MECWASH CHEMICAL CONSIDERATIONS0 pages

MECWASH CHEMICAL CONSIDERATIONS Which cleaner should I use? The choice of cleaner dpends on: The substrate that is being cleaned and the residue on the substrate The following provides a useful guide. Please consult MecWash for further details and for specialist applications such as Aero-Space Projects. CHEMICAL APPLICATION/pH AC-20 pH6.5 (concentrate)/7 (working dilution) Mild chemistry base for brass and aluminium alloys, will brighten; Very low residue cleaner; Suitable for single stage process without rinse; Removal of light soluble oils; only short term rust inhibition on ferrous parts AC-20IF pH 6.5(concentrate)/7 (working dilution) As AC20 but 'inhibitor free', making it ideal for ideal for yellow metal alloys; Will brighten and can be used without a rinse AC-25 pH10.5 (concentrate)/10.1 (working dilution) Mild chemistry base; Multi-metal use; Low residue cleaner; Low foam; Excellent corrosion protection; Removal of light to medium oils; Also used as a 'Rust Inhibitor' additive in rinse tanks for ferrous parts AC-25IF pH10.5 (concentrate)/10.1 (working dilution) Mild chemistry base; Multi-metal use; Low residue cleaner; Low foam; Reduced ferrous corrosion protection; Ideal as an additive in rinse tanks for aluminium and brass. AC-25 EAF pH10.5 (concentrate)/10.1 (working dilution) Mild chemistry base; Multi-metal use; Low residue cleaner; Low foam; Excellent corrosion protection; Removal of light to medium oils; Also used as a 'Rust Inhibitor' additive in rinse tanks for ferrous parts. Benefits from enhanced antifoam package. AC-30 pH 12.0 (concentrate)/10.6 (working dilution) Medium alkalinity, free of caustics and silicates; High detergency; Ferrous metals; Removes coolants, oils and greases; Short term rust inhibition; Also highly effective on plastics/plastic containers; No rinse AC-32 & AC-32 EAF pH10.5 (concentrate)/10 (working dilution) As AC30 but with multi-metal compatibility; Improved low foam and rust inhibition; Needs rinse for brass parts. EAF version has additional antifoam properties. AC-32IF pH10.5 (concentrate)/10 (working dilution) As AC32 but with reduced ferrous corrosion inhibition and ideal for aluminium and brass with very slight brightening properties. AC-32S pH10.5 (concentrate)/10 (working dilution) As AC32 but with enhanced oil splitting properties for use in high mineral oil and emulsified oil content applications. AC-33 pH12 (concentrate)/11.5 (working dilution) Medium alkalinity cleaner for plastics. Can also be used for ferrous parts, but not suitable for non-ferrous alloys.