Agricultural geological water (37 parameters) detection

1. Scope of Application: This standard specifies the dilution and inoculation methods for determining the five day biochemical oxygen demand (BOD;) in water. This standard is applicable to the determination of five day biochemical oxygen demand (BOD;) in surface water, industrial wastewater, and domestic sewage. The detection limit of the method is 0.5mg/L, the lower limit of the method is 2mg/L, the upper limit of the non dilution method and non dilution inoculation method is 6mg/L, and the upper limit of the dilution and dilution inoculation method is 6000mg/L. 2 Normative References This standard refers to the clauses in the following documents. For undated references, their valid versions are applicable to this standard. GB/T6682 Specification and Test Methods for Analytical Laboratory Water GB/T 7489 Water Quality - Determination of Dissolved Oxygen, Iodometric Method GB/T 11913 Water Quality - Determination of Dissolved Oxygen - Electrochemical Probe Method HT 91 Technical Specification for Surface Water and Wastewater Monitoring

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