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Tag Archives: guardia
Iodine tablets– One tablet added to a quart releases 8 ppm (parts per million) of iodine. Two tablets are used for turbid water. Wait 15 minutes after adding tablets, 30 minutes if the water is cold. The shelf life of the tablets is 3-5 years. Deterioration is evidenced by a change in the tablet color; metallic gray is acceptable, light yellow double the dose, and reddish brown discard. The formation of a precipitate is acceptable. If there is starch in the water from potatoes, corn or rice the water will turn a blue color. The blue colored water is harmless and is acceptable to drink. …Read More...