The Great Wall
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| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | CT-40-V4 |
| Price | Upon Request |
| Empty Load Temperature | −40 °C |
| Cooling Method | Indirect (Glass Flask Immersion) |
| Temperature Display | Digital, Pt100 Sensor |
| Temperature Setting Range | Adjustable Within Operating Range |
| Safety Protections | Delay Start, Overcurrent, Overheat, High-Pressure Cut-off |
| Refrigerant | R404A |
| Cooling Capacity | 300 W at −10 °C, 250 W at −20 °C, 150 W at −30 °C, 50 W at −35 °C |
| Cryobath Dimensions | Ø160 × 250 mm |
| Cold Trap Flask Dimensions | Ø50 × 300 mm (Qty: 3) |
| Flask Material | Borosilicate Glass 3.3 (DIN ISO 3585) |
| Cryobath Material | 06Cr19Ni10 (AISI 304 Stainless Steel) |
| Drain Valve | Integrated |
| Vacuum Port | Ø12 mm Soft Tubing Fitting |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220 V~, 60 Hz |
| Total Power Consumption | 730 W |
| Rated Current | 4.2 A |
| Overall Dimensions (W×D×H) | 350 × 470 × 811 mm |
| Net Weight | 45 kg |
| Additional Functions | Pre-freezing Bath, Low-Temperature Constant-Temperature Bath |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | CT-40x |
| Pricing | Upon Request |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | CT-5000L |
| Pricing | Upon Request |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | CZLL-20 |
| Capacity | 30 L |
| Construction Material | Borosilicate Glass (Reaction Vessel), Stainless Steel (Frame) |
| Operating Pressure Range | Medium Vacuum |
| Ultimate Vacuum | 0.098 MPa (98 kPa absolute) |
| Vessel Volume Class | Medium-Scale |
| Filter Plate Options | Interchangeable Standard Sizes (e.g., Ø100 mm, Ø150 mm, Ø200 mm) |
| Filtration Visibility | Full Visual Process Monitoring Through Glass Body |
| Compliance | Designed for GLP-aligned laboratory workflows |
| Service Support | 1-Year Limited Warranty (excludes glass components), Lifetime Technical Support and Repair Services |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | CZLL-20 |
| Pricing | Available Upon Request |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Vertical Cryogenic Thermostat |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Temperature Uniformity | ±2 °C |
| Bath Opening Diameter | Ø210 mm |
| Bath Volume | 5 L |
| External Dimensions | 630 W × 795 D × 790 H mm |
| Net Weight | 125 kg |
| Circulating Medium | Mixed Refrigerant |
| Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Cooling Capacity | 110 W at −60 °C / 50 W at −80 °C / 20 W at −100 °C |
| Rated Power | 820 W |
| Protection Features | Delayed Start, Overcurrent & Overtemperature Protection |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Bath Material | 304 Stainless Steel |
| Max. Flask Capacity | ≤2000 mL |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1005 |
| Instrument Category | Constant-Temperature Bath |
| Circulation Function | External Circulation |
| Temperature Control | Refrigeration & Heating |
| Bath Volume | 5 L |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1005 |
| Quotation | Upon Request |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 5 L |
| Refrigerant | Mixed Refrigerant System |
| Cooling Capacity | 110 W at −60 °C, 50 W at −80 °C, 20 W at −100 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Rated Power | 820 W |
| Protection Features | Delay Start, Overcurrent & Overtemperature Protection |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Drain Port | 1/2″ NPT |
| Bath Opening Diameter | Ø210 mm |
| Bath Dimensions (Ø×H) | Ø220 × 180 mm |
| Max Flask Capacity | 2000 mL |
| Bath Material | 304 Stainless Steel |
| Overall Dimensions (W×D×H) | 630 × 795 × 790 mm |
| Net Weight | 125 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1010 |
| Price Range | USD 7,000–14,000 |
| Temperature Range | −100 °C to −60 °C |
