Betekenis van:
petri dish

Voorbeeldzinnen

1. "Let me get a sample," and she transferred part to a petri dish.
2. Petri dish stand for shakers
3. The filter shall then be stored in a closed petri dish or sealed filter holder until needed for testing.
4. The filter (pair) must then be stored in a closed petri dish or sealed filter holder until needed for testing.
5. At least one hour before the test, each filter (pair) must be placed in a closed, but unsealed petri dish and placed in a weighing chamber for stabilisation.
6. It shall be conditioned in a petri dish, which is protected against dust contamination and allows air exchange, for at least one hour, and then weighed.
7. They shall be conditioned in a petri dish, which is protected against dust contamination and allows air exchange, for at least one hour, and then weighed.
8. At least one hour before the test, each filter shall be placed in a petri dish, which is protected against dust contamination and allows air exchange, and placed in a weighing chamber for stabilisation.
9. At least one hour before the test, each filter shall be placed in a petri dish, which is protected against dust contamination and allows air exchange, and placed in a weighing chamber for stabilization.
10. By using a small spoon or a spatula one half of the decanted impurities is transferred to a small Petri dish or a microscopic slide for microscopic identification of a possible content of animal constituents (meat fibres, feathers, bone fragments, …).
11. It shall be conditioned in a partially covered petri dish, which is protected against dust contamination, for at least one hour, but not more than 80 hours, and then weighed.
12. At least one hour before the test, each filter shall be placed in a partially covered petri dish which is protected against dust contamination, and placed in a weighing chamber for stabilisation.
13. At least one hour before the test, each filter shall be placed in a partially covered petri dish, which is protected against dust contamination, and placed in a weighing chamber for stabilisation.
14. For diesel engines only, the particulate filters must be returned to the weighing chamber no later than one hour after completion of the test and must be conditioned in a closed, but unsealed petri dish for at least one hour, but not more than 80 hours before weighing.
15. It is therefore recommended to spread 100 µl from each of the samples, 1/100 up to 1/10000 dilutions onto MTNA medium or NCP-88 medium (Appendix 5) (if using 90 mm diameter petri dishes- adjust volume for alternative dish sizes), using spreaders (hockey sticks) and the spread plate technique.