The Great Wall
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| Key | Brand: The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DL10-1000G Circulating Chiller |
| Pricing | Upon Request |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DL20 |
| Instrument Type | Integrated Unit |
| Cooling Method | Air-Cooled |
| Temperature Control Range | −30 °C to +5 °C |
| Refrigeration Capacity | 500–2800 W |
| Temperature Stability | ±2 °C |
| Circulation Pump Pressure | 0.4 bar |
| Circulation Flow Rate | 20 L/min |
| Reservoir Volume | 30 L |
| Operating Mode | Continuous |
| Key | Brand: The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Capacity | 20 L |
| Ultimate Vacuum | ≤2 kPa/h |
| Rotation Speed | 0–180 rpm |
| Bath Temperature Range | Ambient +5 °C to 95 °C |
| Temperature Control Accuracy | ±1 °C |
| Condensing Area | Main Condenser 0.390 m² |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Protection Class | IP20 |
| Pollution Degree | 2 |
| Max Evaporation Rate (Water) | 5 L/h |
| Bath Material | 06Cr19Ni10 Stainless Steel (AISI 304 equivalent) |
| Glass Components | DIN 3.3 Borosilicate Glass |
| Sealing Leakage Rate | ≤0.03 kPa/min |
| Heating Power | 4000 W |
| Rotating Motor Power | 370 W |
| Total Power Consumption | 4500 W |
| Dimensions (with glassware) | 1210 × 740 × 2040 mm (W×D×H) |
| Weight (with glassware) | 190 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Producer |
| Country of Origin | China |
| Model | GFY-10L |
| Capacity | 10 L |
| Vessel Material | High-Borosilicate Glass (DIN/ISO 3585 compliant) |
| Operating Pressure Range | Medium-pressure (up to 0.4 MPa gauge) |
| Ultimate Vacuum | ≤ –0.098 MPa (absolute, equivalent to ~2 mbar) |
| Valve Type | PTFE/FKM rotary stopcock with precision flow control |
| Stirring | Variable-speed overhead mechanical stirrer (0–200 rpm, torque-regulated) |
| Application Class | Pilot-scale liquid–liquid extraction |
| Compliance | Designed per GB/T 21673–2008 (Laboratory Glassware — Specifications for Separatory Funnels), compatible with ISO 17025-accredited lab workflows |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GFY-10L |
| Price Range | USD 2,800–7,000 (FOB) |
| Usable Volume | 10 L |
| Vessel Material | Borosilicate Glass 3.3 |
| Operating Pressure Range | −0.1 MPa to 0.0 MPa (Vacuum to Atmospheric) |
| Frame Material | SUS304 Stainless Steel |
| Temperature Resistance | −80 °C to +200 °C |
| Stirring Motor Power | 90 W |
| Speed Control | Frequency Inverter |
| Rotational Speed Range | 50–500 rpm |
| Lid Port Configuration | One 50# flange (stirrer), Two 34/35 standard taper joints (liquid feed & vent), Electrical Supply: 220–240 V~, 50 Hz |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | GRC-50 |
| Instrument Classification | Jacketed Glass Reactor |
| Vessel Capacity | 50 L |
| Vessel Material | 3.3 Borosilicate Glass |
| Operating Pressure Range | –0.1 MPa to ambient |
| Temperature Range | –80 °C to +200 °C |
| Vacuum Performance | ≤ –0.095 MPa (absolute) |
| Sealing Components | PTFE旋塞 & PTFE-lined discharge valve |
| Jacket Configuration | Dual-layer (standard), optional triple-layer with vacuum-insulated outer jacket |
| Insulation | Integrated thermal insulation sleeve for external tubing connections |
| Customization Options | Filter-integrated configuration, bottom-mounted drip tray, feed control via constant-pressure dropping funnel, jacket fluid temperature regulation via external chiller/heater circulator |
| Compliance | Designed per general laboratory reactor safety and material compatibility guidelines (ASTM E2654, ISO 17025-supportive operation, GLP-aligned documentation practices) |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic (China) |
| Model | CLZZ-30 |
| Price | Upon Request |
| Usable Volume | Small-Scale |
| Instrument Material | Borosilicate Glass 3.3 |
| Operating Pressure | Low Vacuum to Atmospheric |
| Collection Flask Capacity | 20 L |
