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Metra SJ-A5 Ultrasonic Cleaner 50/55/60 kHz 500 ml 316 Stainless Steel
Tri-frequency ultrasonic waves at 50/55/60 kHz clean jewellery, eyewear and dentures in a 500 ml 316 stainless steel tank with five preset timers up to 600 seconds
- ColorWhite
- FeaturesUltrasonic Cleaner, Powerline, User Manual, Plastic Basket,c
- Cleans with tap water only using 50/55/60 kHz triple-frequency waves
- 316 food-grade stainless steel tank safer for dentures and baby items
- Five preset cycles from 180 to 600 seconds adapt to fragile pieces
- 500 ml capacity handles larger items like watches and eyewear
- Quiet 45 dB operation keeps cleaning sessions peaceful
Target Users
The Metra SJ-A5 is a benchtop ultrasonic cleaner designed for jewellery, eyeglasses, non-digital watches, dentures and small accessories. It uses only tap water to deliver 360-degree cleaning without harsh chemicals, making it suitable for home users who want a simple way to maintain delicate items. The 316 food-grade stainless steel tank adds safety for objects that contact skin or mouth. It is not for buyers who need industrial throughput or heated cleaning cycles.
Tri-Frequency Operation
The single specification that decides fit is the 50/55/60 kHz triple-frequency output, which penetrates tiny crevices while protecting delicate patina on metal surfaces. Five preset timers — 180, 300, 420, 580 and 600 seconds — let you match cycle length to the item, with the longest mode recommended for fragile pieces such as pearls. Without this multi-frequency range and timed flexibility, the cleaner cannot address both stubborn grime and sensitive materials in one device.
Included Accessories
A plastic basket holds small parts securely during agitation, and a cloth is supplied for drying afterwards. The user manual and power lead complete the bundle so the unit runs straight from the mains. No cleaning solution is included; the machine works with tap water alone, though a moderate amount of jewellery cleaner can be added for tough stains. Buyers who expect a starter fluid or specialised inserts will need to source them separately.
Highlights
- Cleans with tap water only using 50/55/60 kHz triple-frequency waves
- 316 food-grade stainless steel tank safer for dentures and baby items
- Five preset cycles from 180 to 600 seconds adapt to fragile pieces
- 500 ml capacity handles larger items like watches and eyewear
- Quiet 45 dB operation keeps cleaning sessions peaceful
Specifications
| Brand | Metra |
|---|---|
| Color | White |
| Features | Ultrasonic Cleaner, Powerline, User Manual, Plastic Basket,cloth, Blue, false |
| Model | SJ-A5 |
Questions about this item
How does the triple-frequency 50/55/60 kHz range affect everyday cleaning?
The three frequencies work together to reach into tiny crevices across different types of grime, giving a more thorough 360° clean with just tap water than a single frequency could.
What does the 45 dB operating level mean in a quiet room?
At 45 dB the unit runs at roughly library-quiet volume, so it won't disturb conversation or sleep while a cycle is running.
Why is the 316 stainless steel tank specified instead of 304?
316 grade is food-safe and more corrosion-resistant, making it suitable for items that go in the mouth such as dentures, baby bottles and makeup brushes.
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