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Reading Lot Numbers on Puritan Products brand Chemicals

All Puritan Products brand chemicals have lot numbers containing 11 digits.

  • The first four digits of the lot number are the product code
  • The next three digits of the lot number represent the Julian date
  • The next two digits represent the last two digits of the year
  • The last two digits represent the sequence of lot numbers assigned that day

Lot Number Example

28771271501
2877 127 15 01
Product Code Julian Date Year Lot Sequence

The example lot number above is for Sulfuric Acid, 95-97% ElectroPUR™ SEMI that was packaged on May 7, 2015 and it was the first product that was assigned a lot number that day.

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