The often used unit [CM-%] is nothing other than the unit [M-%] measured with a carbide meter. The unit [M-%] is often used with kiln dried samples and indicates the weight loss in relation to the dry mass. Read more
Normally, pipe free areas should be marked for the taking of carbide measurement samples. In reality however, theses free places tend to get used up before the floor is really dry or there is no way of choosing the most humid spot. If you want to carry on working, there are three different aids you can use to help yourself. Read more