| Ambient Operating Temperature | 5–25 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Reservoir Capacity | 10 L |
| Reservoir Dimensions | Φ250 mm × 250 mm (H) |
| Opening Diameter | Φ210 mm |
| Cooling Capacity | 160 W at −60 °C / 70 W at −80 °C / 40 W at −100 °C |
| Max. Flask Size Supported | 3000 mL |
| Total Power Consumption | 2050 W |
| Housing Material | Cold-rolled steel with electrostatic powder coating |
| External Dimensions (L×W×H) | 780 × 670 × 1085 mm |
| Net Weight | 150 kg |
| Circulation System | 304 stainless steel + polymer-based corrosion-resistant components |
| Low-Temp Operation Limitation | No circulation below −100 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1020 |
| Price Range | USD 7,000–14,000 |
| Temperature Range | −100 °C to −60 °C |
| Ambient Operating Temperature | 5–25 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Bath Volume | 20 L |
| Bath Dimensions (Ø × H) | 300 mm × 300 mm |
| Opening Diameter | 280 mm |
| Cooling Capacity | 600 W at −60 °C |
| Max Flask Capacity | 5000 mL |
| Total Power Consumption | 3234 W |
| Housing Material | Cold-rolled steel with electrostatic epoxy coating |
| External Dimensions (L×W×H) | 1200 × 810 × 1310 mm |
| Net Weight | 154 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-1030 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal Circulation |
| Temperature Control | Refrigeration & Heating Combined |
| Bath Volume | 30 L |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Refrigeration Capacity | 620 W at −60 °C, 480 W at −80 °C, 200 W at −100 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Max Flask Capacity | 10,000 mL |
| Tank Dimensions (Ø × H) | 400 × 235 mm |
| Opening Diameter | Ø320 mm |
| Cabinet Material | Cold-Rolled Steel with Electrostatic Powder Coating |
| Overall Dimensions (L×W×H) | 1160 × 800 × 1310 mm |
| Net Weight | 180 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-1050 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal Circulation |
| Temperature Control | Refrigeration & Heating |
| Bath Volume | 50 L |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Cooling Capacity | 700 W at −60 °C / 580 W at −80 °C / 420 W at −100 °C |
| Max Flask Capacity | 20 L |
| External Dimensions (L×W×H) | 1340 × 820 × 1310 mm |
| Net Weight | 265 kg |
| Construction | Cold-Rolled Steel with Electrostatic Powder Coating |
| Bath Vessel | 304 Stainless Steel + High-Molecular Corrosion-Resistant Liner |
| Display | Digital LED with Keypad Input |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1210 |
| Price Range | USD 7,000–14,000 |
| Temperature Range | −120 °C to −60 °C |
| Ambient Operating Temperature | 5–25 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Bath Volume | 10 L |
| Bath Dimensions (Ø × H) | 250 mm × 250 mm |
| Opening Diameter | 210 mm |
| Cooling Capacity | 160 W at −60 °C / 70 W at −80 °C / 40 W at −100 °C / 20 W at −120 °C |
| Max Flask Capacity | 3000 mL |
| Total Power Consumption | 2050 W |
| Housing Material | Cold-rolled steel with electrostatic epoxy coating |
| External Dimensions (L×W×H) | 780 × 670 × 1085 mm |
| Net Weight | 154 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (China) |
| Model | DHJF-1210 |
| Pricing | Upon Request |
| Refrigeration Principle | Single-Stage Compressor with Cascade Subcooling |
| Temperature Range | −120 °C to −60 °C |
| Bath Volume | 10 L |
| Temperature Stability | ±2 °C |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Cooling Capacity | 160 W at −60 °C, 70 W at −80 °C, 40 W at −100 °C, 20 W at −120 °C |
| Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Display Resolution | 0.1 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Protection | Delayed Start, Overcurrent, Overtemperature |
| Bath Material | 304 Stainless Steel |
| Dimensions (W×D×H) | 670 × 780 × 1085 mm |
| Net Weight | 154 kg |
| Drain Port | 1/2″ NPT |
| Flask Capacity Support | Up to 3000 mL |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1220 |
| Price Range | USD 7,000–14,000 |
| Temperature Range | −120 °C to −60 °C |
| Ambient Operating Temperature | 5–25 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Bath Volume | 20 L |
| Bath Dimensions (Ø × H) | 300 mm × 300 mm |
| Opening Diameter | 280 mm |
| Cooling Capacity | 600 W at −60 °C, 480 W at −80 °C, 180 W at −100 °C, 40 W at −120 °C |
| Max Flask Capacity | 5000 mL |
| Total Power Consumption | 3234 W |
| Housing Material | Cold-rolled steel with electrostatic epoxy coating |
| External Dimensions (L×W×H) | 1200 mm × 810 mm × 1310 mm |
| Net Weight | 190 kg |
| Circulation System | Stainless steel 304 + polymer-based corrosion-resistant components |
| Low-Temperature Operation Limitation | No active circulation below −100 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1220 |
| Temperature Range | -120 °C to -60 °C |
| Bath Volume | 20 L |
| Temperature Stability | ±2 °C |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Cooling Capacity | 600 W at -60 °C, 480 W at -80 °C, 180 W at -100 °C, 40 W at -120 °C |
| Circulation Pump Power | 100 W |
| Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Total Power Consumption | 4000 W |
| Display | LCD with Keypad Interface |
| Safety Protections | Delayed Start, Overcurrent, Overheat, Phase Sequence Monitoring |
| Bath Material | 304 Stainless Steel |
| External Port Size | 1/2″ |
| Opening Diameter | Ø280 mm |
| Bath Dimensions (Ø×H) | Ø300 × 300 mm |
| Unit Dimensions (W×D×H) | 810 × 1160 × 1310 mm |
| Net Weight | 190 kg |
| Max. Flask Capacity | 5000 mL |
| Recommended Ambient Conditions | 5–35 °C, ≤70% RH |
| Critical Operational Note | External circulation must be disabled when heat transfer fluid temperature falls below -90 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1230 |
| Price | Upon Request |
| Temperature Range | −120 °C to −60 °C |
| Ambient Temperature Range | 5–25 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Bath Capacity | 30 L |
| Bath Dimensions (Ø × H) | 400 mm × 235 mm |
| Opening Diameter | 320 mm |
| Cooling Capacity | 620 W at −60 °C |
| Max Flask Size | 10,000 mL |
| Total Power Consumption | 3234 W |
| Housing Material | Cold-Rolled Steel with Electrostatic Powder Coating |
| Overall Dimensions (L×W×H) | 1160 × 800 × 1310 mm |
| Net Weight | 190 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | DHJF-1250 |
| Cooling Capacity | 700 W at −60 °C, 580 W at −80 °C, 420 W at −100 °C, 125 W at −120 °C |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 50 L |
| Circulation Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Pump Power | 100 W |
| Total Power | 4000 W |
| Display Resolution | 0.1 °C |
| Evaporator Type | Coil-in-tank (stainless steel immersion coil) |
| Compressor | Hermetic scroll compressor |
| Condenser | Air-cooled finned-tube with oxygen-free copper tubing |
| Refrigerant | Mixed cryogenic refrigerant blend |
| External Port | 1/2″ NPT |
| Bath Opening Diameter | 400 mm |
| Bath Dimensions (Ø × H) | 450 × 320 mm |
| Max. Flask Capacity | 20 L |
| Bath Material | 304 stainless steel |
| Unit Dimensions (W × D × H) | 1340 × 820 × 1310 mm |
| Net Weight | 265 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Safety Protections | Phase sequence, overcurrent, overtemperature, delayed startup, thermal overload |
| Brand | The Great Wall |
|---|---|
| Model | DHJF-2005 |
| Temperature Range | −20 to 99 °C |
| Temperature Stability | ±0.2 °C |
| Bath Volume | 5 L |
| Circulation Type | Internal & External |
| Temperature Control Mode | Refrigeration + Heating |
| Heating Power | 50 W |
| Power Supply | 220–240 V~, 50 Hz |
| Construction | 304 Stainless Steel Bath & Piping |
