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| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer | The Great Wall Scientific Industrial & Trading Co., Ltd. |
| Model | R-1010EX |
| Capacity | 10 L |
| Ultimate Vacuum | < 399.9 Pa (down to ≤100 Pa with compatible vacuum pump) |
| Rotation Speed | 20–130 rpm |
| Temperature Control Range | Ambient +5 °C to 95 °C |
| Temperature Accuracy | ±1.5 °C |
| Heating Power | 4500 W |
| Total Rated Power | 4800 W |
| Condenser Surface Area | Primary 0.390 m² + Secondary 0.253 m² |
| Rotating Flask | 10.0 L, Φ95 mm standard taper flange |
| Collection Flask | 5 L |
| Bath Material | SUS304 stainless steel (Φ350 × 220 mm) |
| Lift Stroke | 0–160 mm, manual |
| Sealing System | Dual-seal with PTFE + FKM (fluoroelastomer) |
| Feed/Drain Valve Core | PTFE |
| Evaporation Rate | 3.2 L/h (water), 8.6 L/h (ethanol) |
| Safety Protections | Overcurrent, ground fault, overtemperature |
| Ambient Operating Conditions | 5–35 °C, ≤65% RH |
| Dimensions (mm) | Main Unit 990W × 550D × 1740H |
| Weight | Main Unit 85 kg, Cabinet 58 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | DHJF-1020 |
| Quotation | Upon Request |
| Cooling Capacity | 600 W at −60 °C, 480 W at −80 °C, 180 W at −100 °C |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 20 L |
| Pump Flow Rate | 20 L/min |
| Maximum Pressure | 0.4 bar |
| Circulation Pump Power | 100 W |
| Total Power Consumption | 4 kW |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Evaporator Type | Coil-in-Tank (Immersion) |
| Compressor | Panasonic Hermetic Scroll Compressor |
| Condenser | Air-Cooled Finned-Tube with Oxygen-Free Copper |
| Heat Exchanger Architecture | Single-Stage Compression with Series-Coupled Subcooling Stages |
| Control Interface | LCD Display with Digital Keypad |
| Safety Protections | Phase Sequence Monitoring, Overcurrent Protection, Overtemperature Cut-off, Delayed Start, Thermal Overload Relay |
| 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 | 280 mm |
| Bath Dimensions (Ø × H) | 300 × 300 mm |
| Max Flask Capacity | 5000 mL |
| Bath Material | AISI 304 Stainless Steel |
| Footprint (W × D × H) | 810 × 1160 × 1310 mm |
| Net Weight | 154 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-8002W Horizontal |
| Instrument Type | Horizontal |
| Temperature Stability | ±2 °C |
| Operating Temperature Range | −80 °C to +10 °C |
| Bath Opening Diameter | Ø140 mm |
| Bath Volume | 2 L |
| External Dimensions | 410 W × 610 D × 495 H mm |
| Net Weight | 68 kg |
| Refrigerants | R404A / R23 |
| Cooling Capacity | 200 W at −40 °C, 120 W at −60 °C, 60 W at −80 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed Range | 100–1000 rpm |
| Heating Protection | Dry-run prevention (heating models only) |
| Safety Protections | Delayed start, overcurrent, overtemperature |
| Power Supply | 220 V~, 50 Hz |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| 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 |
| Instrument Type | Split-System |
| Cooling Method | Air-Cooled |
| Temperature Range | −30 °C to +10 °C |
| Refrigeration Capacity | 3.5 kW to 28 kW |
| Temperature Stability | ±2 °C |
| Circulating Pump Pressure | 2.2 bar |
| Circulating Pump Flow Rate | 67 L/min |
| Reservoir Volume | 200 L |
| Operation Mode | Continuous Duty |
| 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 |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal & External Circulation |
| Bath Volume | 20 L |
| Temperature Range | Ambient +5°C to 160°C |
| Temperature Stability | ±0.5°C |
| Cooling Interface | Integrated Water-Cooling Inlet/Outlet |
| Control Method | PID Digital Temperature Control |
