Standard No.:	GB/T 1601-1993
English Name:	Determination method of pH value for pesficides
Chinese Name:	农药pH值的测定方法
Chinese Classification:	G23    Basic standards and general methods for pesticides
Professional Classification:	GB    National Standard
Issued by:	CSBTS
Issued on:	1993-12-30
Implemented on:	1994-10-1
Status:	superseded
Superseded by:	GB/T 1601-2023 Determination method of pH value for pesticides
Superseded on:	2024-4-1
Abolished on:	2024-04-01
Superseding:	GB 1601-1979(1983)
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	90.00
Delivery:	via email in 1 business day

1 Application scope



This method is applicable to the determination of the pH value of aqueous dispersions (or aqueous solutions) of pesticides’ technical materials, powders, wettable powders, emulsifiable concentrates, etc.



2 Definitions



The pH value of an aqueous liquid is defined as the common logarithm of the reciprocal of the hydrogen ion concentration expressed in mol/L.



3 Outline of method



The pH value of an aqueous liquid is determined by means of a pH meter.



4 Reagents and solutions



4.1 Water: freshly boiled and cooled (to ambient temperature) distilled water of pH 5.5 to 7.0.

1 Application scope
2 Definitions
3 Outline of method
4 Reagents and solutions
5 Apparatuses
6 Determination procedures
Additional explanation: