ASTM D 6538

1.1 This guide covers the selection and use of automatic wastewater samplers including procedures for their use in obtaining representative samples. Automatic wastewater samplers are intended for the unattended collection of samples that are representative of the parameters of interest in the wastewater body. While this guide primarily addresses the sampling of wastewater, the same automatic samplers may be used to sample process streams and natural water bodies. 1.2 The guide does not address general guidelines for planning waste sampling activities (see Guide D4687 ), development of data quality objectives (see Practice D5792 ), the design of monitoring systems and determination of the number of samples to collect (see Practice D6311 ), operational details of any specific type of sampler, in-situ measurement of parameters of interest, data assessment and statistical interpretation of resultant data (see Guide D6233 ), or sampling and field quality assurance (see Guide D5612 ). It also does not address sampling groundwater. 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3.1 Exception - The inch-pound units given in parentheses are for information only.