1.1
This Standard specifies the laboratory test method condition for determining
the anaerobic biodegradability of plastic materials on exposure to primary
anaerobic digestor sludge obtained from the treatment of primary clarifier
sludge at a municipal waste water treatment plant. The degree and rate of anaerobic biodegradability of a plastic material in the
environment determines to what extent and in what time period plastic may be
eliminated from the environment. The method determines the degree of anaerobic
biodegradability by measuring the gas volume evolved (carbon dioxide and
methane) as a function of time when the plastic is exposed to anaerobic,
munipically derived, digestor sludge. 1.2
The test method is designed to determine the biodegradability of plastic
materials relative to a positive standard material in an anaerobic environment. 1.3
The test method is designed to be applicable to all plastic materials which do
not inhibit the microbial population present in anaerobic digestor sewage
sludge. 1.4
This Standard involves the use of hazardous chemicals and procedures employing
potentially harmful microbiological agents. This Standard does not purport to
address all of the safety problems associated with its use. It is the
responsibility of the user to establish appropriate safety- and health-related
measures and any regulatory limitations prior to use. Specific hazard warnings
are given in Clause 8.