* High temperature
* High pressure or vacuum
* Volatile & biohazard material
* Corrosive material
* pH value and colour of the product
The neutron moisture measurement is based on the principle that fast neutrons are slowed down (or moderated) through their collision with hydrogen nuclei. Thus, a cloud of slow neutrons is created around a source of fast neutrons coming from an americium/beryllium source, while the concentration of slow or thermal neutrons depends only on the hydrogen content in the measuring volume.
Nuclear measurement will not change the products being measured!