| Safety Features | Over-Temperature Alarm, Over-Current Protection, Overload Protection |
| System Design | Fully Sealed Closed-Loop Circulation |
| Display | LCD Panel with Real-Time Temperature Readout |
| Exhaust Valve | Integrated for Fluid Top-Up |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | VT-5000HC |
| Pricing | Available Upon Request |
| Cooling Capacity | 920 W at −10°C, 520 W at −20°C, 280 W at −30°C, 40 W at −40°C |
| Minimum No-Load Temperature | −40°C |
| Cooling Method | Indirect (Closed-Circuit Refrigeration) |
| Temperature Display | Digital, Pt100 Sensor |
| Temperature Setpoint Range | Adjustable Within Operating Range |
| Safety Protections | Delayed Start, Overcurrent Protection, Overtemperature Protection |
| Refrigerant | R404A |
| Cold Trap Chamber Dimensions | Ø250 × 250 mm (Stainless Steel 304) |
| Condenser Flask Dimensions | Ø50 × 300 mm |
| Condenser Flask Material | DIN 3.3 Borosilicate Glass (ISO 3585) |
| Quantity of Flasks | 3 |
| Vacuum Port Interface | Flexible Tubing Fitting, OD 12 mm |
| Ambient Operating Conditions | 5–35°C, ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power Consumption | 835 W |
| Rated Current | 3.8 A |
| Overall Dimensions (W×D×H) | 537 × 579 × 1094 mm |
| Net Weight | 85 kg |
| Brand | The Great Wall |
|---|---|
| Model | DHJF-8002W |
| Type | Horizontal stirred reaction bath with integrated refrigeration and heating |
| Temperature Range | −80 °C to +10 °C |
| Temperature Stability | ±2 °C |
| Bath Capacity | 2 L |
| Refrigerants | R404A / R23 |
| Cooling Capacity | 200 W at −40 °C, 120 W at −60 °C, 60 W at −80 °C |
| Heating Function | Yes (with dry-run protection) |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Bath Opening Diameter | Ø140 mm |
| Bath Internal Dimensions | Ø160 mm × 105 mm depth |
| Max Vessel Capacity | 500 mL |
| Bath Material | 304 stainless steel |
| Overall Dimensions (W×D×H) | 410 × 610 × 495 mm |
| Net Weight | 68 kg |
| Power Supply | 220 V~, 50 Hz |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Safety Protections | Delayed startup, overcurrent, overtemperature, dry-run (heating mode only) |
| 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 Manufacturer |
| Country of Origin | China |
| Model | ZT-20-200-30H (Air-Cooled) |
| Temperature Range | −30 °C to 200 °C |
| Temperature Stability | ±0.5 °C |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power Consumption | 4.7 kW |
| Cooling Capacity | 1.7 kW at 200 °C / 2.6 kW at 10 °C / 1.1 kW at −10 °C / 0.7 kW at −20 °C / 0.3 kW at −30 °C |
| Refrigerant | R22 |
| Bath Fluid Volume | 10 L |
| Heating Power | 3 kW |
| Pump Flow Rate | 30 L/min |
| Pump Pressure | 1 bar |
| Dimensions (W×D×H) | 580 × 825 × 1370 mm |
| Weight | 172 kg |
| [Brand | Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | R-1020E |
| Rotating Flask Capacity | 20.0 L (DN120 Flange) |
| Rotation Speed Range | 20–150 rpm |
| Temperature Control Range | Ambient +5 °C to 180 °C |
| Temperature Accuracy | ±1.5 °C (water bath), ±3.0 °C (oil bath) |
| Condensing Area | Main Condenser 0.95 m², Auxiliary Condenser 0.24 m² |
| Vacuum Range | 0–100 kPa (absolute) |
| Sealing Leakage Rate | <0.1 kPa/min |
| Power Supply | 220–240 V~, 50/60 Hz |
| Total Power Consumption | 4 kW |
| Dimensions (W×D×H) | 1235 × 650 × 1790 mm |
| Protection Class | IP20 |
| Max. Operating Altitude | ≤2000 m |
| Ambient Operating Conditions | 5–40 °C, ≤70% RH] |
| Brand | Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DL30-2500 |
| Cooling Capacity (W) | 6000 @ 0°C |
| Temperature Range (°C) | −30 to +5 |
| Temperature Stability (°C) | ±2 |
| Ambient Temp. Range (°C) | 5–35 |
