Actronal 660 Acidic descaler to remove oxides and heat scale from copper and iron based alloys. Immersion 20 - 50°C Ronasalt 369 Water soluble, UNIVERSAL dry acid salt for oxide removal and surface activation Use in immersion mode or electrolytic mode 15 - 70°C. Contains Fluoride Actronal 660 + Ronasalt 369 Acidic descaler to remove oxides and heat scale from certain “difficult to process” copper alloys e.g. 7025 alloy when a smut free copper surface is required. Immersion at 25 - 40°C. Note Ronasalt 369 Contains Fluoride Circuposit Etch 3330 Acidic persulphate etch for copper / copper alloys, immersion or spray 20 - 50°C. Etch rate ca. 0.5 micron / min. at 20°C. Acid Cleaner 811 Acidic cleaner for copper and brass, free of fluoride, thiourea and sulphate, especially for lead containing brass, 20-50°C Activator 1424 (ER) Acidic activator for steel / Kovar / some stainless steels / aged electroless nickel. Immersion mode 45 - 80°C Ronatab Acid Activator PC-1 Low foaming acidic activator for nickel / nickel based substrates, immersion mode 20 - 30°C Beizentfetter LF An inhibitor for use in sulphuric acid + hydrochloric acid de-ruster (pickle) for use on iron and steel, 20 - 45°C. Ronaclean DLF + 50g/l KCN Alkaline activator for anodic activation of Kovar or nickel surfaces following anodic alkaline chromium stripping. Immerse in the activator, 75 g/l Ronaclean DLF, 50 g/l NaCN, 30 - 50oC, 2 - 4 minute anodic at ca. 6 volts. Minimum c.d. 2 amp/dm2. DurALclean Acidic etch cleaner for aluminium that can be used in dip or spray mode, 20 - 40°C Contains Fluoride This product is no longer sold by RHEM but can be purchased from Asbury Brodie in UK under the name ALUKLEEN. Duraprep XP-2323 Zincate Mild acidic zincate treat for alumina, easy to control, usable for high Si-alloys, pH 3.7 - 4.0, room temperature Duraprep 520 Alkaline, cyanide free zincate treat for Alumina and its alloys, easy to operate, room temperature