ultrasonic jewelry cleaner

Across these listings, ultrasonic frequencies commonly include 40 kHz, 42 kHz and 48 kHz — in other words, many cleaners operate in the ~40–48 kHz range for deep yet gentle cleaning.

Tank capacities in these listings vary from small 600 ml (20 oz) home tanks up to multi-liter professional tanks, with examples including 600 ml (20 oz), about 2.1–2.5 L options, and a 10 L professional unit.

Timer options range from short preset cycles to fully programmable timers: several models offer preset cycle sets (for example 5 cycles from 90 to 480 seconds), one offers 18 presets from 90 seconds up to 30 minutes, and some professional units allow 0–99 minute timer programming.

Listings commonly describe cleaning jewelry, eyeglasses, watches and dental appliances (dentures, retainers, aligners), plus small household and precision items like coins, razor/shaver heads, toothbrush heads, watch parts and small tools.

Several listings warn against using ultrasonic cleaning on delicate, organic, or porous materials and on certain gemstones. Examples cited include pearls, coral, emeralds and jade. One listing also mentions microfiber and another warns against cleaning circuit boards or electronic components.

Some models add heat to boost cleaning (one unit lists a heat function up to 65°C / 149°F), and others include a degassing mode to remove dissolved gases from water and improve cleaning efficiency.

Many listings specify stainless steel tanks for durability and corrosion resistance, with examples citing SUS 304 or 304 stainless steel construction for the cleaning chamber and tank.