1)   NF11

Appearance:  yellow to greenish yellow crystalline powder
Identification: (A), (B), (C), (D), ( E ) positive reactions
Assay: 95.0%min
Loss on drying: 5.5-9.0%
Residue on ignition:  0.5%max
Chlorophyll:  0.004%max
Red pigment: 0.004%max
Quercetin: 0.5%max

Microbiological tests:

Total plate count/1g: 1000max
Yeast and mould/1g: 100max
E. Coil/1g: Absence

Package:  25kg/ fibre drum 

2)   EP9

Appearance:  Yellow or greenish-yellow powder

Identification:

First identification: B 
Second identification: A. C. D
-A (UV/ Vis absorption of methanol solution between 210nm and 450nm )  ----  2maxima at 257nm and 358nm , specific absorbance at 358nm is 305-330nm
-B (IR)  ---- Comparison :  rutoside trihydrate CRS
-C (TLC) ---  Principle spot is similar to that of reference solution
-D ----  Dissolve 10mg in 5ml of alcohol R, add 1g of Zn R and HCL R1,  red color develops

Assay: 95.0%~101.0%
( anhydrous substance, Titration with 0.1M N(C₄H₉)₄OH )

Tests:

Light-absorbing mpurities, at wave ength between 450nm and 800nm:  0.10max
Substances insoluble in methanol: 3.0%max

Related substances:

Impurity A:  Isoquercitroside : 2.0%max
Impurity B:  Kaempferol-3-rutinoside:  2.0%max
Impurity C:  Quercetin: 2.0%max
Any other impurity:  0.1%max
Total:  4.0%max

Moisture: 7.5-9.5%
Sulphated ash: 0.1%max

Residual solvents:

    Methanol: 3000ppm
    Acetone:  Absence
    Propyl alcohol:  Absence

Package: 25kg/ fibre drum