GB/T 8325-2026 Pending National standards

GB/T 8325-2026 Plastics—Polymer dispersions and rubber latices—Determination of pH

GB/T 8325-2026 Plastics—Polymer dispersions and rubber latices—Determination of pH

Publish Date: 2026-03-31 Implement Date: 2026-10-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 8325-2026

Standard Type: National standards

Standard Status: Pending

is_force_gb: no

CCS Name: Basic standards and general methods for synthetic resins and plastics

ICS Name: Plastic Composite

Publish Date: 2026-03-31

Implement Date: 2026-10-01

Pages: 12 pages

Scope

This document describes a method for measuring the pH value of polymer dispersions and rubber latex (natural and synthetic) using a pH meter equipped with a glass and silver composite reference electrode.
This document is applicable to vulcanized rubber latex and compounds containing polymer dispersions or rubber latex, including adhesives.
Note 1: When the pH value is greater than 11, the accuracy of this method will decrease.
Note 2: pH meters equipped with other electrodes can also be used, as long as the results obtained are the same as those obtained with the aforementioned pH meters.

Development Information

Word Count: 15 Thousand words Pages: 12 pages

Replace the following standards

GB/T 8325-1987 Determination for pH of aqueous dispersions of polymers and copolymers

Referenced Standards

GB 3186-1982 Sampling paint products GB/T 3186-2006 Paints, varnishes and raw materials for paints and varnishes—Sampling GB/T 6682-1992 Water for analytical laboratory use—Specification and test methods GB/T 6682-2008 Water for analytical laboratory use—Specification and test methods GB/T 8290-1987 Natural rubber latex concentrate—Sampling GB/T 8290-2008 Natural rubber latex concentrate—Sampling GB/T 8290-2021 Rubber latex—Sampling GB/T 27501-2011 Preparation method of buffer solutions for the measurement of pH value

Adopt standards

ISO 976:2013

Related Standards

GB/T 12000-1989 Replaced

GB/T 12000-1989 Plastics—Test methods of exposure to damp heat, steady state

Publish Date: 1989-12-25

GB/T 15585-1995 Abolished

GB/T 15585-1995 Determination of shrinkage for injection moulding thermoplastics

Publish Date: 1995-06-12

GB/T 15596-1995 Replaced

GB/T 15596-1995 Plastics—Determination of changes in Color and variations in properties after exposure to daylight under glass, natural weathering or artificial light

Publish Date: 1995-06-12

GB/T 15598-1995 abolished_transferred

GB/T 15598-1995 Testing methods for shear strength of plastics by punch tool

Publish Date: 1995-06-12

GB/T 1843-1996 Replaced

GB/T 1843-1996 Plastics—Determination of izod impact strength

Publish Date: 1996-06-14

GB/T 2035-1996 Replaced

GB/T 2035-1996 Terms and definitions for plastics

Publish Date: 1996-06-14