Plastics Technology Laboratories  

Test Sample Preparation Molding, Conditioning

ASTM D3641
ISO 294, 3167

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In many cases, the material available for testing is not in the final form required by the test specification. If only resin is available, PTLI owns injection molds for many of the standard test samples, and the molding is done at an approved outside molding service. ASTM provides guidelines for molding (ASTM D3641). ISO provides guidelines for molding (ISO 294) and specifications for a multipurpose test sample (ISO 3167).

Conditioning Procedures:
Most ASTM and ISO test specifications require a conditioning period at 23 C and 50% RH prior to testing to ensure that the test specimens are stabilized at the required test conditions and to provide consistency for material comparisons. The period of time required depends on the specific material, the test to be done, and the specifying agency. At PTLI, a sophisticated state of the art temperature humidification system precisely controls and monitors the conditioning environment 24 hours a day to ensure that 23 C and 50% RH specification requirements are precisely met. This same system also provides the controlled testing environment required for A2LA, ISO 17025 Accreditation. Alternate conditioning requirements utilize calibrated and monitored ovens and temperature humidity cabinets to precisely meet any alternate exposure requirements.

Equipment used at Plastics Technology Laboratories, Inc.:
Injection molds
Conditioning chamber
Authorized molders and machinists

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**Please note that this test description is intentionally generic in nature and aimed at providing a descriptive summary to enhance test understanding. For more information please contact a Intertek PTL Technical Representative at . Due to copyright restrictions, we are not able to provide copies of standards. Standards can be obtained from appropriate standards authorities.

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