| Filter Disc Material | PTFE |
| Filter Pore Size | 20–30 µm |
| Filtration Vessel Diameter | Ø300 mm |
| Temperature Range | –80 °C to +200 °C |
| Internal Pressure Rating | Full vacuum to ambient pressure |
| Lid Port Configuration | 40# Flange (liquid feed), 24/29# Standard Tapered Ground Joints (vacuum & vent), PTFE Stopcock Drain Valve |
| Frame Material | SUS304 Stainless Steel + Anodized 6061-F Aluminum Plate |
| Overall Dimensions (W×D×H) | Approx. 650 × 650 × 1600 mm |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1005 |
| Quotation | Upon Request |
| Refrigeration System | Single-stage compression with cascade sub-cooling technology |
| Compressor | Tecumseh hermetic piston compressor |
| Condenser | Air-cooled, oxygen-free copper spiral-tube design |
| Heat Exchanger | Fully welded series-connected multi-stage heat exchanger |
| Throttling Device | Capillary tube |
| Evaporator | Coil-type, immersed in bath reservoir |
| Temperature Control | Digital intelligent controller, 0.1 °C display resolution |
| Bath Volume | 5 L |
| Operating Temperature Range | –100 °C to –60 °C |
| Temperature Stability | ±2 °C |
| Rated Power | 820 W |
| Refrigerant | Mixed refrigerant blend |
| Cooling Capacity | 110 W at –60 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Drain Port | 1/2″ BSP |
| Reservoir Opening Diameter | Ø210 mm |
| Reservoir Dimensions | Ø220 mm × 180 mm (D × H) |
| Max Flask Capacity | 2000 mL |
| Reservoir Material | ASTM A240 Type 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 | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | DHJF-1005 |
| Quotation | Upon Request |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 5 L |
| Refrigeration Capacity | 110 W at −60 °C, 50 W at −80 °C, 20 W at −100 °C |
| Total Rated Power | 820 W |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Display Resolution | 0.1 °C |
| 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 | AISI 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 | Original Equipment Manufacturer (OEM) |
| Country of Manufacture | China |
| Model | DHJF-1010 |
| Quotation | Upon Request |
| Refrigeration System | Single-stage compression with cascade subcooling design |
| Compressor | Tecumseh hermetic piston compressor |
| Condenser | Air-cooled, oxygen-free copper spiral tube |
| Heat Exchanger | Fully welded series-connected multi-stage heat exchanger |
| Throttling Device | Capillary tube |
| Evaporator | Coil-type, immersed in bath reservoir |
| Temperature Control | Digital microprocessor controller with 0.1 °C display resolution |
| Bath Volume | 10 L |
| Operating Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Rated Power | 2050 W |
| Refrigerant | Mixed refrigerant blend (R508B/R23 or equivalent) |
| Cooling Capacity | 160 W at −60 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 3-phase, 380 V ±10%, 50 Hz |
| Drain Port | 1/2″ BSP |
| Reservoir Opening Diameter | Ø210 mm |
| Reservoir Dimensions | Ø250 × 250 mm |
| Max Flask Capacity | 3000 mL |
| Bath Material | AISI 304 stainless steel |
| Overall Dimensions (W×D×H) | 670 × 780 × 1085 mm |
| Net Weight | 150 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Manufacture | China |
| Model | DHJF-1020 |
| Quotation | Upon Request |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Tank Capacity | 20 L |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Refrigeration Capacity | 600 W at −60 °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 |
| Tank Dimensions (Ø×H) | 300 mm × 300 mm |
| Opening Diameter | 280 mm |
| External Port Size | 1/2″ BSP |
| Compatible Flask Volume | Up to 5000 mL |
| Tank Material | AISI 304 Stainless Steel |
| Unit Dimensions (W×D×H) | 810 × 1160 × 1310 mm |
| Net Weight | 154 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Safety Protections | Phase sequence monitoring, overcurrent protection, thermal overload cutoff, startup delay logic |
