QWWERTY: jenze autori nepisou jestli nebezpeci jde z PETG, nebo z aditiv v tom plastu:
"The latent cytotoxicity may stem from the base polymer matrix itself, the complex proprietary mixture of industrial additives (such as plasticizers, stabilizers, and pigments), thermal degradation by-products generated during the extrusion process, or a synergistic effect of these components."
...
"The exact chemical identity of the cytotoxic agents remains unknown."
Takze je klidne mozne, ze filament PETG jednoho vyrobce bude ok, a jineho spatny.
Navic na PETG jdou najit clanky o jeho biokompatibilite, takze bych PETG jako takove nezahazoval.