Information on the most widely used ASTM standards within the materials testing industry
Model: XQZ-20
XQZ-20 Methylene chloride tester/Dichloromethane soak testing machine is used to determine the resistance of unplasticised polyvinyl chloride (PVC-U) pipes to dichloromethane (methylene chloride) at a specified temperature (DCMT).
The gelation of PVC is one of the most important product quality considerations as it has an influence on impact strength and resistance to internal pressure. There are various methods to determine the gelation level in PVC pipes and profiles; the most common one is to use Methylene chloride according to various standards. The tester complies with EN 580 method B, ISO 9852 and equivalent.
Application: For plastic pipes, pipe fittings, sheet material to be carried out thermostatic control under the temperature of 5℃~65℃ and dichloromethane soak test under 20℃.
General Introduction
XQZ-20 Methylene chloride tester/Dichloromethane soak testing machine is used to determine the resistance of unplasticised polyvinyl chloride (PVC-U) pipes to dichloromethane (methylene chloride) at a specified temperature (DCMT).
The gelation of PVC is one of the most important product quality considerations as it has an influence on impact strength and resistance to internal pressure. There are various methods to determine the gelation level in PVC pipes and profiles; the most common one is to use Methylene chloride according to various standards. The tester complies with EN 580 method B, ISO 9852 and equivalent.
Application: For plastic pipes, pipe fittings, sheet material to be carried out thermostatic control under the temperature of 5℃~65℃ and dichloromethane soak test under 20℃.

Key Features
A piece of PVC-U pipe, of specified length, chamfered at one end to an angle dependent on its thickness, is immersed for (30 ± 1) min in dichloromethane, at a temperature T specified by the referring standard, to verify that the PVC-U is not attacked at that temperature. For safety reasons, the surface area of the dichloromethane is kept to the minimum and the dichloromethane is covered by a deep layer of water to reduce evaporation. After immersion in the dichloromethane, the test piece is held in the water layer to allow it to “drip” before final drying and inspection.
DCMT testing equipment;
Methylene chloride tester;
Dichloromethane soak testing machine;
Dichloromethane resistance tester;
ISO 9852 “Plastics piping systems - Unplasticized poly(vinyl chloride) (PVC-U) pipes - Test method for the resistance to dichloromethane at a specified temperature (DCMT)
EN 580 “Plastics piping systems - Unplasticized poly(vinyl chloride) (PVC-U) pipes - Test method for the resistance to dichloromethane at a specified temperature (DCMT)”
GB/T 13526 etc.,
Main Technical Specification
| Model | XQZ-20 |
| Bath temperature range | 5-65℃ |
| Temperature uniformity | ±0.2℃ |
| Temperature control accuracy | ±0.5℃ |
| Standard of work room | 300×240×220mm |
| Container standard size | Φ220×150mm |
| Power | 220V/110V, 50HZ/60HZ, 1 phase |
| Weight | 65Kg |
| Size | 500*570*830mm |
Main accessories
| Item | Quantity |
| Frame | 1 set |
| Container | 1 set |
| Sample bracket | 2 pcs |
| Documents (Manual, packing list, certificate) | |
Related auxiliary products you may interested
Standard
ISO 9852 specifies a method for determining the resistance of unplasticized poly(vinyl chloride) (PVC-U) pipes to dichloromethane at a specified temperature (DCMT). It is applicable to all PVC-U pipes, irrespective of their intended use.
Scope of application: Suitable for any homogeneous flat-walled, unplasticized PVC pipe, regardless of its intended use, It can be used as a means of rapid quality control in the production process. It is especially suitable for quality inspection and performance evaluation of PVC-U pipes.
Core test principles
The ISO 9852 standard specifies a method for determining the resistance of PVC-U pipes to methylene chloride at specified temperatures (DCMT). This method evaluates the plasticization uniformity and internal structural integrity of the pipe specimen by immersing the pipe specimen in methylene chloride solution and observing the degree of damage to the surface of the pipe after impregnation.
EN 580 specifies a solvent-resistance test (DCMT) for unplasticized poly(vinyl chloride) — PVC-U pipes, irrespective of their use. A chamfered pipe section is immersed in dichloromethane (DCM / CH₂Cl₂) at a specified temperature T for 30 minutes, then inspected visually for signs of attack.
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