X1.2.1 Concentrations of trace metals are measured as extracts in simulated body fluids. The metal’s concentration in extracts is based on the surface area of the plastic extracted from which the total amount of metal deliverable to the patient may be estimated.
1.1 This specification covers polyethylene plastics (as defined in Terminology D 883
1.2 This specification is not applicable to ultra-high molecular weight polyethylenes (UHMWPE) plastics, such as those used in joint implants, and so forth.
1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. X1.1.1 This practice covers the analysis of extractable metals from plastics intended for use in medical device application. X1.1.2 Formulated raw materials or finished products may be used.
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