T/GBC 64-2025 Active Group standards

T/GBC 64-2025 Determination of metal elements in rosin—Part 4:Determination of heavy metals (as lead)—Visual turbidimetric method

Publish Date: 2025-08-29 Implement Date: 2025-09-29 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: T/GBC 64-2025

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Broadcasting and television transmission and reception equipment

ICS Name: Chemical analysis

Publish Date: 2025-08-29

Implement Date: 2025-09-29

Scope

This document specifies the principles, reagents and materials, instruments and equipment, analytical procedures, result evaluation, precision, and quality control for the visual turbidity method for determining heavy metals (calculated as lead) in rosin. This document is applicable to the determination of heavy metals (calculated as lead) in rosin. When the sample weighs 5 g and the volume of the standard solution is 50 mL, the method has a detection limit of 2.5 mg/kg. It specifies the principles, reagents and materials, instruments and equipment, analytical procedures, result evaluation, precision, and quality control for the visual turbidity method for determining heavy metals (calculated as lead) in rosin. It is applicable to the determination of heavy metals (calculated as lead) in rosin. When the sample weighs 5 g and the volume of the standard solution is 50 mL, the method has a detection limit of 2.5 mg/kg.