Biodegradation tests were performed with 3 g samples of
LDPE films (1.5 9 1.5 cm) that had been dried overnight
at 60 C, weighed, disinfested (30 min in 70 % ethanol),
air-dried for 15 min in Laminar air flow chamber and
added to Erlenmeyer flasks containing 300 ml of synthetic
medium.