| Operational Constraint | External circulation function disabled when bath temperature < −90 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | DHJF-1030 |
| Cooling Capacity | 620 W at −60 °C, 480 W at −80 °C, 200 W at −100 °C |
| Bath Volume | 30 L |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Circulation Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Pump Power | 100 W |
| Total Power Consumption | 4 kW |
| Display | Digital LCD with 0.1 °C resolution |
| Refrigerant | Mixed refrigerant (R23/R13/R508B or equivalent) |
| Construction | 304 Stainless Steel bath & piping |
| External Port | 1/2″ NPT |
| Bath Dimensions | Ø400 × 235 mm |
| Footprint | 1160 W × 800 D × 1310 H mm |
| Weight | 180 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH, 3-phase 380 V / 50 Hz |
| Safety Protections | Phase sequence detection, overcurrent, overheating, delayed startup, thermal cutoff |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | DHJF-1030 |
| Cooling Capacity | 620 W at −60 °C, 480 W at −80 °C, 200 W at −100 °C |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 30 L |
| Pump Flow Rate | 20 L/min |
| Max. Circulation Pressure | 0.4 bar |
| Power Input | 4000 W (3-phase, 380 V, 50 Hz) |
| Display Resolution | 0.1 °C |
| Evaporator Type | Immersed Helical Coil |
| Compressor | Panasonic Hermetic Scroll Compressor |
| Refrigerant | Mixed Cryogenic Refrigerant Blend |
| Safety Protections | Phase Sequence Monitoring, Overcurrent, Overtemperature, Delayed Start, Thermal Cut-off |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| External Port | 1/2″ NPT |
| Bath Opening Diameter | 320 mm |
| Bath Dimensions (Ø × H) | 400 × 235 mm |
| Max. Flask Capacity | 10,000 mL |
| Bath Material | AISI 304 Stainless Steel |
| Footprint (W × D × H) | 1160 × 800 × 1310 mm |
| Net Weight | 180 kg |
| Warning | External circulation must be disabled when bath temperature < −90 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | DHJF-1050 |
| Cooling Capacity | 700 W at −60 °C |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 50 L |
| Pump Flow Rate | 20 L/min |
| Maximum Pressure | 0.4 bar |
| Circulation Pump Power | 100 W |
| Total Power Consumption | 4876 W |
| Display Resolution | 0.1 °C |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Evaporator Type | Coil-in-Tank (Stainless Steel 304) |
| Compressor | Panasonic Hermetic Scroll Compressor |
| Condenser | Air-Cooled Finned-Tube with Oxygen-Free Copper |
| Heat Exchanger Architecture | Single-Stage Compression with Series-Connected Subcooling Stages |
| Safety Protections | Phase Sequence, Overcurrent, Overheat, Delayed Start |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 3-phase, 380 V, 50 Hz |
| External Port Size | 1/2″ BSP |
| Bath Opening Diameter | 400 mm |
| Bath Dimensions (Ø × H) | 450 × 320 mm |
| Max Flask Capacity | 20 L |
| Unit Dimensions (W × D × H) | 1340 × 820 × 1310 mm |
| Net Weight | 265 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1050 |
| Quotation | Upon Request |
| Cooling Capacity | 700 W at −60 °C, 580 W at −80 °C, 420 W at −100 °C |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 50 L |
| Pump Flow Rate | 20 L/min |
| Max. Circulation Pressure | 0.4 bar |
| Pump Power | 100 W |
| Total Power Consumption | 4.876 kW |
| Display | LCD with 0.1 °C resolution |
| Bath Material | 304 Stainless Steel |
| External Port | 1/2″ BSP |
| Bath Opening Diameter | 400 mm |
| Bath Internal Dimensions | Ø450 × 320 mm |
| Max. Flask Capacity | 20,000 mL |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Unit Dimensions (W×D×H) | 1340 × 820 × 1310 mm |
| Net Weight | 265 kg |
| Safety Protections | Phase sequence, overcurrent, overheating, and startup delay protection |
| Refrigerant | Mixed refrigerant blend |
| Note | External circulation must be disabled when bath temperature < −90 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | OEM/ODM Producer |
| Model | DHJF-1220 |
