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Emergency Drinking Water Germicidal Tablets are intended for emergency disinfection of drinking water. When used as directed, they make most water bacteriologically suitable for drinking.
o Unopened - 4 years from manufacture date.
o Opened - 1 year from date of opening, or if they start to dis-color.
o Calculating manufacture date
§ Lot #: the first number of 5 digit or the first two numbers of a 6 digit lot number is the month of tablet manufactured.
§ The next 2 numbers correspond to the year the tablets were manufactured. The last two digits are chronological company numbers. (ie: lot 69014 - was manufactured the 6th month of 1990)