TAIS Compost Lab Test Results
Trito Agro-Industrial Services (TAIS) creates quality compost for agricultural and landscaping use from food waste they collect from residential and commercial sources in Puerto Rico. They use a bokashi method (which they cleverly call “borikashi”) to ferment the food waste and combine it with wood chips and other high-carbon components for hot composting in windrows.
We received several meters of nearly finished, un-sifted compost from TAIS. We let the compost age for approximately thirty additional days on-farm before sifting it through a 1/2-inch screen and sending it for testing. The lab testing was performed by the University of Pennsylvania Extension adhering to US Composting Council (USCC) Seal of Testing Assurance (STA), which specific standards for pathogen reduction and metal limits as defined by EPA 503.
Test results are excellent, showing a clean, nutritional compost suitable for containers, raised beds, and in-field use. EPA 503 pollutants and fecal coliform all reported significantly below allowed levels.
Complete results are available in PDF form.
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