| Cooling Capacity | 600 W at −60 °C, 480 W at −80 °C, 180 W at −100 °C, 40 W at −120 °C |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 20 L |
| Circulation Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Pump Power | 100 W |
| Total Power Consumption | 4000 W |
| Reservoir Material | 304 Stainless Steel |
| Reservoir Dimensions (Ø×H) | 300 mm × 300 mm |
| Max. Flask Capacity | 5000 mL |
| Display | Digital LCD with Keypad Interface |
| Safety Protections | Delayed Start, Overcurrent, Overtemperature, Phase Sequence Monitoring |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 3-phase, 380 V, 50 Hz |
| External Port Size | 1/2″ NPT |
| Footprint (W×D×H) | 810 × 1160 × 1310 mm |
| Net Weight | 190 kg |
| Critical Operational Constraint | External circulation must be disabled when bath temperature < −90 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Manufacture | China |
| Model | DHJF-1205 |
| Quotation | Upon Request |
| Bath Volume (L) | 5 |
| Temperature Range (°C) | –120 to –60 |
| Temperature Stability (°C) | ±2 |
| Rated Power (W) | 820 |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Cooling Capacity (W) | 110 @ –60°C |
| Magnetic Stirring Power (W) | 50 |
| Stirring Speed (rpm) | 100–1000 |
| Ambient Operating Temperature (°C) | 5–35 |
| Ambient Relative Humidity | ≤70% |
| Power Supply | 220–240 V~, 50 Hz |
| Drain Port Size | 1/2" |
| Bath Opening Diameter (mm) | Ø210 |
| Bath Dimensions (mm) | Ø220 × 180 (D × H) |
| Max Flask Capacity (mL) | 2000 |
| Bath Material | AISI 304 Stainless Steel |
| Overall Dimensions (mm) | 630 W × 795 D × 790 H |
| Net Weight (kg) | 125 |
| Safety Protections | Delayed Start, Overcurrent, Overtemperature |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | DHJF-1205 |
| Quotation | Upon Request |
| Refrigeration System | Single-stage compression with cascade sub-cooling technology |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 5 L |
| Refrigerant | Mixed refrigerant blend |
| Cooling Capacity | 110 W at −60 °C |
| Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Display Resolution | 0.1 °C |
| Input Power | 820 W |
| Voltage/Frequency | 220–240 V~, 50 Hz |
| Bath Material | 304 stainless steel |
| External Dimensions (W×D×H) | 630 × 795 × 790 mm |
| Net Weight | 125 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Drain Port | 1/2″ BSP |
| Bath Opening Diameter | Ø210 mm |
| Bath Internal Dimensions | Ø220 × 180 mm |
| Max Flask Capacity | 2000 mL |
| Safety Protections | Delayed start, overcurrent, and overtemperature protection |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Origin | China |
| Model | DHJF-1210 |
| Pricing | Upon Request |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Manufacture | China |
| Model | DHJF-1230 |
| Price | Upon Request |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Cooling Capacity | 620 W at –60°C, 480 W at –80°C, 200 W at –100°C, 80 W at –120°C |
| Temperature Range | –120°C to –60°C |
| Temperature Stability | ±2°C |
| Bath Volume | 30 L |
| Circulation Pump | 100 W, 20 L/min, 0.4 bar max pressure |
| Tank Dimensions | Ø400 × 235 mm |
| Opening Diameter | Ø320 mm |
| Max Flask Capacity | 10,000 mL |
| Tank Material | 304 Stainless Steel |
| Compressor | Panasonic Hermetic Scroll Compressor |
| Condenser | Air-Cooled Finned-Tube with Oxygen-Free Copper Coils |
| Evaporator | Immersed Coil-Type in Bath Reservoir |
| Expansion Device | Capillary Tube |
| Control System | Digital Microprocessor Controller, 0.1°C Display Resolution |
| Safety Protections | Phase Sequence, Overcurrent, Overheat, Delayed Start, Thermal Cut-off |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Ambient Operating Conditions | 5–35°C, ≤70% RH |
| Unit Dimensions (W×D×H) | 1160 × 800 × 1310 mm |
| Net Weight | 190 kg |
| Note | External circulation is disabled when bath temperature < –90°C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | DHJF-1230 |
