GB/T 35832-2025 in English
VALIDTesting method of the abrasivity value of toothpastes
- Issued on:2025-06-30
- Implemented on:2026-01-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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| Standard No: | GB/T 35832-2025 |
| Document status: | VALID |
| Title in English: | Testing method of the abrasivity value of toothpastes |
| Title in Chinese: | 牙膏磨擦值检测方法 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Via email within 1~3 business days |
| Issued on: | 2025-06-30 |
| Implemented on: | 2026-01-01 |
| Superseding: |
GB/T 35832-2018 Testing method of the abrasivity value of toothpastes
|
| ICS Classification: | 71.100.70-Cosmetics. Toiletries |
| Chinese Classification: | Y43-Tooth paste, soap and detergent |
| Professional Classification: | GB-National Standard |
| Related Keywords: | abrasivity value
speed fixed value value ±22g ra value abrasive instrument requirements fixed model requirements performance |
| Related Topics: | tm value method
Bromine value detection method detection value detection method value Toothpaste detection is toothpaste flammable GB/T 35832-2018 Ester value testing |
《GB/T 35832-2025牙膏磨擦值检测方法》由TC492（全国口腔护理用品标准化技术委员会）归口，TC492SC1（全国口腔护理用品标准化技术委员会牙膏分会）执行，主管部门为中国轻工业联合会。
Introduction
Core changes in the standard revision
| Technical elements | 2018 edition | 2025 edition |
|---|---|---|
| Scope of application | Unlimited abrasive type | Clearly limit Hydrated silica abrasive |
| Instrument requirements | Fixed model requirements | Performance parameter-oriented requirements |
| Brushing speed | Fixed value 150 times/min | Range 100-170 times/min |
Analysis of Key Technical Points
1. Standardization Requirements for PMMA Grinding Blocks
The new standard clarifies that polymethyl methacrylate grinding blocks must meet the following requirements:
- Dimensional tolerance ±0.5mm (73×22×10mm)
- Initial roughness Ra≤0.02μm
- Vickers hardness 18-25kg/mm² (500g/15s)
2. Key Parameters of Brush Grinding Machines
Verification data from a certain brand's testing laboratory shows that:
| Dynamic load fluctuation | ≤±30g (standard requirement) |
| Actual measured value | ±22g (L8 equipment) |
Implementation suggestions
- Equipment upgrade: It is recommended to purchase a brush grinding instrument with magnetic stirring function to ensure the uniformity of toothpaste slurry
- Process control: Stirring should be paused every 2000 brushings, and the cumulative error should be controlled within ±2%
- Data verification: The RSD of the Ra value of 8 sets of PMMA grinding blocks should be ≤15%
Sample only — not a preview of GB/T 35832-2025
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