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Moisture, conditioning and water content

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The properties of plastics often depend on the climatic conditions. Some plastics are therefore specially conditioned or air-conditioned.

Pellet moisture is often a disruptive factor for processing, which can lead to material degradation.
After processing, polyamides in particular are specifically moistened in order to achieve optimum properties.

OMPG has the following options for determining the moisture content of materials and components:

  • Aquatrac
  • Drying in an air circulation drying oven
  • Drying in a vacuum drying oven
  • Karl Fischer titration

The moisture absorption of plastics can be determined on standardized sample panels 60mm x 60mm x 1 or 2mm in accordance with DIN EN ISO 62.

The rapid conditioning of polyamides in accordance with DIN EN ISO 1110 can be offered both in a climate chamber and in an aluminum-laminated sample bag at 70°C in accordance with VW regulations.

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Here you will find a list of all test standards for which we offer services in this area. All currently accredited standards can be found on the Accreditation page in our list of services.

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List of test standards for Moisture, conditioning and water content
DIN EN ISO 1110

Plastics – Polyamides – Accelerated conditioning of test specimens

DIN EN ISO 15512

Plastics – Determination of water content (e.g. Aquatrac, Karl Fischer titration; IR drying; drying in a drying oven)

DIN EN ISO 62

Plastics – Determination of water absorption

GMW 3038

Polyamide 66 – Glass Fiber Reinforced, Heat Stabilized

Mercedes-Benz DBL 1224

Requirements for Thermoplastic Synthetic Materials for Applications in the Interior

VW 50125

Polyamide 6 (PA6) for finished parts of vehicle interiors – Material requirements

VW 50127

Polyamide 66 (PA66) for finished parts of vehicle interiors – Material requirements

VW 50133

Polyamide 66 (PA66) for finished parts outside the vehicle interior – Material requirements

VW 50134

Polyamide 6 (PA6) for finished parts outside the vehicle interior – Material requirements

VW TL 52682

PA66, glass fiber reinforced, for coolant-carrying finished parts – material requirements (PA66-GF30, hydrolysis-stable, glycol-resistant, cooling water, processing quality)