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1.1 This test method covers the wet chemical determination of total aldehydes in styrene monomer. Total aldehydes are calculated and reported as benzaldehyde.

1.2 This test method is applicable to samples with aldehyde concentrations to 0.013 mass%. The Limit of Detection (LOD) is 0.0006 mass% and the Limit of Quantification (LOQ) is 0.0020 mass%. The LOD and LOQ were calculated based on the data in Table 1.

1.3 In determining conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.

1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 8.

1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

4.1 This test method is suitable for determining the quantity of aldehydes, both for quality control and quality assurance of the product.