Are PHA cups marine biodegradable? And what does that mean?
Our coffee cups' PHA resin is certified marine biodegradable, breaking down 90% in marine settings, though it's best disposed of in compost facilities.
The PHA resin used in our coffee cups is certified marine biodegradable (ASTM D 6691). However, this does not mean you should throw your cup into the ocean. It means if a coffee cup accidentally ends up in the sea, it will break down significantly faster than conventional plastic.
A marine biodegradable certification means it’s been certified to reach at least 90% biodegradation in marine settings within 180 days (source).