Cleaning chemistry for watches & jewellery
| Cleaner | pH (soln.) | Dangerous goods | Application | Suitable materials | Impurities | Dosage for ultrasonic baths | Adjustments for ultrasonic baths |
|---|---|---|---|---|---|---|---|
| EC 90 Neutral Polish & Soil Remover |
8 | No | Jewellery and watch parts also made of sensitive materials such as aluminum and soft stones | Metals (incl. aluminium and light metal alloys), coloured or lacquered surfaces, plastic, ceramic, glass and rubber, hard and soft stones The cleaning of amorphous and soft stones (e.g. pearls, corals, amber etc.) is recommended in ultrasonic bath at frequencies ? 80kHz (e.g. Elmasonic P) or in immersion bath! |
Fats/greases, oils, skin residues, sweat, dust, fingerprints, polish pastes and machining residues | 2 % = 20 ml EC 90 + 980 ml water In case of strong soiling, increase the dosage to 4 %. |
Temperature: 25 - 70 °C Cleaning time: 2 - 15 min |
| EC 95 Polish & Soil Remover |
10 | Yes | Jewellery and watch parts made of alkali-resistant materials | Precious and non-ferrous metals and their alloys, stainless steel, costume jewellery, gemstones, hard stones Not suitable for aluminium, zinc, light metal alloys and soft stones! |
Particles, fats/greases, oils, skin residues, sweat, grinding, polishing and lapping residues, tenacious machining residues Precious and non-ferrous metals are brightened. |
2 % = 20 ml EC 95 + 980 ml water In case of strong soiling, increase the dosage to 4 %. |
Temperature: 25 - 75 °C Cleaning time: 2 - 5 min |
| ELMA RED 1:9 Water-based Concentrate, Watch Movement Parts |
10 | No | For aqueous cleaning of disassembled watches, clocks, watch movement parts and metallic precision parts in watch cleaning machines. | Precious and nonferrous metals and their alloys, stainless steel Not suitable for aluminium, zinc and light metal alloys! |
Resinous oils Brass and gold alloys are brightened. |
10 % = 100 ml RED 1:9 + 900 ml water |
Temperature: room temperature Cleaning time: 3 - 10 min |
