1.2
Vac. Test (Flow indicator):
The Vac. Test is meant for testing the vacuum holding capacity of the air-sampling pump as
well as to see the completion of sampling.
1.3
Stopper:
The air-sampling pump can lock the shaft after pulling and reaching 50 cc (1/2 stroke) or 100
cc (full stroke) mark. For locking, the red dots on the stopper and shaft have to be aligned. In
this position when the shaft is pulled it gets locked at 50 or 100 cc mark. By turning the handle
right or left by 90 degree when in the locked position, the shaft is freed.
1.4
Rubber tube connector:
The rubber tube connector is meant for securely holding the detector tube for drawing
the sampling air.