33kHz 4.5L Benchtop Ultrasonic Cleaner | 150W Adjustable Power Sonicator Bath with Sweep, Pulse & Degas for Glassware & Metal Parts
$210.00 piece
Engineered with 3x33kHz transducers and 150W adjustable power, this 4.5L benchtop ultrasonic cleaner provides powerful cavitation for liquid emulsification, degassing, and thorough cleaning of laboratory glassware, cuvettes, and small metal parts. Features digital timing, RT–80°C heating, Sweep, and Pulse modes.
| Quantity | Price | Discount |
|---|---|---|
| 2-20 | $199.50 piece | 5% |
| 21-100 | $189.00 piece | 10% |
| 101+ | $178.50 piece | 15% |
Shipping & Delivery
-
Express Air Delivery
Door-to-door with tracking
7-15 Business Days
Calculated at checkout
-
Standard Ocean Freight
Best for bulk & heavy cargo
25-35 Business Days
Calculated at checkout
-
Warranty 1 year
-
Free 30-Day returns
Specification
Overview
| Model | GL0304-33 |
|---|---|
| Brand | Granbo |
| Manufacturer | Granbo Technology Industrial Shenzhen Co., Ltd. |
| Origin | China |
| Capacity | 4.5L |
| Frequency | 33kHz |
| Power | 0–150W |
| Tank Material | SUS304 Stainless Steel |
| Housing Material | SUS304 Stainless Steel |
| Function | Degassing, Digital Control, Heating, Noise Reduction, Power Adjustable, Pulse, Semiwave, Sweep, Timer |
| Heater | RT~80°C |
| Heating Power | 450W |
| Timer | 1-9999s |
| Tank Size(mm) | 300 x 150 x 100 |
| Unit Size(mm) | 325 x 175 x 290 |
| Voltage | 100V-120V ~ 60Hz / 220V-240V ~ 50Hz |
| Plug Type | AU Plug, EU Plug, Other Plugs, UK Plug, US Plug |
| Warranty | 1 Year |
| Customization | 485 Port, Frequency, PLC System, Tanks Numbers |
| Certificates | CE, FCC, ISO 9001, RoHS |
| Applications | Cuvettes, Dental Instruments, Emulsification, Laboratory Beakers, Metal Fittings, Optical Components, Pipettes, Sample Homogenization, Sample Vials |
Packaging
| Chargeable Weight | 7.3 kg |
|---|---|
| Package Dimensions | 41 × 25.5 × 35 cm |
Description
33kHz Mid-Frequency Cavitation Dynamics & 4.5L Shallow-Wide Tank Versatility
33kHz Acoustic Advantage & Multifunctional Performance
Operating at 33kHz, this unit bridges the gap between intense 28kHz industrial washing and gentle 40kHz fine cleaning:
- High Cavitation Impact: The 33kHz mid-frequency produces large cavitation bubbles that collapse with powerful localized pressure. It effectively strips stubborn oil films, polishing paste, resin burrs, and particulate contamination from durable metal fittings and hard plastic parts.
- Fluid Processing Efficiency: Provides high acoustic shear forces needed for rapid liquid emulsification, particle disruption, and fluid homogenization.
- Advanced Operating Modes:
- Degas Function: Rapidly removes entrapped air and dissolved gas from fluids, essential for maximum cavitation efficiency.
- Pulse Function: Generates periodic high-energy sonic blasts to dislodge baked-on residues.
- Sweep Function: Continuously alternates frequencies (±1kHz) to eliminate standing waves and prevent localized hotspot erosion.
4.5-Liter Wide-Aspect Basin & Optimal Item Suitability
Featuring tank dimensions of 30 x 15 x 10 cm, the wide and shallow geometry provides a spacious horizontal layout:
- Multiple Container Bathing: Perfectly accommodates rows of glass cuvettes, small sample vials, and glass beakers (ranging from 5 mL up to 400 mL) for indirect fluid sonication.
