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| Item | Specification | Test Result | Conclusion | Test Method | |
Physical and chemical test |
Moisture % | ≤6 | 3.3 | Complies | GB5009.3 |
| Ash % | ≤30 | 13.9 | Complies | GB/T18798.2 | |
| Tea polyphenol % | ≥10 | 24.5 | Complies | GB/T4067 | |
| Pb mg/kg | ≤4.5 | / | / | GB5009.12 | |
| Solubility | soluble in 25±1ºC water | soluble in 25 ±1ºC water | Complies | Q/ZMH0001S | |
| Bulk density g/100ml | ≥20 | 38.2 | Complies | GB/T18798.5 | |
Microbiol ogical test |
Aerobic plate count CFU/g | ≤5000 | <10 | Complies | GB4789.2 |
| Coli group MPN/100g | ≤30 | <30 | Complies | GB/T 4789.3 | |
| Pathogenic bacteria | Negative | / | / | GB4789.4 GB4789.10 |
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| Mould and Yeast CFU/g | ≤100 | <10 | Complies |
GB4789.15 |
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Sensory feature test |
Appearance | Yellow red to reddish brown | Complies | Complies | Q/ZMH0001S |
| Liquor | Red ; Bright | Complies | Complies | ||
| Odor | Special scent of black tea | Complies | Complies | ||
| Taste | Good | Complies | Complies |