Guides

3M D9093 vs D9093C compared: both are Secure Click P100 hard-case filters with the same 99.97% filtration — the D9093C adds hydrogen-fluoride-resistant media and nuisance acid gas relief for semiconductor HF wet etch, fluoropolymer processing and HF acid handling. Who needs the HF version, why it is not a gas cartridge, picks and an 11-question FAQ.