Testing Requirements
3.1 Sensory Requirements
Glazed products should have uniform glaze colors, and the decorations should not peel off.
3.2 Physical and Chemical Indicators
|
Item |
Flat Products (mg/dm²) |
Storage Tanks (mg/L) |
Large Hollow Products (mg/L) |
Small Hollow Products (Excluding Cups) (mg/L) |
Cups (mg/L) |
Cooking Vessels (mg/L) |
Test Method |
| Lead ≤ | 0.8 | 0.5 | 1.0 | 2.0 | 0.5 | 3.0 | GB 31604.34 |
| Cadmium ≤ | 0.07 | 0.25 | 0.25 | 0.30 | 0.25 | 0.30 | GB 31604.24 |
3.3 Self - inspection Quality Control Testing
|
Item |
Testing Standard |
| Water Absorption | GB/T 3532 for Daily Ceramics |
| Microwave Oven Adaptability | |
| Refrigerator - to - Microwave Oven Adaptability | |
| Refrigerator - to - Oven Adaptability | |
| Product Specification Deviation | |
| Appearance Quality |