A dilated glass cylinder with a glass joint (500-ml) was used as a collection chamber in which airflow was generated using a vacuum pump.
Gaining the use of a vacuum pump was difficult, and the renewal of the vacuum within the desiccators was not an easy task.
One source of vibration is from an additional vacuum pump, attached to evacuate the camera, without mechanical de-coupling.
This consists of a floor-standing unit containing a vacuum pump, disposable plastic vacuum canister, electric motor and computerised control unit.
At the start of the procedure the operator joins the connector to a longer piece of tubing from the vacuum pump.
The air pressure was adjusted in these bottles by a vacuum pump.
Violence must be exerted if one is to reduce the vacuum pump to an animal to be dissected.
Green asparagus (10 g) was rapidly crushed in a flask fitted to another flask immersed in liquid nitrogen and connected to a vacuum pump.