| Cooling Capacity | 620 W at −60 °C, 480 W at −80 °C, 200 W at −100 °C, 80 W at −120 °C |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 30 L |
| Pump Flow Rate | 20 L/min |
| Max. Circulation Pressure | 0.4 bar |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Total Power Consumption | 4 kW |
| Display | LCD with 0.1 °C resolution |
| Evaporator Type | Coil-in-tank (stainless steel coil immersed in bath fluid) |
| Compressor | Panasonic hermetic scroll compressor |
| Condenser | Air-cooled finned-tube with oxygen-free copper tubing |
| Refrigerant | Mixed refrigerant blend |
| Safety Protections | Phase sequence, overcurrent, overtemperature, and startup delay protection |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| External Port | 1/2″ BSP |
| Bath Opening Diameter | 320 mm |
| Bath Internal Dimensions | Ø400 × 235 mm |
| Max. Flask Capacity | 10,000 mL |
| Bath Material | AISI 304 stainless steel |
| Unit Dimensions (W×D×H) | 1160 × 800 × 1310 mm |
| Net Weight | 190 kg |
| Critical Operational Constraint | External circulation must be disabled when bath temperature < −90 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | DHJF-1250 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal Circulation |
| Temperature Control | Refrigeration & Heating |
| Bath Volume | 50 L |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Refrigeration Capacity | 700 W at −60 °C / 580 W at −80 °C / 420 W at −100 °C / 125 W at −120 °C |
| Max Flask Capacity | 20 L |
| Overall Power Consumption | 4876 W |
| External Dimensions (L×W×H) | 1340 × 820 × 1310 mm |
| Net Weight | 265 kg |
| Tank Material | 304 Stainless Steel + Polymer Anti-Corrosion Lining |
| Display | Digital LED with Keypad Input |
| Cabinet Finish | Cold-Rolled Steel with Electrostatic Powder Coating |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Country of Manufacture | China |
| Model | DHJF-1250 |
| Quotation | Available Upon Request |
| Refrigerant | Mixed Cryogenic Refrigerant Blend |
| Reservoir Volume | 50 L |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Refrigeration Capacity | 700 W at −60 °C |
| Circulating Pump Power | 100 W |
| Flow Rate | 20 L/min |
| Max. Pressure | 0.4 bar |
| Display Resolution | 0.1 °C |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Dimensions (W×D×H) | 1340 × 820 × 1310 mm |
| Weight | 265 kg |
| Reservoir Material | 304 Stainless Steel |
| External Port Size | 1/2″ BSP |
| Reservoir Opening Diameter | Ø400 mm |
| Reservoir Internal Dimensions | Ø450 × 320 mm |
| Max. Flask Capacity | 20,000 mL |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Safety Protections | Phase Sequence Detection, Overcurrent, Overheat, Delayed Start, Thermal Cut-off |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-4005 |
| Temperature Range | −40 °C to +99 °C |
| Temperature Stability | ±0.2 °C |
| Bath Volume | 5 L |
| Bath Dimensions (Ø × H) | 250 mm × 130 mm |
| Opening Diameter | 210 mm |
| Max Flask Capacity | 2000 mL |
| Heating Power | 1500 W |
| Rated Flow Rate | 20 L/min |
| Maximum Pressure | 0.4 bar |
| Ambient Operating Temperature | 5–25 °C |
| Power Supply | 220–240 V~, 50 Hz |
| Refrigeration Capacity | 1000 W at 10 °C / 450 W at −20 °C / 40 W at −40 °C |
| Refrigerant | R404A |
| Total Power Consumption | 2450 W |
| Housing Material | Cold-Rolled Steel with Electrostatic Powder Coating |
| Overall Dimensions (W×D×H) | 400 mm × 535 mm × 790 mm |
| Net Weight | 56 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Circulating Constant-Temperature Bath |
| Circulation Mode | External Recirculation |
| Temperature Control | Dual-mode (Refrigeration & Heating) |
| Bath Volume | 5 L |
| Temperature Range | −40 °C to +99 °C |
| Temperature Stability | ±0.2 °C |
| Heating Power | 1500 W |
| Pump Flow Rate | 20 L/min |
| Maximum Pressure | 0.4 bar |
| Power Supply | 220 V / 50 Hz |
| Total Power Consumption | 2450 W |
| External Dimensions (L×W×H) | 415 × 365 × 740 mm |
