Standard No.:	HJ 506-2009
English Name:	Water Quality – Determination of Dissolved Oxygen – Electrochemical Probe Method
Chinese Name:	水质 溶解氧的测定 电化学探头法
Professional Classification:	HJ    Professional Standard - Environment
Issued by:	the Ministry of Environmental Protection
Issued on:	2009-10-20
Implemented on:	2009-12-1
Status:	valid
Superseding:	GB 11913-1989 Water quality-Determination of dissolved oxygen-Electrochemical probe method
Language:	English
File Format:	PDF
Word Count:	5000 words
Price(USD):	120.0
Delivery:	via email in 1 business day

This Standard specifies an electrochemical method for the determination of dissolved oxygen in water. This Standard is applicable to the determination of dissolved oxygen in surface water, groundwater, domestic sewage, industrial wastewater and saline water. The method of this Standard measures oxygen in water corresponding to 0% to 100% saturation. However, it also permits measurement of values higher than 100% (20mg/L), i.e. supersaturation.

Foreword i 1 Scope of Application 1 2 Normative References 1 3 Term and Definition 1 4 Principle 1 5 Reagents and Materials 2 6 Apparatus 2 7 Analysis Procedure 2 8 Calculation of Results 3 9 Test Report 5 10 Precautions 5 Annex A (Normative) Solubility of Oxygen in Water in Relation to Temperature, Pressure and Salinity 7 Annex B (Informative) Comparison of Chapter and Article Numbering between This Standard and ISO 5814: 1993 10