U.S. Solid 3L Dual-Frequency
#2 in 3 to 10 LFull review
The most powerful small tank for its size, with dual frequency and degas, for shop parts and jewelry alike.
Amazon $128.97$128.97
The U.S. Solid 3L Dual-Frequency rates 3.7 among 3 to 10 L ultrasonic cleaners; the Elmasonic P30H rates 3.2 among under 3 L ones. The U.S. Solid 3L Dual-Frequency costs $1,570.03 less ($128.97 vs $1,699).
Prices were last checked November 9, 2026. Product prices and availability are accurate as of that date and are subject to change; the price and availability shown on Amazon or the retailer's site at the time of purchase apply. As an Amazon Associate we earn from qualifying purchases.
Elmasonic P30H
#3 in Under 3 LFull review
A dual-frequency lab and dental bath with every cleaning mode, for work where 80 kHz matters. Its price only makes sense for that kind of work.
Amazon $1,699$1,699
Scores side by side
These two sit in different tank size classes (3 to 10 L and under 3 L), and each is scored against the reference points for its own class, so a rating says how well each does among its own tank size peers. How we rank explains each factor.
| Factor weight | U.S. Solid 3L Dual-Frequency | Elmasonic P30H |
|---|---|---|
| Overall rating | 3.7/5 | 3.2/5 |
| Value 30% | 51 $42.99 per liter ($128.97, 3 L) | 0 $617.82 per liter ($1,699, 2.8 L) |
| Ultrasonic power 25% | 100 66.7 W per liter (200 W, 3 L) | 84 43.6 W per liter (120 W, 2.8 L) |
| Heater 10% | 50 heater power not published (neutral score used) | 100 90.9 W per liter (250 W heater) |
| Features 25% | 70 degas mode, dual or sweep frequency, basket included, timer of 60 min or more | 70 degas mode, dual or sweep frequency, gentle or adjustable power, drain valve |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| U.S. Solid 3L Dual-Frequency | Elmasonic P30H | |
|---|---|---|
| Tank | ||
| Capacity | 3 L | 2.8 L |
| Inner tank size | - | 240 x 137 x 100 mm |
| Drain | - | Yes |
| Basket included | Yes | - |
| Price per liter | $42.99/L | $617.82/L |
| Ultrasonics and heat | ||
| Ultrasonic power | 200 W | 120 W |
| Ultrasonic power per liter | 66.7 W/L | 43.6 W/L |
| Frequency | 28/40 kHz | 37/80 kHz sweep |
| Heater power | - | 250 W |
| Heater power per liter | - | 90.9 W/L |
| Temperature range | Up to 80 °C | - |
| Controls | ||
| Controls | Digital | Digital |
| Longest timer | 99 min | - |
| Degas mode | Yes | Yes |
| Gentle or adjustable power | - | Yes |
| Build | ||
| Weight | - | 7.3 lb |