I just made the mistake of using IPA on my MCRES-Micro and I just finished tapping it all to G1/4. Oh well.
|Isopropyl alcohol attacks acrylic as it tends to promote crazing in acrylic, as it does in many transparent plastics. Many acrylic grades are more alcohol-resistant than others. As we know resistance is typically a function of the molecular weight of the polymer. Thus higher molecular weight provides better alcohol resistance. Isopropyl alcohol solution when diluted can be used to wipe down acrylic without adverse reaction. These Acrylic copolymers, particularly those with styrene, offer improved chemical resistance but do not transmit light as well as 100% PMMA.|