| Ambient Humidity (% RH) | ≤70% |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Refrigerant | R404A (non-CFC, ozone-friendly) |
| Reservoir Volume (L) | 40 |
| Pump Flow Rate (L/min) | 30 |
| Max. System Pressure (bar) | 1 |
| External Port Size | 3/4" BSP/Female NPT |
| Reservoir Material | SUS304 stainless steel |
| Dimensions (W×D×H, mm) | 650 × 1055 × 1070 |
| Net Weight (kg) | 195 |
| Compressor | Tecumseh (original imported hermetic piston type) |
| Condenser | Air-cooled finned-tube with oxygen-free copper spiral tubing |
| Evaporator | Fully brazed plate heat exchanger (AISI 316 stainless steel plates, design temp. −160 to +200°C) |
| Dryer-Filter | Danfoss DML series with 3A molecular sieve core |
| Expansion Valve | Danfoss serviceable thermostatic expansion valve (adjustable superheat) |
| Circulation Pump | High-performance stainless steel centrifugal pump (leak-proof at low temperatures) |
| Control System | Microprocessor-based digital controller with Chinese-language UI (fully programmable setpoints, real-time monitoring) |
| Safety Protections | Phase sequence detection, delayed start, overcurrent, overtemperature, ground fault, and high-pressure cut-off |
| Enclosure IP Rating | IP44 |
| System Type | Hermetically sealed closed-loop circulation |
| Integrated Features | Liquid level indicator, system pressure gauge, particulate filter, refrigerant charge monitoring |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic |
| Model | GRF-100 |
| Instrument Classification | Jacketed Glass Reactor |
| Vessel Material | ASTM E438 Type I, Class A 3.3 borosilicate glass |
| Effective Working Volume | 100 L |
| Minimum Agitation Volume | ~5 L |
| Operating Temperature Range | −80 °C to +200 °C |
| Pressure Rating | −0.1 MPa (vacuum) to 0 MPa (atmospheric) |
| Jacket Volume | 25 L |
| Jacket Pressure Limit | ≤0.03 MPa |
| Thermal Shock Resistance | ΔT ≤ 80 °C |
| Vacuum Level | ≤ −0.098 MPa (absolute) |
| Stirring Speed Range | 50–500 rpm |
| Speed Accuracy | ±1 rpm |
| Motor Power | 250 W |
| Drive Type | Three-phase AC inverter-controlled motor |
| Stirring Seal | Vacuum-rated mechanical seal with PTFE components |
| Stirrer Configuration | Triple-layer impeller assembly (four inclined-blade open turbine + two four-flat-blade open turbines) |
| Impeller & Shaft Material | 06Cr19Ni10 (AISI 316L) substrate with full PTFE cladding |
| Bottom Valve Outlet ID | φ21 mm |
| Discharge Port Diameter | φ33 mm |
| Condenser Surface Area | 0.954 m² |
| Condenser Joint Size | 40/38 |
| Constant-Pressure Addition Funnel Capacity | 10,000 mL |
| Solid Feed Port | 95# standard taper (φ338 mm flange) |
| Receiver Flask Capacity | 20,000 mL |
| Frame Construction | Hybrid structure — stainless steel 06Cr19Ni10 base, carbon steel frame with epoxy-polyester powder coating, and anodized aluminum uprights |
| Casters | Locking heavy-duty polyurethane wheels |
| Drip Tray | AISI 316L stainless steel |
| Temperature Sensor | PT100 RTD (IEC 60751 Class B), digital display, ±0.1 °C accuracy |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH (non-condensing) |
| Overall Dimensions (W×D×H) | 1250 × 1000 × 2470 mm |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | GR-5 |
| Instrument Classification | Reactor |
| Volume Class | Small-Scale |
| Operating Pressure | Low-Pressure (Vacuum to Atmospheric) |
| Capacity | 5 L |
| Glass Material | Borosilicate 3.3 |
| Temperature Range | −80 °C to +200 °C |
| Jacket Pressure Rating | ≤ 0.03 MPa |
| Thermal Shock Resistance | 80 °C |
| Stirring Speed Range | 50–500 rpm |
| Speed Accuracy | ±1 rpm |
| Motor Power | 90 W |
| Drive Type | Three-Phase Asynchronous Motor with Frequency Converter Control |
