Evaluation of oxidative resistance to hot chlorinated water

ASTM F2023 (PEX, PP) and ASTM F2263 (PE)

Chlorine resistance tests are performed to evaluate the oxidative resistance of piping materials and systems to chlorinated water. While many pipe materials have proved to be resistant to degradation, the ageing process can accelerate under more aggressive conditions with signifcant impact on lifetime and durability. For example, the common use of chlorine for disinfection purposes is increasing the importance of evaluating chlorine resistance of piping materials and systems.

Our accredited facility generates reliable and reproducible chlorine resistance data for an extensive range of materials and pipe constructions, allowing our customers to use the test results for certifcation according to “ANSI NSF”.

Test standards

For chlorine resistance tests Element applies the standard methodology of ASTM F2023 (PEX, PP) and ASTM F2263 (PE) for testing and evaluation of the long term chlorine performance. These methods can also be used for other piping materials.

Principle

The testing is conducted under accelerated conditions at elevated temperatures and pressures. The most common and accepted approach is to perform exposure
under ”worst case” conditions.

Standard test conditions

· Dimensions: up to OD 63 mm (2” US)
· Capacity: >200 pipe samples
· Temperatures: 20-120 °C
· Chlorine concentration: 0.5 – 4.3 ppm (mg/dm
3) (up to 100 ppm to simulate shock chlorination)
· Ph: 6.8 is set as standard (others on request)
· Flow rate: 54 dm
3/h (others are available upon request)