? 2011 Huzhou Rongkai Foliage Extract Co.,Ltd
浙ICP備12013976號 E-mail 
? 2011 Huzhou Rongkai Foliage Extract Co.,Ltd
浙ICP備12013976號 E-mail
Product name：L-Theanine
Appearance：Brown powder
Test item | Quality standard |
Water content | ≤7.0% |
Ash | ≤7.0% |
Theanine | ≥20%、30%、40% |
PH(10% solution） | 4-7 |
Particle size | Not less than 100% pass 40 mesh |
As | ≤1.5ppm |
Pb | ≤1.0ppm |
Total bacteria | ≤1000cfu/g |
Yeast&Mold | ≤50cfu/g |
E.coli | ≤400MPN/100g |
Salmonelia | Negative |