How is the compost tested and what is in the lab analysis?

The final compost is tested according TMECC (Test Methods for the Examination of Composting and Compost) by a certified laboratory according to US Composting Council’s STA program.  Compost quality is evaluated through an independent laboratory analysis for parameters such as carbon-to-nitrogen (C:N) ratio, organic matter content, salinity total nitrogen, total phosphorus, stability, phytotoxicity, pH, maturity, boron, chloride, sodium, particle sizes, heavy metal concentration, and pathogen concentrations  and other parameters before it is provided to customers. For additional information about testing parameters see link.    

Compost that can be sold or otherwise provided to customers must meet California standard for every pile and to attain a temperature of 131 degree Fahrenheit (55 degree Celsius) or higher, and maintain that temperature for at least 3 days.