ACE developed this blue mouthpieces for private, official or clinical applications. Each one is hygienically and single packed.
A big advantage of the ACE mouthpieces is the non-return valve inside the mouthpiece. This is a special feature which was developed for 2 reasons:
Hygienic use: No kind of bacteria or saliva (from previous measurements) can get into your mouth / the mouth of a test person.
Manipulation of the test: A manipulation is avoided. This is very important for clinical or official tests.
This product is not intended for multiple use, each individual test should be conducted with a new mouthpiece. You must not wash these mouthpieces or use them in any manner than for their intended use.