- Elongated Tools & Hardwares: The 30 cm length easily holds long narrow items such as glass pipettes, dental instruments, optical components, and intricate metal fittings inside the protective wire mesh basket.
- Thermal & Temporal Precision: Built-in heating adjusts from room temperature up to 80°C alongside a digital timer (1–9999 seconds) for consistent, repeatable processing cycles.
Control Panel Overview
Control Button Guide
Sweep Frequency Technology Overview
Pulse Mode Overview
Granbo PCB vs. Standard Ultrasonic Cleaner PCB
Multi-Layer Noise Reduction Design
Box Contents:
- 1 x Professional Ultrasonic Cleaner
- 1 x Durable Mesh Cleaning Basket
- One cover, one power cord, one manual warranty card certificate of conformity.
Packing type:
- One unit filled with thick foam, then standard export corrugated carton or wooden box.
Real Customer Feedback
Support & FAQ
Frequency determines cavitation bubble size, impact force, and penetration depth. Lower frequencies produce violent impact for heavy dirt, while higher frequencies provide dense, gentle cleaning for sub-micron microstructures:
• 28kHz: Heavy oil, scale, rust, polishing wax, cutting dust, and thick contaminants (>10μm) on heavy metal/resin parts.
• 40kHz: Universal choice for standard labware, stainless steel, glass, and general maintenance (>10μm particles).
• 68kHz / 80kHz: Fine cleaning for PCBs, watch components, optics, medical instruments, and micro-grooves (5–10μm particles).
• 120kHz: Precision cleaning for micro-blind holes (<0.1mm), semiconductors, ICs, optical lenses, and MEMS (1–5μm particles).
• 200kHz: Ultra-precision cleaning for silicon wafers, MEMS, thin films, and sub-micron / nano-scale contamination (<1μm).
Based on Granbo multi-frequency switchable configurations (Single/Dual/Triple/Quad), we recommend:
| Process | Recommended Frequency | Application Context |
|---|---|---|
| Dispersion | 17-28kHz / 40kHz / 120kHz | 17-28kHz for coarse solid chunks; 40kHz for powders; 120kHz for micro/nano suspensions. |
| Emulsification | 28kHz / 40kHz | 28kHz generates stronger shear force for heavy liquid blending. |
| Extraction | 40kHz / 120kHz | 120kHz is standard for intracellular substance extraction and cell disruption. |
| Mixing/Catalysis | 40kHz / 120kHz | 40kHz for routine mixing; 120kHz for micro-particle homogenization. |
| Synthesis | 80kHz / 120kHz | Prevents molecular degradation during material synthesis. |
| Environmental | 20kHz | High-power sonication for sludge treatment, sewage, and algae disruption. |
To resist cavitation erosion, Granbo customizes tank thickness and welding based on operating frequency:
| Frequency Range | Inner Tank (SUS304) | Outer Shell | Common Tank Capacities & Process |
|---|---|---|---|
| 28kHz - 200kHz | 1.5 mm Thickness | SUS304 (1.0 mm) | 3–10L, 14–22L, 30–58L, 61–135L. Industrial precision stamping & TIG welding. |
| 25kHz | 2.0 mm Thickness | SUS201 (1.0 mm) | Thickened tank; Manual oxy-acetylene heavy welding. |
| 17kHz & 20kHz | 3.0 mm Thickness | SUS201 (1.0 mm) | Ultra-thickened tank; Manual oxy-acetylene heavy welding. |
*Material Safety Tip: Soft metals (aluminum, brass, gold) and delicate glass/ceramics may scratch or fracture at 28kHz. We recommend 40kHz to 80kHz or pre-testing for delicate substrates.
When a workpiece has both stubborn contaminants and sub-micron precision requirements, use a multi-stage approach:
- Stage 1 (Pre-cleaning / 28kHz or 40kHz): Strips heavy grease, rust, polishing paste, scale, or coarse metal particles.
