Abstract
An investigation of the use of nephelometry in evaluating rubber closures and washing procedures is reported. Evidence is presented that a nephelometric measure of haze can be of value in comparing closures, solutions, and washing procedures for production of haze. The closures tested varied in their property of producing haze and sodium bisulfite and acetic acid solutions were found to prevent haze formation. An acetone wash was shown to reduce haze considerably, indicating that haze is partly due to sulfur present in the closures.
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