| Net Weight | 56 kg |
| Housing Material | Cold-Rolled Steel with Electrostatic Powder Coating |
| Ambient Operating Temperature | 5–25 °C |
| Opening Diameter × Depth | Ø250 × 130 mm |
| Drain Valve | Integrated |
| Stirring System | Sealed Magnetic Stirrer with Optional Internal Secondary Stirring |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-4010 |
| Instrument Type | Vertical |
| Temperature Stability | ±0.2 °C |
| Temperature Range (Heat Transfer Fluid Output) | −40 °C to +99 °C |
| Bath Opening Diameter | Ø210 mm |
| Bath Volume | 10 L |
| External Dimensions (W×D×H) | 485 mm × 590 mm × 935 mm |
| Net Weight | 84 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-4020 |
| Price | Upon Request |
| Refrigerant | R404A |
| Bath Volume | 20 L |
| Temperature Range | −40 °C to +99 °C |
| Temperature Stability | ±0.5 °C |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power Consumption | 2870 W |
| Heating Power | 1500 W |
| Cooling Capacity | 2100 W (at 10 °C), 1750 W (at 0 °C), 1300 W (at −10 °C), 900 W (at −20 °C), 480 W (at −30 °C), 150 W (at −40 °C) |
| Circulation Pump | Stainless-steel shielded pump, 100 W, 20 L/min @ 0.4 bar |
| Stirring | Internal magnetic stirring, 50 W, 100–1000 rpm |
| Stirring Port Opening | Φ280 mm |
| Inner Bath Dimensions | Φ300 × 300 mm |
| Max Flask Capacity | 5000 mL (user-supplied) |
| Bath Material | 304 stainless steel |
| External Footprint | 535 W × 595 D × 1010 H mm |
| Net Weight | 95 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Constant-Temperature Circulating Bath |
| Circulation Mode | External Circulation |
| Temperature Control | Refrigeration & Heating Dual-Mode |
| Bath Volume | 5 L |
| Temperature Range | −80 °C to +99 °C |
| Temperature Stability | ±0.2 °C |
| Stirring | Integrated Magnetic Stirrer (Dual-Point: Bath & Sample Vessel) |
| Lid | Adjustable Telescopic Cover |
| Accessories | Universal Mounting Bracket for Burettes, Probes, and Sensors |
| Safety | Dry-Burn Protection (Heating Mode) |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | DL10-3000G |
| Cooling Capacity | 3000 W (at 25°C ambient, 15°C coolant) |
| Temperature Range | –10°C to 25°C (with ΔT ≤ room temp – 5°C) |
| Stability | ±2°C |
| Control Algorithm | PID |
| Refrigerant | R134a (CFC-free) |
| Pump Flow Rate | 16 L/min |
| Reservoir Volume | 30 L |
| Reservoir Material | SUS304 Stainless Steel |
| Power Supply | 220–240 V~, 50 Hz |
| Rated Power | 2200 W |
| Rated Current | 11.7 A |
| External Port | Rc 1/2 internal thread |
| Reservoir Fill Opening | Ø60 mm |
| Dimensions (W×D×H) | 495 × 760 × 860 mm |
| Net Weight | 108 kg |
| Ambient Operating Conditions | 5–35°C, ≤70% RH |
| Safety Protections | Compressor delay start, high-pressure, overload, and overcurrent protection |
| Temperature Sensor | Pt100 |
| Display | Digital LED |
| Evaporator | 304 stainless steel coil-in-tank design |
| Condenser | Air-cooled finned-tube with oxygen-free copper spiral tubing |
| Compressor | Copeland Scroll (dual-flex design) |
| Dryer Filter | Danfoss DML series with 3A molecular sieve |
| Circulation Pump | Imported high-pressure rotary vane pump |
| Dual-stage filtration | at fill port and reservoir outlet |
| Liquid Level Indicator | Transparent sight tube |
| System Pressure Gauge | Front-panel analog gauge |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Integrated Circulating Chiller |
| Cooling Method | Water-Cooled |
| Temperature Range | -30°C to +5°C |
| Refrigeration Capacity | 700 W |
| Circulation Pump Pressure | 0.4 bar |
| Circulation Flow Rate | 20 L/min |
| Construction | Stainless Steel (SUS Standard) & Chemical-Resistant Polymer Components |
| Refrigerant | CFC-Free, Environmentally Compliant (R-404A or equivalent) |
| Safety Features | Low-Level Protection, Freeze Prevention, Clog Resistance, Pressure Monitoring, Overload-Protected Compressor |
| Compliance | Designed for GLP-compliant lab environments |