Ottochem CR Blue is a mildly alkaline, ammonia-free ultrasonic cleaning concentrate formulated for the jewelry trade. It quickly removes buffing and polishing compounds — Tripoli, rouge, and white diamond — from gold, silver, platinum, brass, copper, and rhodium without harsh fumes. Its blend of sequestrants, surfactants, and emulsifiers delivers strong cleaning performance while remaining economical and biodegradable. Available in 1 Quart, 1 Gallon, and 5 Gallon sizes to suit any shop volume.
Features
- Biodegradable, non-ammoniated concentrate formulated for tough cleaning jobs
- Fast removal of buffing and polishing compounds (Tripoli, rouge, white diamond)
- Safe for gold, silver, platinum, brass, copper, and rhodium
- Optimized for heated ultrasonics; can be premixed or mixed directly in-tank
- Economical 5–10% use concentration
- Mildly alkaline formula — no harsh fumes
Specifications
| Formula Type |
Mildly alkaline concentrate |
| pH |
11–12 |
| Ammonia |
Ammonia-free |
| Biodegradable |
Yes |
| Use Concentration |
5–10% by volume (10:1 to 20:1 water to concentrate) |
| Ultrasonic Temperature |
120–140 °F (49–60 °C) |
| Ultrasonic Power |
50 watts per gallon recommended minimum |
| Compatible Metals |
Gold, silver, platinum, brass, copper, rhodium |
Available Options
| Part # |
Size |
| 123.600 |
1 Quart |
| 123.601 |
1 Gallon |
| 123.602 |
5 Gallon |
Directions & Mixing
| Standard Use Ratio |
5–10% by volume (approx. 20:1 to 10:1 water to concentrate) |
| Strong Mix |
Up to 1:8 (1 part concentrate to 8 parts water) |
| Ultrasonic Temperature |
120–140 °F (49–60 °C) |
| Ultrasonic Power |
50 watts per gallon recommended minimum |
| Make-Up |
Add concentrate to water in the tank or premix; stir and heat to operating temperature |
| Rinse |
Always follow with a clean water rinse |
| Bath Maintenance |
Maintain concentration by periodic additions as soil load increases |
Recommended Dilutions
| Ratio |
Application |
| 20:1 (5%) |
General purpose cleaning |
| 10:1 (10%) |
Polishing & buffing compound removal |
Applications
- Post-buff cleaning prior to finishing or stone setting
- Pre-cleaning prior to plating
- Shop maintenance cleaning of tools and fixtures
Notes
-
Caution: Mildly alkaline (pH 11–12). Avoid prolonged skin and eye contact; wash hands after handling.
- Exercise caution with porous or chemically sensitive stones; test before use when in doubt.
- Use appropriate PPE and follow equipment manufacturer guidelines.
California Prop 65 Warning: