Finding a safe and effective ultrasonic cleaning solution for clocks and watches helps protect delicate components while removing oils, dirt, and grime. The following selections are designed for hobbyists and professionals alike, offering biodegradable formulas, specialty watch and clock cleaners, and concentrates suitable for ultrasonic machines. Each product is evaluated for compatibility with common metals and finishes used in clocks and watches, as well as ease of use and value.
| Product | Brand | Type |
|---|---|---|
| iSonic CSBC001 Ultrasonic Brass Cleaning Solution | iSonic | Brass cleaning solution, concentrate |
| Ultrasonic Ammoniated Watch Cleaning Solution (#111) | Unknown | Ammoniated solution for watches |
| iSonic CSGJ01-8OZx1 Cleaning Solution Concentrate | iSonic | Jewelry/eye wear concentrate |
| Tillbrook Ultrasonic Cleaner Solution | Tillbrook | Carburetor/metal parts concentrate |
| Elmasonic Elma RED 1:9 Cleaning Concentrate | Elmasonic | Watch/clock cleaning concentrate |
iSonic CSBC001 Ultrasonic Brass Cleaning Solution

The CSBC001 is a biodegradable high-density polyethylene (HDPE) container formula designed for ultrasonic cleaning of brass components, including clock hardware. It is a concentrated solution suitable for thorough grime and oxidation removal on brass parts commonly found in antique and modern timepieces. Users should follow dilution guidelines to protect delicate finishes and ensure compatibility with other metals in assemblies.
Key considerations: compatibility with brass-and-metal assemblies, biodegradability for eco-conscious users, and clear labeling that helps prevent misuse in mixed-metal clock parts. The solution is optimized for brass-focused cleaning in ultrasonic baths, making it a targeted option for brass components within clocks and watches.
Ultrasonic Ammoniated Watch Cleaning Solution

This ammoniated watch cleaning solution is formulated for use with ultrasonic rinses and cleaning machines dedicated to watches. The ammoniated composition helps break down oils, fingerprints, and grime from watch dials and bracelets while aiming to protect delicate engravings and metal finishes when used according to manufacturer instructions. This product is described as compatible with general ultrasonic watch cleaning workflows and related rinses.
Key considerations: suitability for watches and precision parts, compatibility with standard ultrasonic equipment, and guidance for use with various rinses to avoid residue or surface damage. This option is positioned for users who require a dedicated solution for timepiece maintenance beyond general metal parts cleaning.
iSonic CSGJ01-8OZx1 Cleaning Solution Concentrate

This ultrasonics jewelry/eye wear cleaning concentrate is designed to remove smudges, lotions, fingerprints, and other residues from jewelry, watches, and eye wear. The concentrate format allows for tailored dilution to balance cleaning power with material safety. It is particularly helpful for restoring sparkle to diamonds, metals, and classic watch faces without aggressive solvents that might damage delicate stones or coatings.
Key considerations: versatility for jewelry and eyewear alongside clock components, safe formulation for mixed-metal jewelry, and dilution control to minimize risk of abrasion on sensitive finishes. It provides a general-purpose option within ultrasonic cleaning routines for clocks with ornamental elements.
Tillbrook Ultrasonic Cleaner Solution

Tillbrook’s concentrate is designed for heavy-duty cleaning of carburetors and automotive parts, but it is also used by clock enthusiasts to tackle tough contaminants on metal components. The formula makes 8 gallons when diluted properly and is engineered to remove grease, varnish, and built-up grime from carburetors and similar metal parts. It emphasizes safe metal compatibility and artifact restoration potential in heavier cleaning tasks.
Key considerations: large-volume concentrate for value, suitability for metal parts beyond clocks, and dilution to achieve the correct strength for clock components. While strong, it requires careful use on fragile clock parts to avoid damage to delicate finishes or inscriptions.
Elmasonic Elma RED 1:9 Cleaning Concentrate

Elmasonic’s Elma RED concentrate is purpose-built for watches and clocks, offering a 1:9 dilution ratio. The concentrate is designed to remove dirt and oils from dismantled timepieces, with flexibility for use in various ultrasonic cleaning units. It is marketed as a versatile solution that can be adapted to different cleaning cycles and instrument configurations, providing efficient dirt removal while aiming to preserve delicate surfaces.
Key considerations: clock- and watch-specific cleaning focus, adjustable dilution for different cleaning cycles, and compatibility with ultrasonic units used in horology maintenance. This concentrate serves as a balanced option for precision cleaning without excessive aggressiveness on finishes.
Buying Guide: Key Purchase Considerations And Comparisons
- Intended use: Choose a solution tailored to clocks and watches if your primary goal is timepiece restoration and maintenance. For mixed metal parts or heavier grime, a stronger concentrate with clear dilution guidance may be appropriate.
- Material compatibility: Consider the metals and finishes on your clock—brass, stainless steel, brass alloys, plated surfaces, and delicate enamel or dial coatings require careful formulation to avoid damage.
- Concentrates vs. ready-to-use: Concentrates offer value and flexibility, but they require accurate dilution to avoid residue or corrosion. Ready-to-use formulas simplify usage but may be less economical for frequent cleaning.
- Biodegradability and safety: Biodegradable formulations are preferable for eco-conscious users and reduce environmental impact, especially in hobbyist settings.
- Ultrasonic compatibility: Confirm that the chosen solution works with your ultrasonic cleaner’s frequency and tank material. Some cleaners are optimized for specific parts (e.g., jewelry, watch components, or brass hardware).
- Residue and rinsing: Some solutions require specific rinsing steps to prevent film or residue on watch faces and dial openings. Follow manufacturer guidelines for best results.
- Storage and shelf life: Keep concentrates sealed and labeled, away from heat and direct sunlight. Check expiration guidance for optimal performance.
- Safety: Use gloves and eye protection when handling concentrates. Ensure proper ventilation when mixing concentrated formulas.
In sum, the five products above present a range of options for ultrasonic cleaning of clocks, watches, and related components. Whether you need targeted brass cleaning, ammoniated watch care, jewelry-compatible concentrates, or heavy-duty metal parts removal, there are solutions designed to balance cleaning power with material safety. Always follow dilution instructions and test on a small area before full use to minimize risk to valuable timepieces.