Kendal 9L Digital Ultrasonic Cleaner
#1 in 3 to 10 LFull review
A powerful 9 L tank for gun parts, carburetors and instruments, with a big heater and a long timer.
Amazon $199$199
The Kendal 9L Digital Ultrasonic Cleaner is the better ultrasonic cleaner overall, rated 3.7 to 3.3. The Kendal 9L Digital Ultrasonic Cleaner leads on ultrasonic power. The SupRUCCI ST-6L Sweep Ultrasonic Cleaner wins on features. The SupRUCCI ST-6L Sweep Ultrasonic Cleaner costs $50.21 less ($148.79 vs $199).
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.
SupRUCCI ST-6L Sweep Ultrasonic Cleaner
#5 in 3 to 10 LFull review
A 6 L parts tank with sweep and adjustable power, aimed at carburetors, chains and gun parts.
Amazon $148.79$148.79
Which should you buy?
- Choose the Kendal 9L Digital Ultrasonic Cleaner for ultrasonic power (50 W per liter (450 W, 9 L) vs 30 W per liter (180 W, 6 L)).
- Choose the SupRUCCI ST-6L Sweep Ultrasonic Cleaner for features (dual or sweep frequency, gentle or adjustable power, drain valve vs basket included, timer of 60 min or more).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 3 to 10 L ultrasonic cleaner; a clear win is highlighted. How we rank explains each one.
| Factor weight | Kendal 9L Digital Ultrasonic Cleaner | SupRUCCI ST-6L Sweep Ultrasonic Cleaner |
|---|---|---|
| Overall rating | 3.7/5 | 3.3/5 |
| Value 30% | 70 $22.11 per liter ($199, 9 L) | 67 $24.80 per liter ($148.79, 6 L) |
| Ultrasonic power 25% | 100 50 W per liter (450 W, 9 L) | 50 30 W per liter (180 W, 6 L) |
| Heater 10% | 100 50 W per liter (450 W heater) | 50 heater power not published (neutral score used) |
| Features 25% | 30 basket included, timer of 60 min or more | 50 dual or sweep frequency, gentle or adjustable power, drain valve |
| Warranty 10% | 0 1-year warranty | 0 warranty not published, scored as none |
Specifications
| Kendal 9L Digital Ultrasonic Cleaner | SupRUCCI ST-6L Sweep Ultrasonic Cleaner | |
|---|---|---|
| Tank | ||
| Capacity | 9 L | 6 L |
| Inner tank size | 11.8 x 9.5 x 6.0 in | - |
| Drain | - | Yes |
| Basket included | Yes | - |
| Price per liter | $22.11/L | $24.80/L |
| Ultrasonics and heat | ||
| Ultrasonic power | 450 W | 180 W |
| Ultrasonic power per liter | 50 W/L | 30 W/L |
| Frequency | - | 40 kHz sweep |
| Heater power | 450 W | - |
| Heater power per liter | 50 W/L | - |
| Temperature range | 20-80 °C (68-176 °F) | - |
| Controls | ||
| Controls | Digital | Digital |
| Longest timer | 99 min | - |
| Gentle or adjustable power | - | Yes |
| Build | ||
| Warranty | 1 year | - |