While reviewing the Filament Guide, @youngmrcarlson did some digging and uncovered:
https://colorfabb.com/bronzefill >> specifications >> colorFabb bronzeFill - PLA/PHA + fine bronze powder
We don't mention PLA/PHA at all on our colorfabb product pages.
I wasn't able to quickly find that info on our existing TDS or SDS assets, it's something we should look into, and update as needed.
Filament Guide T3001
Product page copy
Technical Data Sheet (TDS)
Safety Data Sheet (SDS)
Product Regulatory Information Sheet (PRIS)