| Refrigeration System | Hermetic Piston Compressor (Secop) with Finned Air-Cooled Condenser, Capillary Tube Expansion, and Immersed 304 Stainless Steel Coil Evaporator |
| Heating System | External 304 Stainless Steel Tubular Heater (Compliant with JB/T 4088) with Mechanical Over-Temperature Cut-Off |
| Control System | PID Algorithm with 5-Stage Programmable Ramp/Soak Profiles |
| Display | LCD Interface |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-2005 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal & External Circulation |
| Temperature Control | Refrigeration & Heating Dual-Mode |
| Bath Volume | 5 L |
| Temperature Range | −20 °C to 99 °C |
| Temperature Stability | ±0.2 °C |
| Total Rated Power | 2130 W |
| Heating Power | 1500 W |
| Refrigerant | R404A |
| Refrigeration Capacity | 570 W @ 10 °C, 470 W @ 0 °C, 385 W @ −10 °C, 230 W @ −20 °C |
| Pump Flow Rate | 20 L/min |
| Pump Pressure | 0.4 bar |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Input Voltage | 220 V~, 50 Hz |
| Ambient Operating Temperature | 5–35 °C |
| Bath Material | 304 Stainless Steel |
| External Port Thread | Rc1/2 |
| Opening Diameter | Ø210 mm |
| Bath Dimensions (Ø × H) | 250 × 130 mm |
| Max Flask Capacity Supported | 2000 mL |
| Overall Dimensions (W × D × H) | 385 × 560 × 735 mm |
| Net Weight | 55 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Vertical |
| Temperature Stability | ±0.2 °C |
| Operating Temperature Range | −20 °C to 99 °C |
| Bath Opening Diameter | Ø210 mm |
| Heating Power | 1500 W |
| Bath Volume | 5 L |
| External Dimensions (W×D×H) | 385 mm × 560 mm × 735 mm |
| Net Weight | 55 kg |
| Refrigerant | R404A |
| Refrigeration Capacity | 570 W at 10 °C, 470 W at 0 °C, 385 W at −10 °C, 230 W at −20 °C |
| Circulation Pump Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Input Power Supply | 220 V~, 50 Hz |
| Protection Functions | Dry-run prevention (heating), overtemperature, overcurrent, leakage current, thermal delay, and overheat safeguards |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Bath Material | 304 Stainless Steel |
| Max. Flask Capacity Supported | 2000 mL |
| External Circulation Port | Rc1/2 |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-2005 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal & External Circulation |
| Temperature Control | Refrigeration & Heating |
| Bath Volume | 5 L |
| Temperature Range | −20 °C to +99 °C |
| Temperature Stability | ±0.2 °C |
| Power Supply | 220 V~, 50 Hz |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-2005A |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal & External Circulation |
| Temperature Control | Refrigeration & Heating |
| Bath Volume | 5 L |
| Temperature Range | −20 °C to 99 °C |
| Temperature Stability | ±0.2 °C |
| Temperature Resolution | 0.01 °C |
| Total Power Consumption | 2210 W |
| Heating Power | 1500 W |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Refrigerant | R404A |
| Cooling Capacity | 300 W at −20 °C, 420 W at 0 °C, 520 W at 20 °C, 900 W at 90 °C |
| Pump Flow Rate | 20 L/min |
| Maximum Backpressure | 0.4 bar |
| Input Voltage | 220 V~, 50 Hz |
| Ambient Operating Temperature | 5–35 °C |
| Relative Humidity | ≤70% |
| Bath Opening Diameter | Ø210 mm |
| Bath Dimensions (Ø × H) | 250 × 130 mm |
| Overall Dimensions (W × D × H) | 385 × 560 × 735 mm |
| Net Weight | 55 kg |
| Safety Protections | Overload, Overcurrent, Overtemperature, Leakage Current, Overvoltage, Dry-run Protection (for heating models) |
| Brand | The Great Wall |
|---|---|
| Model | DHJF-2005A |
| Type | Circulating Constant-Temperature Bath with Integrated Magnetic Stirrer |
| Temperature Range | −20 °C to 99 °C |
| Temperature Stability | ±0.2 °C |
| Display Resolution | 0.01 °C |
| Bath Volume | 5 L (working volume) |
| External Circulation Flow Rate | 20 L/min |
| Maximum Pressure | 0.4 bar |
| Refrigerant | R404A |
