The PVC Thermomat is designed for the determination of the stability time for PVC products to DIN Standard 53 381 Part 1
In order to quantify the thermal stability of PVC products, they have to be subjected to thermal stability tests.
The plastic product is heated to a temperature of 200C and the resulting hydrochloric acid vapours are transferred by a nitrogen gas carrier to a measuring vessel containing distilled water.
Here the conductivity of the dilute hydrochloric acid is monitored. The time, which elapses until a certain amount of decomposition product appears, is called the "stability time", which is product specific and depends on the decomposition temperature. DIN Standard 53 381 Part 1 was drawn up for the determination of the stability time for PVC products; the PVC Thermomat is ideally suited for carrying out this determination automatically, reproducible and accurately.
The instrument's wet chemistry section can accommodate up to 8 different samples at a time, in two heating blocks of four samples.
Each heating block can be set at different temperatures over the range 50-220C.
