Standard Methods Agar w/Tween 80 and Lecithin (Plate Count Agar w/Tween 80 and Lecithin) (DM452) is recommended for sanitary examination of surfaces and for counts before and after treatment with disinfectants.
| Ingredients | Gms / Liter |
| Part A | |
| Casein enzymic hydrolysate | 5.00 |
| Yeast extract | 2.50 |
| Dextrose | 1.00 |
| Lecithin | 0.70 |
| Agar | 15.00 |
| Part B | |
| Polysorbate 80 (Tween 80) | 5.00 |
| Final pH: 7.0 ± 0.2 at 25°C | |
| Formula may be adjusted and/or supplemented as required to meet performance specifications | |
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