Using the Combi Set you are able to obtain two Air Change Rates with just one injection. This allows to measure the ventilation status at two different ventilation regimes. At start tracer gas is injected into the room. Then 5 samples are taken at the first ventilation regime. Then the regime is changed and another 5 samples are collected.

There are no more differences between the Standard and the Combi Set. The Combi Set can be advantageous for the following situations:

The Combi Set therefore consists of one injection syringe and 10 empty sample syringes, instructions and protocol form.

The first part of the video shows, how to do an ACR test with the Standard-Set, the second part provides guiding in using the Combi-Set.