Every year samples of finished compost are taken to the UMass Soil Testing Lab for comprehensive analysis. All Bear Path Compost customers are provided with this analysis upon delivery. Each analysis includes the following information: % total nitrogen (N), nutrient levels of phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg), % organic matter, micronutrients and extractable heavy metals. This information is intended to supplement professional soil tests that specify the fertility needs of plants and crops. The link above takes you to a recent compost sample analysis.