Description
| Chemical & Physical Properties |
|
Specifications |
Typical Values |
Method |
Principle |
| Moisture, m/m | max 0.5 % | 0.4 % | IDF Standard 26:1964 | Gravimetry, drying; 103±2 0C | |
| Protein, m/m (Nx6,38) | max 0.4 % | 0.3 % | IDF Standard 20B: 1993 | Kjeldahl, titrimetry | |
| Ash, m/m | max 0.2 % | 0.05 % | IDF Standard 90:1986 | Furnace; 825±25 0C | |
| Lactose, m/m | min 99 % | 99.25 % | NADRG: 1978 | Subsidence, (Cu2O) | |
| pH (in 10 % solution) | min 5.50 – 7.00 | 5.70 | TS 11860 | pH metre | |
| Solubility index, ml | max 1 | 0.25 | IDF: 1964 | Centrifugation | |
| Scorched Particles | Disk A/B | A | ADMI: 1971 | Visual comparasion with standard disks | |
| Microbiological Properties | Total plate count, cfu/g | max 5.000 | 2.500 | TS 1019 | Plate Count Agar |
| Coliform, cfu/0.1 g | negative | negative | FDA: 1998 | Fluorocult VRB Agar | |
| E.coli, cfu/g | negative | negative | FDA: 1998 | Fluorocult VRB Agar | |
| Staph.aureus, cfu/g | negative | negative | Anon., 1998 (38) | Baird-Parker Agar | |
| Salmonella, cfu/25g | negative | negative | TS 8907 | Selenit-Cystin Broth & Bismut-Sülfite Agar | |
| Yeast & Mould, cfu/0.1 g | max 10 | negative | Pitt&Hocking, 1997 (86) | YGC Agar |
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