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
The SupRUCCI ST-6L Sweep Ultrasonic Cleaner is the better ultrasonic cleaner overall, rated 3.3 to 2.9. The SupRUCCI ST-6L Sweep Ultrasonic Cleaner leads on value. The EIWEI CD-E6 6L Dual-Frequency wins on features. The SupRUCCI ST-6L Sweep Ultrasonic Cleaner costs $51.20 less ($148.79 vs $199.99).
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.
EIWEI CD-E6 6L Dual-Frequency
#7 in 3 to 10 LFull review
A 6 L dual-frequency tank with degas and a long timer. Its listing does not say how much ultrasonic power it has.
Amazon $199.99$199.99
Which should you buy?
- Choose the SupRUCCI ST-6L Sweep Ultrasonic Cleaner for value ($24.80 per liter ($148.79, 6 L) vs $33.33 per liter ($199.99, 6 L)).
- Choose the EIWEI CD-E6 6L Dual-Frequency for features (degas mode, dual or sweep frequency, gentle or adjustable power, timer of 60 min or more vs dual or sweep frequency, gentle or adjustable power, drain valve).
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 | SupRUCCI ST-6L Sweep Ultrasonic Cleaner | EIWEI CD-E6 6L Dual-Frequency |
|---|---|---|
| Overall rating | 3.3/5 | 2.9/5 |
| Value 30% | 67 $24.80 per liter ($148.79, 6 L) | 59 $33.33 per liter ($199.99, 6 L) |
| Ultrasonic power 25% | 50 30 W per liter (180 W, 6 L) | 0 ultrasonic power not published, scored as none |
| Heater 10% | 50 heater power not published (neutral score used) | 50 heater power not published (neutral score used) |
| Features 25% | 50 dual or sweep frequency, gentle or adjustable power, drain valve | 70 degas mode, dual or sweep frequency, gentle or adjustable power, timer of 60 min or more |
| Warranty 10% | 0 warranty not published, scored as none | 0 warranty not published, scored as none |
Specifications
| SupRUCCI ST-6L Sweep Ultrasonic Cleaner | EIWEI CD-E6 6L Dual-Frequency | |
|---|---|---|
| Tank | ||
| Capacity | 6 L | 6 L |
| Inner tank size | - | 30 x 15.5 x 15 cm |
| Tank steel | - | SUS304 stainless |
| Drain | Yes | - |
| Price per liter | $24.80/L | $33.33/L |
| Ultrasonics and heat | ||
| Ultrasonic power | 180 W | - |
| Ultrasonic power per liter | 30 W/L | - |
| Frequency | 40 kHz sweep | 28/40 kHz |
| Temperature range | - | Up to 80 °C |
| Controls | ||
| Controls | Digital | Digital |
| Longest timer | - | 99 min |
| Degas mode | - | Yes |
| Gentle or adjustable power | Yes | Yes |