- Stage 2 (Fine Cleaning / 68kHz or 80kHz): Removes fine particles (5–10μm) from blind holes, threads, and complex internal geometry.
- Stage 3 (Ultra-Precision Rinse / 120kHz or 200kHz): Eliminates sub-micron (<1μm) residues without damaging fragile surfaces or thin films.
- Sweep Mode: Automatically sweeps ±1kHz around the center frequency to eliminate standing waves, ensuring uniform cavitation across the bath.
- Degas Mode: Uses pulsed ultrasound intervals (e.g., 5s on / 5s off) to purge dissolved air/gas from liquids—crucial for HPLC sample prep and max cavitation efficiency.
- Pulse Mode: Rapidly cycles power from 100% to 0% to produce a "blasting" impact that removes tough or baked-on residues.
Granbo units utilize Full-Bridge Separately Excited PCB Driver Boards rather than cheap self-excited circuits:
- Visualized Real-time Data: Displays live Power, Frequency, and Current for strict laboratory protocol logging.
- High Power Density: Guarantees a standard ≥ 0.3W/cm² for thorough cleaning. Power Density = Ultrasonic Power (W) / Radiating Area (cm²)
- Low Noise Operation: While 28kHz operation naturally produces more audible mechanical noise, Granbo's multi-layer noise-reduction design enables high-frequency units (≥68kHz) to operate at noise levels below 80dB.
Ultrasonic frequency determines sound wavelength and cavitation bubble collapse intensity:
- 20kHz (λ ≈ 72.5mm): Large bubbles, high collapse force. Best for heavy rust, sludge, and thick scale.
- 40kHz (λ ≈ 36.2mm): Medium bubbles. Ideal balance between cleaning power and component safety.
- 120kHz (λ ≈ 12.0mm): Micro bubbles. High penetration depth for sub-micron cracks and fragile silicon/semiconductor parts.
Beaker Size Matching:
• Beaker ≤ 500mL → 3.2L to 6.5L Tank.
• Beaker ≥ 800mL → 10L to 30L Tank (10L is the most popular size for general lab applications).
Temperature Management:
Ultrasonic activity inherently raises liquid temperature. Although Granbo heating goes up to 80°C, cavitation effectiveness drops significantly above 72°C–80°C due to increased vapor pressure. For temperature-sensitive or low-temp processes, use cooling coils or ice packs in the bath.
Standard production lead times for out-of-stock or customized Granbo models:
- 28kHz - 200kHz Models (Single, Dual, Triple, Quad Frequency): 3 - 5 business days for shipping.
- Ultra-Low Frequency (17kHz, 20kHz, 25kHz): 14 - 20 business days for shipping.
*Note: Customizations like RS-485 communication or PLC integration may slightly adjust delivery timelines. Contact us for precise scheduling.
More Models & Specifications
Click a model name to view its corresponding product page and detailed specifications.
33kHz Series
| Model | Transducers
(PCS) |
Capacity
(L) |
Tank Size
(LxWxH mm) |
Unit Size
(LxWxH mm) |
Frequency
(kHz) |
Ultrasonic Power
(W) |
Heating Power
(W) |
Temp.
(C) |
Timer
(S) |
| GL0203-33 | 2 | 3.2 | 240x135x100 | 265x165x290 | 33 | 0-100 | 300 | 20-80 | 1-9999 |
| GL0205-33 | 2 | 4.8 | 240x135x150 | 265x165x340 | 33 | 0-100 | 300 | 20-80 | 1-9999 |
| GL0304-33 | 3 | 4.5 | 300x150x100 | 325x175x290 | 33 | 0-150 | 450 | 20-80 | 1-9999 |
| GL0306-33 | 3 | 6.5 | 300x150x150 | 325x175x340 | 33 | 0-150 | 450 | 20-80 | 1-9999 |
| GL0610-33 | 6 | 10 | 300x240x150 | 325x265x340 | 33 | 0-300 | 600 | 20-80 | 1-9999 |
| GL0614-33 | 6 | 14 | 300x240x200 | 325x265x390 | 33 | 0-300 | 600 | 20-80 | 1-9999 |
| GL0815-33 | 8 | 15 | 330x300x150 | 355x325x340 | 33 | 0-400 | 1000 | 20-80 | 1-9999 |
| GL0819-33 | 8 | 19 | 330x300x200 | 355x325x390 | 33 | 0-400 | 1000 | 20-80 | 1-9999 |
| GL1422-33 | 14 | 22 | 500x300x150 | 530x330x345 | 33 | 0-700 | 1000 | 20-80 | 1-9999 |
| GL1430-33 | 14 | 30 | 500x300x200 | 530x330x395 | 33 | 0-700 | 1000 | 20-80 | 1-9999 |
4.5L Capacity
| Model | Transducers (PCS) |
Capacity (L) |
Tank Size (L×W×H mm) |
Unit Size (L×W×H mm) |
Frequency (kHz) |
Ultrasonic Power (W) |
Heating Power (W) |
Temp. (°C) |
Timer (S) |
|---|---|---|---|---|---|---|---|---|---|
| GNLH0304-17 | 3 | 4.5 | 300×150×100 | 400×210×220 | 17 | 0–180 | 450 | 20–80 | 1–9999 |
| GNLH0304-20 | 3 | 4.5 | 300×150×100 | 400×210×220 | 20 | 0–300 | 450 | 20–80 | 1–9999 |
| GNL0404-25 | 4 | 4.5 | 300×150×100 | 400×210×220 | 25 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0304-28 | 3 | 4.5 | 300×150×100 | 325×175×290 | 28 | 0–150 | 450 | 20–80 | 1–9999 |
| GL0304-33 | 3 | 4.5 | 300×150×100 | 325×175×290 | 33 | 0–150 | 450 | 20–80 | 1–9999 |
| GL0304-40 | 3 | 4.5 | 300×150×100 | 325×175×280 | 40 | 0–150 | 450 | 20–80 | 1–9999 |
| GL0404-40 | 4 | 4.5 | 300×150×100 | 325×175×280 | 40 | 0–200 | 450 | 20–80 | 1–9999 |
| GLS0804-50 | 8 | 4.5 | 300×150×100 | 325×175×280 | 50 | 0–240 | 450 | 20–80 | 1–9999 |
| GLS0804-53 | 8 | 4.5 | 300×150×100 | 325×175×280 | 53 | 0–280 | 450 | 20–80 | 1–9999 |
| GL0404-68 | 4 | 4.5 | 300×150×100 | 325×175×290 | 68 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-80 | 4 | 4.5 | 300×150×100 | 325×175×280 | 80 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-120 | 4 | 4.5 | 300×150×100 | 325×175×280 | 120 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-130 | 4 | 4.5 | 300×150×100 | 325×175×280 | 130 | 0–240 | 450 | 20–80 | 1–9999 |
| GLS0804-200 | 8 | 4.5 | 300×150×100 | 325×175×280 | 200 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0304-2840 | 3 | 4.5 | 300×150×100 | 325×175×290 | 28/40 | 0–150 | 450 | 20–80 | 1–9999 |
| GL0404-4068 | 4 | 4.5 | 300×150×100 | 325×175×290 | 40/68 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-4080 | 4 | 4.5 | 300×150×100 | 325×175×280 | 40/80 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-40120 | 4 | 4.5 | 300×150×100 | 325×175×280 | 40/120 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-80120 | 4 | 4.5 | 300×150×100 | 325×175×280 | 80/120 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-4080100 | 4 | 4.5 | 300×150×100 | 325×175×280 | 40/80/100 | 0–200 | 450 | 20–80 | 1–9999 |
| GL0404-4080120 | 4 | 4.5 | 300×150×100 | 325×175×280 | 40/80/120 | 0–200 | 450 | 20–80 | 1–9999 |
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