Oxoid Plate Count Agar (Dehydrated) 500 gr
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Stok Kodu
CM0325B
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3.313,98 TL
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| Oxoid Plate Count Agar (Dehydrated) 500 gr | ||||
| PLATE COUNT AGAR | ||||
| TRYPTONE GLUCOSE YEAST AGAR | ||||
| Code: CM0325 | ||||
| A medium for the enumeration of viable organisms in food, animal feed and water samples | ||||
| Typical Formula* | gm/litre | |||
| Tryptone | 5.0 | |||
| Yeast extract | 2.5 | |||
| Glucose | 1.0 | |||
| Agar | 9.0 | |||
| pH 7.0 ± 0.2 @ 25°C | ||||
| * Adjusted as required to meet performance standards | ||||
| Directions | ||||
| Add 17.5g to 1 litre of distilled water. Dissolve by bringing to the boil with frequent stirring, mix and distribute into final containers. Sterilise by autoclaving at 121°C for 15 minutes. | ||||
| Description | ||||
| Plate Count Agar is equivalent to the medium recommended by the APHA1, PHLS 2 and ISO3,4 for the plate count of micro-organisms in food. | ||||
| The APHA method consists of the preparation of pour plates using diluted samples, and counting colonies after incubation. Incubation is for 48 hours at 32°C or at 35°C for the Standard Plate Count. For the enumeration of micro-organisms with other temperature requirements, plates may also be incubated for 7-10 days at 5-7°C: for 3-5 days at 20°C; for 2-3 days at 45°C; or for 48 hours at 55°C. See the APHA1 publication for details. | ||||
| Samples should be tested following the method described in the appropriate standard. | ||||
| The quality control of Plate Count Agar includes testing in accordance with ISO 11133:20145. | ||||
| Storage conditions and Shelf life | ||||
| Store the dehydrated medium at 10-30°C and use before the expiry date on the label. | ||||
| Store the prepared plates at 2-8°C. | ||||
| Appearance | ||||
| Dehydrated medium: Straw coloured, free-flowing powder | ||||
|
Prepared medium: Straw coloured gel
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