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These are not scientific tests and there are no claims put forward.This is a best-effort document to study practical disinfectant compatibility with multiple plastic compounds used in the production of face shields.
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MaterialMethodCompatible?Recommended?Tested byComments
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PET filmDetergent & waterYESYESBill SchongarEffective but slow
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PET filmAlcohol WipesYES*YES*Maxwell Andrews*May cause hazing in some variations of PET requiring secondary cleaning. Please test on your material
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PET filmIso/ethanol immersionYESYESMaxwell AndrewsCandidate for bulk disinfection of shields. Requires well-ventilated area.
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PET film"Defender" floor cleanerYESYESBill Schongarsimilar to detergent & water
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PET filmDry heat 200-250˚FYESYESMaxwell AndrewsGood Candidate for bulk pre-disinfection of shields at fabricator site, but likely not sufficient for end use. Use in flat-form.
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PET filmSteam 100˚C (no pressure)YESNOMaxwell Andrewswhile it works, it is slow and unlikely to meet clinical standards
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PET filmSteam 114˚C (11PSI)MarginalNOMaxwell AndrewsDid not impact integrity of the material but did deform the shape slightly. Suggest using other methods.
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PET filmSteam Autoclave (130C)Likely NoNOnot testedlikely to deform plastic
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PET filmBleach WipesMarginalNOVariousMay leave a hazy residue requiring secondary cleaning
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PET film0.2% bleach immersionMarginalNOMaxwell AndrewsDoes not damage shield, but leaves a hazy residue requiring secondary cleaning process
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PET filmETO gasYESYESnot testedPer PET manufacturer recommendations
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PET filmUV-C ionicYES*Maybenot tested*Too many cycles will damage the plastic, but OK for single use items*
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PET filmHydrogen Peroxide 35%YESYESMaxwell AndrewsNo adverse reaction with plastic
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PET filmHydrogen Peroxide 3%YESYESMaxwell AndrewsUse a few drops of detergent to increase wetting
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PET filmBZK wipesTBDTBD
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PET filmChlorhexidine Gluconate ScrubYESYESMax AndrewsScrub and rinse with DI water
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PET filmQuaternary AmmoniumTBDTBDMA to test 3/24I thought I had this on hand but I do not.
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Polycarbonate
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