Standard Practice for Conditioning Plastics for Testing - ASTM
Requirements expand to 88 hours minimum for parts exceeding 7 mm. Application: General purpose quality control testing. Procedure B (Desiccation and Accelerated Drying)
General-purpose quality control for standard thermoplastic specimens.
: The results are interpreted based on the established limits for sediment content, which may vary depending on the application and the equipment manufacturer's specifications. astm d61821 pdf
The standard acknowledges that some specific plastic materials may have their own detailed specification that references ASTM D618-21 but with certain modifications. In such a case, the material's own specification takes precedence over this standard.
), decreasing tensile strength, and increasing impact resistance. The Three Core Objectives of ASTM D618-21
The practice clarifies that the conditioning procedures described are designed for reproducibility. The standard notes that depending on the material's thickness, type, and history, it might take anywhere from 20 to 100 days or even longer for a plastic sample to reach true equilibrium under normal room conditions. For this reason, conditioning for reproducibility, rather than true equilibrium, is typically used for most routine testing and quality control. Standard Practice for Conditioning Plastics for Testing -
: The test serves as an indicator of the overall condition and quality of the oil, guiding decisions on whether the oil needs to be replaced or if further detailed analysis is required.
ASTM D618 uses a uniform shorthand string to document the exact conditioning environment used prior to testing. The system formats these conditions as follows: D618 Plastic Conditioning | PDF | Humidity - Scribd
I notice does not appear to be a valid ASTM standard designation. ASTM standards follow a format like D618 (for conditioning plastics) or D1238 (melt flow), but D61821 is not recognized. : The results are interpreted based on the
Immersion in distilled water at 50 °C for 48 hours, followed by a rapid water-cooling phase to bring it back to 23 °C.
Rigid plastic trays, blister packs, and medical-grade films are conditioned to confirm their sterile barrier properties hold up across varying global storage climates. How to Access the ASTM D618-21 PDF
The ASTM D6182-1 PDF can be obtained from various sources, including:
The ASTM D6182-1 standard is officially known as "Standard Test Method for Determining the Toxicity of Chemicals with the Microtox Model". This test method is designed to evaluate the toxicity of chemicals in a variety of environmental matrices, including water, soil, and sediment.