| Sealing System | Vacuum-Compatible Mechanical Seal with PTFE Components |
| Stirrer Configuration | Single-Layer Four-Inclined-Blade Open Turbine |
| Stirrer Shaft & Blades | 06Cr19Ni10 Stainless Steel Core with Full PTFE Cladding |
| Jacket Inlet/Outlet | Rc 3/4 Threaded Fittings with Stainless Steel Insulated Flexible Hoses |
| Condenser Length | 435 mm |
| Condenser Surface Area | ~0.045 m² |
| Condenser Joint Size | 29/32 |
| Dropping Funnel Capacity | 500 mL (29/32 Joint) |
| Temperature Sensor | PT100, Digital Display, ±0.1 °C Accuracy |
| Frame Material | 06Cr19Ni10 Stainless Steel + Powder-Coated Carbon Structural Steel + Powder-Coated Aluminum Alloy |
| Overall Dimensions (W×D×H) | ~650 × 550 × 1600 mm |
| Net Weight | ~34 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Category | Circulating Water Vacuum Pump |
| Model | SHB-IIIG |
| Pump Type | Oil-Free |
| Single-Head Evacuation Rate | 10 L/min |
| Maximum Vacuum | 0.098 MPa (20 mbar) |
| Dimensions (W×D×H) | 385 × 280 × 420 mm |
| Weight | 9.5 kg |
| Motor Power | 180 W |
| Water Tank Capacity | 15 L |
| Circulating Flow Rate | 7 L/min |
| Pump Flow Rate | 80 L/min |
| Lift Head | 10 m |
| Operating Temperature Range | 5–35 °C |
| Relative Humidity Limit | ≤70% |
| IP Rating | IP20 |
| Pollution Degree | Class 2 |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | ZT-20-200-80H |
| Temperature Stability | ±0.5 °C (at 15–65 °C) |
| Temperature Range | −80 to 200 °C |
| Cooling Capacity | 1.7 kW @ 200 °C, 4.3 kW @ 10 °C, 3.1 kW @ −10 °C, 2.3 kW @ −20 °C, 1.2 kW @ −30 °C, 2 kW @ −35 °C, 1.4 kW @ −60 °C, 0.45 kW @ −78 °C |
| Heating Power | 3 kW |
| Total Power Consumption | 7.9 kW |
| Pump Flow Rate | 30 L/min (max), Pressure: 1 bar (max) |
| Bath Volume | 12 L |
| Display | 7″ color TFT touchscreen, resolution 0.01 °C |
| Communication | RS485, USB |
| Refrigerants | R404A + R23 |
| Protection | Overtemperature, high-pressure refrigeration, leakage, phase sequence, thermal overload, overcurrent, compressor delay start |
| Enclosure | Cold-rolled steel with powder coating |
| IP Rating | IP20 |
| Pollution Degree | 2 |
| Dimensions (W×D×H) | 885 × 1315 × 1565 mm |
| Weight | 393 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Standard Accessories | 2.6 m insulated stainless-steel flexible hose |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Category | Domestic |
| Model | SHB-IIIS |
| Instrument Type | Circulating Water Vacuum Pump |
| Product Type | Oil-Free Vacuum Pump |
| Maximum Vacuum | 0.098 MPa |
| Power | 180 W |
| Supply | 220 V~, 50 Hz |
| Circulating Flow Rate | 7 L/min |
| Pump Flow Rate | 80 L/min |
| Single-Head Evacuation Rate | 10 L/min |
| Circulating Head | 10 m |
| Ultimate Pressure | 20 mbar |
| Number of Vacuum Ports | 2 |
| Water Tank Capacity | 15 L |
| Operating Temperature Range | 5–35 °C |
| Relative Humidity Limit | ≤70% |
| IP Rating | IP20 |
| Pollution Degree | Class 2 |
| Dimensions (W×D×H) | 385 × 280 × 420 mm |
| Weight | 9.5 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Instrument Type | Magnetic Stirrer |
| Max. Stirring Volume | 5000 mL |
| Speed Range | 0–2000 rpm |
| Temperature Control Range | Ambient +5°C to 200°C |
| Drive Motor | Brushless DC Motor |
| Magnet Type | High-Temperature Resistant Permanent Magnet |
| Control Method | PID Temperature Regulation |
| Display & Interface | Digital LED Display with Keypad Input |
| Dual-Sensor Capability | Yes (Bath Temperature or Vessel Internal Temperature) |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GR-1-3 |
| Price Range | USD 2,800 – 7,200 (FOB) |
| Usable Volume | 1.0 L (Micro-to-Small Scale) |
