becausewecare™ products have been tested to make sure there are no harmful effects on plant growth and germination once the bioplastics begin to decompose.
To investigate any statistically significant difference, a sample was composted according to the ISO 16929:2002(E) standard test method. The resulting compost was the compost used for the toxicity test. To maximise the integrity of the test, control compost was also separately prepared, without any packaging material added to the blend.
Two plant species from two different families were chosen: Monocotyledonae Barley (Hordeum vulgare), and Dicotyledonae Pea (Pisum sativum). These plants were grown under controlled hydroponic conditions at Swinburne University.
The test and control compost samples were then mixed thoroughly with garden potting mix, and examined under aerobic composting processes in line with OECD 208 A and the evaluation criteria specified in AS 4736-2006.
There were no visible phytotoxic effects; germination and biomass percentages in both plant species of compost were higher than 90%. The quality of the compost had not been affected negatively in any way. In fact, the presence of becausewecare™ bioplastic in the initial blend enhanced the growth and biomass production.
In conclusion, becausewecare™ bags have absolutely no harmful after-effects on soil as part of the degradation process.
If you would like to know some more information about certifications and Compostable products in general, watch this informative video from the Australasian Bioplastics Association (ABA). The ABA issues certifications for the Australian Standard AS4736-2006 in Australia and New Zealand.