Cleaning chemistry for Industry
| Cleaner | pH (soln.) | Dangerous goods | Application | Suitable materials | Impurities | Dosage for ultrasonic baths | Adjustments for ultrasonic baths |
|---|---|---|---|---|---|---|---|
| ETC A4 Universal Alkaline |
11 | No | Universally applicable e.g. for carburetors and injection nozzles, for overhaul cleaning of circuit boards, protecting masks, toner containers, etc. | Stainless steel, steel*, iron*, gray cast iron*, aluminium & light metals, brass, non-ferrous & precious metals, nickel, zinc, plastics, ceramics, glass, quartz, rubber. * For low-alloy, rust-sensitive metal alloys, add corrosion protection (Elma-KS, 0.1% in water) to the cleaning and rinsing bath as required. |
Oils, greases, soot, combustion residues, cooling lubricant emulsions, lapping and polishing agents, dust, fingerprints | 2 % = 20 ml A4 + 980 ml water In case of strong soiling, increase the dosage up to 5 %. |
Cleaning temperature: 50 - 80 °C Cleaning time: 3 - 5 min |
| ETC N1 Sensitive Neutral |
7 | No | For gentle cleaning of sensitive assemblies and plastics | Metals (including aluminium and light metal alloys), glass, ceramic, plastics, rubber and sealing materials (elastomers) Please test the resistance of magnesium alloys before application! |
Oils, greases, polishing, lapping and grinding materials, fingerprints and dust | 5 % = 50 ml N1 + 950 ml water |
Cleaning temperature: 50 - 80 °C Cleaning time: 1 - 5 min |
| ETC S1 Metal passivation & Deoxidising Gentle Acidic |
3 | No | For descaling and derusting, for citric acid passivation of chrome-alloyed steels as well as for brightening and restauration of non-ferrous metals | Stainless steel, non-ferrous metals such as brass, aluminum and light metals, plastics and glass. For passivation of chrome-alloyed steels Not suitable for magnesium alloys, zinc. |
Lime, rust, oxide layers, mineral oils and fats Brass and copper alloys are brightened. |
Ultrasonic cleaning: 1 % = 10 ml S1 + 990 ml water up to 5 % possible. Passivation: 10 % = 100 ml S1 + 900 ml water up to 20 % possible. |
Temperature: 30 - 80 °C Cleaning time: ~2 min Passivation time: 10 - 30 min |
