Betekenis van:
erlenmeyer flask

Voorbeeldzinnen

1. Erlenmeyer flask basket for shakers
2. Erlenmeyer flask clamps for shakers
3. Erlenmeyer flask, of nominal capacity 250 ml.
4. Platform for Erlenmeyer flask clamps for shakers
5. Fit a reflux condenser to the Erlenmeyer flask.
6. Fit a reflux condenser to the Erlenmeyer flask. Boil for exactly 10 minutes.
7. 250 ml Erlenmeyer flask with standard ground-glass joint and with reflux condenser.
8. Fit a reflux condenser to the Erlenmeyer flask and immerse the latter in a boiling water bath.
9. Preheat a 250 ml Erlenmeyer flask (5.10) and a funnel (5.11) with inserted filter paper in the oven (5.6) set at 50 °C.
10. After exactly 15 minutes, remove the Erlenmeyer flask from the bath, transfer the contents to a 100 ml graduated flask, rinsing with a little cold water, and cool to 20 oC.
11. Pipette 50 ml of the filtrate (corresponds to 2,5 g of the sample) into a 250 ml Erlenmeyer flask, add 2,1 ml of hydrochloric acid (3.1) and shake vigorously. Fit a reflux condenser to the Erlenmeyer flask and immerse the latter in a boiling water bath.
12. Pipette 50 ml of the filtrate (corresponds to 2,5 g of the sample) into a 250 ml Erlenmeyer flask, add 2,1 ml of hydrochloric acid (3.1) and shake vigorously.
13. Using a pipette, transfer to an Erlenmeyer flask from 25 ml to 100 ml of the filtrate (according to the assumed chlorine content) obtained as described under 5.1.1, 5.1.2 or 5.1.3.
14. Using a pipette, remove an amount of filtrate which does not exceed 25 ml and which preferably contains from 40 to 80 mg of lactose and transfer it to a 300 ml Erlenmeyer flask.
15. Using a pipette, remove an amount of filtrate which does not exceed 25 ml and which preferably contains from 40 to 80 mg of lactose and transfer it to a 300 ml Erlenmeyer flask. If necessary, make up to 25 ml with water.