The Methylene Chloride Test is meant to check the gelation in rigid PVC pipes. This method is based on various national and international standards, where specified test temperature and duration concludes resistance of unplasticized PVC pipes against dichloromethane.
A piece of PVC-U pipe of specified length, chamfered at one end to an angle dependent on its thickness, is immersed for a fixed period of time in a thermo controlled dichloromethane bath in order to verify that the PVC-U is not attacked at the temperature specified in the product standard.
The test pieces are dried in air and then examined to observe whether the PVC has been attacked or not.
Available chamber sizes are : 350 x 350 x 200 mm, 650 x 650 x 300 mm & 650 x 650 x 500 mm