| Construction Material | Borosilicate Glass 3.3 |
| Operating Pressure Range | −0.1 to 0.0 MPa (Vacuum to Atmospheric) |
| Jacket Capacity | ~0.3 L |
| Condenser Heat Transfer Area | ~0.025 m² |
| Constant-Pressure Funnel Capacity | 200 mL |
| Vacuum Level | ≤ −0.098 MPa (≤ 2 kPa absolute) |
| Temperature Range | −80 °C to +200 °C |
| Stirring Speed | 50–500 rpm (Infinitely Variable) |
| Stirring Torque | 70 N·cm |
| Stirring Power | 70 W |
| Temperature Sensor | Pt100 (±0.1 °C accuracy) |
| Sealing Material | PTFE |
| Frame Material | SUS304 Stainless Steel |
| Stirrer Shaft & Blades | SUS304 with PTFE coating |
| Stirrer Type | Anchor/Paddle-type with PTFE blades |
| Electrical Supply | 110 V / 60 Hz or 220–240 V / 50–60 Hz |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Overall Dimensions (W×D×H) | ~480 × 420 × 1100 mm |
| 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 |
| Product Category | Domestic |
| Model | DHJF-8002 Vertical |
| Instrument Type | Constant-Temperature Bath |
| Circulation Mode | Internal Circulation |
| Bath Volume | 2 L |
| Temperature Range | −80 °C to +10 °C |
| Temperature Stability | ±2 °C |
| Rated Power | 1020 W |
| Voltage/Frequency | 220 V~, 50 Hz |
| Refrigerants | R404A / R23 |
| Cooling Capacity | 200 W at −40 °C, 120 W at −60 °C, 60 W at −80 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Opening Diameter | Ø140 mm |
| Bath Dimensions | Ø160 × 105 mm (D × H) |
| Max Flask Capacity | 500 mL |
| Bath Material | 304 Stainless Steel |
| Overall Dimensions | 380 W × 450 D × 860 H mm |
| Net Weight | 60 kg |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Safety Protections | Dry-run prevention (heating models), overcurrent, overtemperature, and delayed startup protection |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GRL-50 |
| Price Range | USD 7,000 – 14,000 (FOB) |
| Usable Volume | 50 L (Medium-Scale) |
| Construction Material | Borosilicate Glass 3.3 |
| Operating Pressure Range | −0.1 to 0.0 MPa (Vacuum to Atmospheric) |
| Jacket Pressure Rating | ≤ +0.03 MPa |
| Maximum Vacuum Level | 0.098 MPa (absolute) |
| Temperature Range | −80 °C to +200 °C |
| Temperature Differential Limit (Inner vs. Outer Wall) | ≤ 80 °C |
| Vacuum System Leak Rate | ≤ 2 kPa/h |
| Stirring Motor | 140 W, Three-Phase Asynchronous, Inverter-Controlled |
| Speed Range | 50–500 rpm |
| Speed Display | Digital LED |
| Temperature Sensor | Pt100 (SUS304 sheath, PTFE-insulated) |
| Temperature Display Accuracy | ±0.1 °C |
| Stirrer Type | Anchor/Flat Blade (PTFE-coated blades, SUS304 shaft with full PTFE cladding) |
| Sealing Material | PTFE |
| Drain Valve | Side-Mounted, Zero-Dead-Volume, Corrosion-Resistant |
| Mobility | Lockable Casters |
| Vertical Travel | 400 mm |
| Rotation Capability | 120° tilt |
| Condenser Heat Transfer Area | ~0.42 m² |
| Constant-Pressure Funnel Capacity | 1000 mL |
| Jacket Volume | ~16.0 L |
| Dimensions (W×D×H) | ~860 × 1100 × 2500 mm |
| Power Supply | 220–240 V~, 50/60 Hz |
| Ambient Operating Conditions | 5–35 °C, RH ≤ 70% |
| Brand | Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic Laboratory Refrigeration Equipment |
| Model | DL10-3000G |
| Cooling Capacity | 3000 W (at 25°C ambient, 15°C coolant) |
| Operating Temperature Range | –10°C to 25°C (max. setpoint ≤ ambient – 5°C) |
| Temperature 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 |
| External Port | Rc 1/2 internal thread |
| Power Supply | 220–240 V~, 50 Hz |
| Rated Power | 2200 W |
| Rated Current | 11.7 A |
| 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 temperature readout with integrated level and pressure indicators |
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