PAK™27 Algaecide was granted full EPA Registration on May 21, 2004. EPA No. 68660-9

PAK™27 is NSF certified for Drinking Water Reservoirs.

Use of PAK™27 for aquaculture was granted by the EPA on January 13, 2005.
 
The EPA has granted expanded usage and increased dosage rates for PAK™27.

The expanded usage now includes moving water (irrigation, drainage and conveyance ditches, canals, laterals), shallow basins (estuaries, bayous, lagoons, water gardens, and water features), impounded water, and waste water.

The increased application rate is expanded from a maximum of 16.9#/acft to 100#/acft.