Testing Item | 
Standard | 
Result |

Appearance | 
White crystals or crystalline powder | 
conforms |

Assay/% | 
≥98.50 | 
99.60 |

Specific Rotation | 
+26.6°~+28.8° | 
+27.4° |

Light Transmittance | 
≥94 | 
97.1 |

Residue on Ignition/% | 
≤0.10 | 
0.08 |

Chloride (Cl)/% | 
≤0.05 | 
0.018 |

Iron (Fe)/% | 
≤0.0030 | 
0.0008 |

Sulfate ( SO4)/% | 
≤0.03 | 
0.015 |

Heavy Metal(Pb)/% | 
≤0.0015 | 
0.0008 |

Loose Bulk Density(g/ml) | 
/ | 
0.40 |

Bulk Density(g/ml) | 
/ | 
0.69 |

Total Plate Count(cfu/g) | 
≤2000 | 
170 |

Size(80mesh pass rate)/% | 
/ | 
90 |

Loss on Drying/% | 
≤0.30 | 
0.17 |

PH | 
5.5~7.0 | 
conforms |