Polypropylene vs PETG packaging

Hello, all.

Does anyone know which type of plastic (PP vs PETG) might not be suitable for a toner with (up to) 15% ethanol and a pH of 3.6?

The supplier I am using is well-known but say they do not make claims about which specific types of products are contraindicated.

(I prefer to use glass packaging, but there are no options if you want to go airless.)


  • chemicalmattchemicalmatt Member, Professional Chemist
    I recommend using PETG for ethanol content such as this. Polypropylene will work but not as well. Both resins hold up at that  pH too.
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