Blog / Archive Biodegradable Plastic Packaging 5 January 2018 — by Barry Bassett We switched to EPI biodegradable plastic to seal filters. We tested this plastic ourselves to see how it degrades and found that it didn’t perform as well as we had hoped and plan to change to potato starch based tubing later in 2022. You might be interested to note that this change was inspired by client feedback in our annual customer questionnaire survey.