The VDLUFA regularly carry out feed surveys which serve as a quality assurance for the checking and documentation of analytical standards. The VDLUFA is open to non members and provides an opportunity for public interlaboratory testing. Using this facility, Precisa Gravimetrics GmbH, a branch of Precisa Gravimetrics AG in Germany, was able to demonstrate that automatic moisture and ash determination with prepASH® achieved excellent results with reduced effort.
Moisture content is a critical criterion to determine the acceptability of treated sewage sludge.
Starting with fresh sludge, the moisture content should be around 70%-80%. Dried sludge (cake) needs less than 10% of moisture. The sludge is ashed at 550°C to determine the volatile solid.
Medical marijuana uses the chemicals within the marijuana plant to help reduce pain and treat certain diseases. The plant contains more than 100 different chemicals called cannabinoids. Each one has a different effect on the body, with delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) being the main chemicals used in medicine.
One of the most important parameters in analytical testing of many materials and substances is the determination of dry weight and ash. Such analysis can often be time-consuming and can carry a high error potential when performed in the classic way with a drying/muffle oven and precision balance.