Microbiological analysis of public drinking water is a critical task. The health and even the lives of millions of people depend on the purity of the water. Consequently labs and analysts that work at these facilities have stringent EPA certification and approval requirements as spelt out in this manual. One of the critical pieces of equipment in an analytical lab is the analytical balance. The manual clearly details the care, use, and maintenance of the balance: annual service contracts are compulsory; monthly calibration checks with certified calibration weights are mandatory. Also, the certified weights should comply to appropriate ASTM or NIST standards with supporting documentation.
For further information visit www.epa.ohio.gov.