Compost laboratories may also do the following tests:

Nutrient Analysis: Measures the nutrient content (NPK values) to ensure the compost meets specific agricultural or horticultural requirements Testing
Pathogen and Weed Seed Testing: Ensures the composting process has effectively eliminated harmful pathogens and viable weed seeds Testing
Heavy Metal Testing: Assesses levels of heavy metals to prevent soil contamination and ensure safe use in agriculture Testing
Maturity and Stability Testing: Evaluates compost maturity to determine its readiness for use Testing
avoiding phytotoxicity issues Testing
Moisture Content Analysis: Determines the moisture level Testing
critical for storage and application effectiveness Testing
pH Testing: Measures the acidity or alkalinity of compost Testing