Granbo 4.8L Multi-Frequency Ultrasonic Cleaner 28/33/40KHz
Granbo 4.8L Multi-Frequency Ultrasonic Cleaner 28/33/40KHz
Granbo 4.8L Multi-Frequency Ultrasonic Cleaning Machine | 28/33/40KHz | Quiet Operation
Meet the Granbosonic GL0205 — a professional-grade, 4.8-litre ultrasonic cleaner engineered for labs, clinics, jewellers, and workshops that demand thorough, consistent cleaning with minimal noise. Three selectable ultrasonic frequencies (28, 33, and 40 kHz), a sound-insulated housing, and a corrosion-resistant stainless steel tank make this machine a true workhorse for both delicate instruments and heavy-duty components.
Made in Mainland China.
Why Choose the Granbosonic GL0205?
- Three Switchable Frequencies (28 / 33 / 40 kHz) — Choose 28 kHz for robust parts, 33 kHz for general-purpose use, or 40 kHz for delicate items like jewellery, optical lenses, and circuit boards. ±1 kHz sweep frequency ensures even cavitation across the entire tank.
- Whisper-Quiet Mute Design — The unit is wrapped in sound-insulation cotton, dramatically reducing operating noise — ideal for dental surgeries, optical labs, university labs, and shared workspaces.
- 4.8L Stainless Steel Tank (240 × 135 × 150 mm) — Corrosion-resistant construction handles a wide range of cleaning solutions. Large enough for professional batch cleaning runs.
- Pulse Mode — Activates alternating high-intensity bursts for extra cleaning power on stubborn residue, without damaging sensitive parts.
- 300W Digital Heating System — Built-in heater with precise temperature control ensures optimal cleaning solution performance. Typical steam-cycle duration: 10–15 minutes.
- 100W Ultrasonic Power — Efficient transducers deliver consistent cavitation energy throughout every cycle.
- Universal Voltage (110V / 220V) — Ready to use worldwide straight out of the box.
- RoHS & CE Certified — Meets international safety and environmental standards.
- Frequency Customisation Supported — Can be tailored to specific industrial or research frequency requirements on request.
Wide Range of Applications
- 🔬 Lab & Research — Glassware, pipettes, micro-instruments
- 💎 Jewellery & Watches — Rings, chains, watch movements, bracelets
- 🦷 Dental & Medical Tools — Handpieces, mirrors, scalers, forceps
- ⚙️ Auto & Industrial Parts — Carburettors, injectors, gears, bearings
- 🔌 Electronics — PCBs, connectors, precision sensors
- 👓 Optics — Lenses, frames, microscope components
Full Specifications
| Model | GL0205 |
| Tank Capacity | 4.8 L |
| Tank Dimensions | 240 × 135 × 150 mm |
| Unit Dimensions | 265 × 165 × 330 mm |
| Ultrasonic Frequencies | 28 / 33 / 40 kHz (±1 kHz sweep) |
| Ultrasonic Power | 100W |
| Heating Power | 300W |
| Voltage | 110V / 220V |
| Pulse Mode | Yes |
| Mute Design | Sound insulation cotton |
| Steam Duration | 10–15 minutes |
| Certifications | RoHS, CE |
| Country of Origin | Mainland China |
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Learn more: EPA registered disinfectants
Frequently Asked Questions
Q: What is the difference between the 28 kHz, 33 kHz, and 40 kHz frequency settings on this ultrasonic cleaner?
A: Each frequency produces a different cavitation bubble size. The 28 kHz setting generates larger, more aggressive bubbles suited to robust metal parts, auto components, and heavily soiled items. 33 kHz is a versatile mid-range setting for general workshop and lab use. 40 kHz produces finer, gentler bubbles ideal for delicate items such as jewellery, optical lenses, watch movements, and printed circuit boards. Matching the frequency to the item type ensures thorough cleaning without surface damage.
Q: How quiet is the mute design in practice?
A: The GL0205 is lined internally with sound-insulation cotton, which noticeably dampens the high-frequency vibration noise common in standard ultrasonic cleaners. While no ultrasonic cleaner is completely silent, this model is well suited to noise-sensitive environments such as dental surgeries, optical labs, and shared office spaces.
Q: Is this cleaner compatible with standard cleaning solutions and tap water?
A: Yes. The stainless steel tank is compatible with tap water, distilled water, and most commercially available ultrasonic cleaning concentrates. For best results, use a purpose-formulated cleaning solution appropriate for the items being cleaned (e.g. jewellery cleaner, electronics flux remover, or general degreaser). Always follow the solution manufacturer's dilution guidelines.
Q: Can I use this machine on 110V power supplies (e.g. in the USA)?
A: Absolutely. The Granbosonic GL0205 supports both 110V and 220V input voltages, making it universally compatible for use in North America, Europe, Australia, and most other regions without requiring a separate voltage converter.
Q: What does Pulse Mode do?
A: Pulse Mode alternates the ultrasonic power output in rapid bursts rather than running continuously. This creates turbulence within the tank that can dislodge stubborn contaminants more effectively than standard continuous mode, while still being gentle enough for precision components.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.