Heterotrophic Plate Count Agar is a non-selective, nutrient-rich growth medium. The heterotrophic plate count (HPC), also known as the standard plate count, is a procedure for estimating the number of live heterotrophic bacteria in water. This test can provide useful information about water quality and also provide supporting data on the significance of coliform test results. (High concentrations of the general bacterial population may hinder the recovery of coliforms).
Heterotrophic plate counts are also useful for judging the efficiency of various treatment processes for swimming pools, and for checking the quality of finished water in a distribution system. Heterotrophic plate counts are also used in the food, dairy, pharmaceutical, and cosmetic industries for quality control and microbial contamination monitoring. This product is suitable for the pour plate method, which is particularly useful for facultative, microaerophilic, and anaerobic microorganisms, because it allows colonies to grow both within and on the agar surface. Yeasts and molds may also be recovered. Citations: SM 18th 9215 A, D. Hach Method: 8074.