| Cooling Capacity | 300 W at −20 °C, 420 W at 0 °C, 520 W at 20 °C, 900 W at 90 °C |
| Heating Power | 1500 W |
| Total Power Consumption | 2210 W |
| Stirring Motor Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Bath Material | 304 Stainless Steel |
| Opening Diameter | Ø210 mm |
| External Port | Rc1/2 |
| Max Flask Capacity Supported | 2000 mL |
| Dimensions (W×D×H) | 385×560×735 mm |
| Net Weight | 55 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Safety Protections | Overtemperature, overcurrent, overload, leakage current, overpressure, dry-run prevention (for heating models) |
| Key | Brand: The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Vertical |
| Temperature Range | −30 °C to 99 °C |
| Temperature Stability | ±0.5 °C |
| Stirring Function | Built-in Magnetic Stirrer (Dual-Position: Bath & Reaction Vessel) |
| Lid | Adjustable Telescopic Cover |
| Accessories | Universal Mounting Rack for Burettes, Probes, and Sensors |
| Safety | Dry-run Protection (Heating Models Only) |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Circulating Constant-Temperature Bath |
| Circulation Mode | Internal & External Circulation |
| Temperature Control | Dual-mode (Refrigeration & Heating) |
| Bath Volume | 10 L |
| Temperature Range | −30 °C to +99 °C |
| Temperature Stability | ±0.5 °C |
| Power Supply | 220 V~, 50 Hz |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Manufacturer |
| Product Category | Domestic |
| Model | DHJF-3010 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal & External |
| Temperature Control | Refrigeration & Heating |
| Bath Volume (L) | 10 |
| Temperature Range (°C) | −30 to 99 |
| Temperature Stability (°C) | ±0.5 |
| Total Power Input (W) | 2400 |
| Voltage/Frequency | 220 V~, 50 Hz |
| Heating Power (W) | 1500 |
| Magnetic Stirring Power (W) | 50 |
| Stirring Speed (rpm) | 100–1000 |
| Refrigerant | R410A |
| Cooling Capacity (W) @ 10°C/0°C/−10°C/−20°C/−30°C | 1700/1250/800/300/150 |
| Pump Flow Rate (L/min) | 20 |
| Pump Pressure (bar) | 0.4 |
| Opening Diameter (mm) | Φ210 |
| Bath Dimensions (mm) | Φ250 × 250 |
| Overall Dimensions (mm) | 395 W × 505 D × 825 H |
| Net Weight (kg) | 60 |
| Ambient Operating Temperature (°C) | 5–35 |
| Ambient Relative Humidity | ≤70% |
| External Circulation Port | 1/2" NPT |
| Key | Brand: The Great Wall |
|---|---|
| Model | DHJF-3020 |
| Configuration | Vertical Benchtop Unit |
| Temperature Range | −30 °C to 99 °C |
| Temperature Stability | ±0.5 °C |
| Integrated Feature | Built-in Magnetic Stirrer |
| Cooling/Heating Medium | Ethanol/Water or Similar Low-Freezing-Point Fluid |
| Safety Protection | Dry-run Prevention (for heating models) |
| Compliance | Designed for GLP-compliant laboratory environments |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-4002 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal Circulation |
| Temperature Control | Refrigeration & Heating |
| Bath Volume | 2 L |
| Temperature Range | −40 °C to 99 °C |
| Temperature Stability | ±0.2 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-4002 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | External Circulation |
| Temperature Control | Refrigeration & Heating Dual-Mode |
| Bath Volume | 2 L |
| Temperature Range | −40 °C to +99 °C |
| Temperature Stability | ±0.2 °C |
| Total Rated Power | 820 W |
| Heating Power | 300 W |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Refrigerant | R404A |
| Cooling Capacity (W) | 290 @ 10 °C, 200 @ 0 °C, 120 @ −10 °C, 80 @ −20 °C, 50 @ −30 °C, 10 @ −40 °C |
| Input Voltage | 220 V~, 50 Hz |
| Opening Diameter | Ø140 mm |
| Bath Dimensions | Ø160 × 105 mm (D × H) |
| Max Flask Capacity | 500 mL |
| Bath Material | 304 Stainless Steel |
| Overall Dimensions | 430 W × 470 D × 435 H mm |
| Net Weight | 35 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |