4.5L 25kHz Low-Frequency Sonicator Bath – 200W Variable Power with Degas, Sweep & Pulse
$435.00 piece
Robust 4.5L 25kHz low frequency ultrasonic bath with 0-200W power control, degas & sweep for heavy liquid blending, polishing wax & machine parts degreasing.
| Quantity | Price | Discount |
|---|---|---|
| 2-20 | $413.25 piece | 5% |
| 21-100 | $391.50 piece | 10% |
| 101+ | $369.75 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 | GNL0404-25 |
|---|---|
| Brand | Granbo |
| Manufacturer | Granbo Technology Industrial Shenzhen Co., Ltd. |
| Origin | China |
| Capacity | 4.5L |
| Frequency | 25kHz |
| Power | 0-200W |
| 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 |
| Timer | 1-9999s |
| Tank Size(mm) | 300 x 150 x 100 |
| Unit Size(mm) | 400 x 210 x 220 |
| 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 | Cutting Dust Removal, Degassing, Emulsification, Heavy Liquid Blending, Laboratory Glassware, Machine Parts Degreasing, Polishing Wax, Powder Dispersion, Rust Removal, Sample Homogenization |
Packaging
| Chargeable Weight | 16.36 kg |
|---|---|
| Package Dimensions | 50 × 27 × 28 cm |
Description
The Acoustic Power & Physical Shear of 25kHz Sonication
Operating within the specialized 25kHz low-frequency acoustic spectrum, this sonication bath delivers intense hydraulic impact and acoustic shear stress, making it far more capable of breaking tough physical bonds than standard 40kHz units:
- Macro-Bubble Cavitation Energy: At 25kHz, sound waves form larger cavitation bubbles before they implode. This implosion releases localized fluid micro-jets and high mechanical shear force, rapidly stripping tenacious residues like polishing wax, cutting dust, hardened scale, heavy oil film, and rust.
- Heavy-Welded 2.0mm Stainless Steel Reservoir: Low-frequency cavitation exerts severe physical stress on bath surfaces. To ensure long-term resistance against cavitation erosion, the inner reservoir is crafted from an extra-thickened 2.0mm SUS304 stainless steel tank built with heavy-duty oxy-acetylene welding.
- Superior Energy for Heavy Liquid Blending: The vigorous liquid agitation produced at 25kHz makes this unit a powerful tool for liquid-phase processing—enabling efficient heavy liquid blending, emulsification, powder dispersion, sample homogenization, and thorough degassing.
- Precise Power Modulation: To protect sensitive media while handling tough tasks, the system features a 0–200W variable power control alongside Degas mode and Sweep/Pulse functions to customize cavitation intensity and eliminate standing waves.
Load Alignment & Application Scope for 4.5L Capacity
The 4.5L benchtop tank footprint offers an optimal working volume for precision batch hardware processing and multi-beaker fluid sonication:
- Machined Metallic Components & Hardware:
- Engineered Metal Parts: Stainless steel fittings, machine tools, fuel nozzles, industrial valve bodies, threaded bolts, and alloy castings requiring deep machine parts degreasing, polishing wax removal, or rust removal.
- Hard Synthetics: Sturdy polymer components made of ABS, PVC, PP, and scratch-resistant plastics.
- Indirect Beaker Sonication & Fluid Handling:
- Laboratory Glassware & Sample Vessels: The 4.5L reservoir comfortably accommodates 5mL up to 500mL beakers and sample flasks for indirect powder dispersion, heavy liquid blending, emulsification, and degassing directly inside vessels without cross-contaminating the main bath.
- Substrate Safety Advice:
- Because 25kHz produces intense physical shockwaves, softer alloys (such as aluminum, brass, or gold) and delicate glass containers should be processed at reduced wattage using the 0–200W power control or cushioned via Sweep/Pulse modes.
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:
Granbo Recommended Frequency Matrix:
• 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).
• 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:
Wavelength (λ) = 1,450,000 (mm/s) / Frequency (Hz)
- 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.
25kHz 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) |
| GNL0303-25 | 3 | 3.2 | 240x135x100 | 340x195x320 | 25 | 0-150 | 300 | 20-80 | 1-9999 |
| GNL0305-25 | 3 | 4.8 | 240x135x150 | 340x195x370 | 25 | 0-150 | 300 | 20-80 | 1-9999 |
| GNL0404-25 | 4 | 4.5 | 300x150x100 | 400x210x220 | 25 | 0-200 | 450 | 20-80 | 1-9999 |
| GNL0406-25 | 4 | 6.5 | 300x150x150 | 400x210x370 | 25 | 0-200 | 450 | 20-80 | 1-9999 |
| GNL0810-25 | 8 | 10 | 300x240x150 | 400x300x370 | 25 | 0-400 | 600 | 20-80 | 1-9999 |
| GNL0814-25 | 8 | 14 | 300x240x200 | 400x300x420 | 25 | 0-400 | 600 | 20-80 | 1-9999 |
| GNL1015-25 | 10 | 15 | 330x300x150 | 430x360x370 | 25 | 0-500 | 1000 | 20-80 | 1-9999 |
| GNL1019-25 | 10 | 19 | 330x300x200 | 430x360x420 | 25 | 0-500 | 1000 | 20-80 | 1-9999 |
| GNL1622-25 | 16 | 22 | 500x300x150 | 600x360x380 | 25 | 0-800 | 1000 | 20-80 | 1-9999 |
| GNL1630-25 | 16 | 30 | 500x300x200 | 600x360x430 | 25 | 0-800 | 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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