High-Density Polyethylene Infrared Spectroscopy—Proceed as directed for Test Methods, Multiple Internal Reflectance. The corrected spectrum of the specimen exhibits major absorption bands only at the same wavelengths as the spectrum of USP High-Density Polyethylene RS.
Differential Scanning Calorimetry—Proceed as directed for Test Methods, Thermal Analysis. The thermogram of the specimen is similar to the thermogram of USP High-Density Polyethylene RS, similarly determined, and the temperature of the endotherm (melt) in the thermogram of the specimen does not differ from that of the USP Reference Standard by more than 6.0°.
Heavy Metals and Nonvolatile Residue—Prepare extracts of specimens for these tests as directed for Test Methods, Physicochemical Tests, except that for each 20.0 mL of Extracting Medium the portion shall be 60 cm2, regardless of thickness.
HEAVY METALS—Containers meet the requirements for Test Methods, Physicochemical Tests, Heavy Metals.
NONVOLATILE RESIDUE—Proceed as directed for Test Methods, Physicochemical Tests, Nonvolatile Residue, except that the Blank shall be the same solvent used in each of the following test conditions: the difference between the amounts obtained from the Sample Preparation and the Blank does not exceed 12.0 mg when water maintained at a temperature of 70° is used as the Extracting Medium; does not exceed 75.0 mg when alcohol maintained at a temperature of 70° is used as the Extracting Medium; and does not exceed 100.0 mg when hexanes maintained at a temperature of 50° is used as the Extracting Medium.
Components Used in Contact with Oral Liquids—Proceed as directed for Test Methods, Physicochemical Tests, Buffering Capacity.
Source from USP
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