Taking samples that are representative of the entire batch of product is the key to gaining useful results from on-site tests and laboratory analysis.

Please note that for all product tests, a sample of at least 10 litres which reflects the characteristics of the entire batch is required.

A practical guide for taking samples from a batch of product is given in the information sheet On-site Field Testing and Monitoring for Quality. This resource can be downloaded for free: Information Sheet No. 3-3

This information sheet is from the package Producing Quality Compost that provides guidance to manufacturers to produce quality composts and value added products.