ASTM D3731-20

5.1 Data on the chlorophyll content of the algae have the following applications:

1.1 These practices include the extraction and the measurement of chlorophyll a, b, and 1.1.1 Spectrophotometric, trichromatic practice for measuring chlorophyll a, b, and 1.1.2 Spectrophotometric, monochromatic practice for measuring chlorophyll a corrected for pheophytin a; and for measuring pheophytin 1.1.3 Fluorometric practice for measuring chlorophyll 1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 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. 1.4 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.