HJ 493-2009
Water quality.Technical regulation of the preservation and handling of samples (English Version)

Standard No.

HJ 493-2009

Language

Chinese, Available in English version

Release Date

2009

Published By

Professional Standard - Environmental Protection

Latest

HJ 493-2009

Replace

GB/T 12999-1991

Scope

This standard specifies the preservation measures for water samples in all aspects from the preparation of containers to the addition of protective agents, as well as the general technology for sample label design, transportation, reception and ensuring the quality of sample preservation. This standard applies to natural water, domestic sewage and industrial wastewater. When the collected water samples (instantaneous samples or mixed samples) cannot be analyzed immediately on site and must be sent to the laboratory for testing, the sample preservation techniques and management procedures provided in this standard are applicable.

HJ 493-2009 history

• 2009 HJ 493-2009 Water quality.Technical regulation of the preservation and handling of samples

HJ 493-2009 Water quality.Technical regulation of the preservation and handling of samples has been changed from GB/T 12999-1991 Water quality sampling--Technical regulation of the preservation and handling of samples.