78
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