Lactose

Items Of Test

Standard

Result Of Test

Identification

Meets

Meets

Specific Rotation

+54.4~+55.9

+54.7

Acidity Or Alkalinity

Add 0.3ml Of Phenolphthalein TS: The Solution Is Colorless, And Not More Than 0.4ml Of 0.1N Sodium Hydroxide Is Required Of Produce A Red Color

Meets

Loss On Drying %

≤0.5

0.04

Water %

≤1.0

0.3

Heavy Metals(as Pb) %

≤0.0005

less Than0.0005

Residue On Ignition%

≤0.1

less Than0.03

Protein And Light-absorbing Impurities

The Absorbance Divided By The Path Length In Centimeters Is Not More Than 0.25 In The Range Of 210 To 220nm And Is Not More Than 0.07 In The Range Of 270 To 300nm

Meets

2. TPC, Escherichia Coli, Mould And Yeast

TPC (cfu/g)

less Than100

less Than10

Yeast &mould (cfu/g)

less Than50

less Than10

Escherichia

Absence

Not Detecte