The Great Wall
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| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | ZT-5-200-30H (Air-Cooled) |
| Temperature Stability | ±0.5 °C |
| Operating Temperature Range | −30 °C to +200 °C |
| Ambient Temperature Range | 5 °C to 35 °C |
| Ambient Humidity | ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power Consumption | 3 kW |
| Heating Power | 2 kW |
| Refrigerant | R404A |
| Cooling Capacity | 0.6 kW at 200 °C / 0.6 kW at 20 °C / 0.5 kW at 0 °C / 0.4 kW at −10 °C / 0.3 kW at −20 °C / 0.2 kW at −30 °C |
| Circulation Pump Power | 180 W |
| Flow Rate | 25 L/min |
| Maximum Pressure | 1.5 bar |
| External Port Size | 1/2″ BSP |
| Expansion Tank Material | SUS304 |
| Tubing & Valve Material | SUS304 |
| Dimensions (W×D×H) | 420 mm × 650 mm × 860 mm |
| Net Weight | 106 kg |
| Safety Protections | Delayed startup, overcurrent, overtemperature, and high-temperature cutoff |
| Display | LCD touchscreen interface |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | ZT-50-200-40H |
| Temperature Range | −40 °C to +200 °C |
| Temperature Stability | ±0.5 °C |
| Refrigeration Capacity | 31.0 kW at 200 °C, 8.2 kW at 10 °C, 6.2 kW at −10 °C, 4.5 kW at −20 °C, 2.5 kW at −30 °C, 1.0 kW at −35 °C |
| Heating Power | 6 kW |
| Bath Fluid Volume | 13 L |
| Pump Flow Rate | 30 L/min |
| Pump Pressure | 1.0 bar |
| Total Power Consumption | 11.2 kW |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Dimensions (L×W×H) | 1140 × 855 × 1465 mm |
| Display | 5.7″ color TFT touchscreen |
| Control Algorithm | Fuzzy logic + PID |
| Programmable Steps | 120 programs, up to 100 segments per program |
| Communication Interface | RS485 / optional Ethernet |
| Language Support | English & Chinese |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Manufacturer |
| Model | ZT-50-200-80H |
| Temperature Range | −80 °C to 200 °C |
| Temperature Stability | ±0.5 °C |
| Cooling Capacity | 31.0 kW at 200 °C / 1.0 kW at −78 °C |
| Heating Power | 6 kW |
| Circulation Flow Rate | 30 L/min |
| Max Pressure | 4 bar |
| Bath Volume | 17 L |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Dimensions (L×W×H) | 1340 × 885 × 1580 mm |
| Display | 5.7″ TFT Color Touchscreen |
| Control Modes | Constant & Programmable (120 programs × 100 segments) |
| Communication Interface | RS485/Modbus |
| Safety Protections | Overtemperature, overcurrent, overload, leakage, dry-run, low-level, delayed start |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | ZTM-20-200-30 |
| Instrument Type | Integrated Unit |
| Cooling Method | Air-Cooled |
| Temperature Range | −30 °C to +200 °C |
| Temperature Stability | ±0.5 °C (±0.1 °C in selected subranges) |
| Max Pump Pressure | 1.0 bar |
| Pump Flow Rate | 30 L/min |
| Display | 7-inch Color TFT LCD |
| Communication Interfaces | RS485, USB |
| Control Modes | Constant Setpoint, Programmed Setpoint, Ramp Rate (Slope) Control, Programmed Ramp Control |
| Safety Protections | Independent Overtemperature, High-Pressure Compressor, Leakage Current, Compressor Delay Start, Thermal Overload, Overcurrent, Phase Sequence Monitoring |
| Liquid Level Monitoring | Yes |
| Temperature Sensing Options | Material Temperature, Heat Transfer Fluid Outlet Temperature, or Return Temperature |
| Delta-T Control Logic | Enabled |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | ZTM-20-200-40Ex |
| Instrument Type | Integrated Unit |
| Cooling Method | Air-Cooled |
| Temperature Control Range | −40 °C to +200 °C |
| Refrigeration Capacity | 0.25–3 kW |
| Temperature Stability | ±0.5 °C |
| Circulating Pump Pressure | <1.2 bar |
| Circulating Pump Flow Rate | <20 L/min |
| Operating Mode | Continuous |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic |
| Model | GR-10T |
| Price Range | USD 2,800–7,000 (FOB) |
| Usable Volume | 10 L |
| Vessel Material | Borosilicate Glass 3.3 |
| Operating Pressure Range | −0.1 to 0 MPa (gauge) |
| Vacuum Capability | ≤ −0.098 MPa (absolute) |
| Jacket Volume | ~3.0 L |
| Condenser Heat Transfer Area | 0.234 m² |
| Constant-Pressure Dropping Funnel Capacity | 1000 mL |
| Fractionation Column Dimensions | Φ85 × 715 mm |
| Packing | Glass Raschig Rings |
| Number of Ports on Reactor Head | 6 |
| Temperature Range | −80 °C to +200 °C |
| Max Allowable ΔT (Jacket–Vessel) | ≤80 °C |
| Jacket Pressure Rating | ≤ +0.03 MPa |
| Stirring Motor Power | 90 W |
| Speed Control | Frequency Inverter |
| Speed Range | 50–500 rpm |
| Temperature Sensor | Pt100 (SUS304 sheath + PTFE outer sleeve) |
| Temp. Display Accuracy | ±0.1 °C |
| Sealing Material | PTFE |
| Discharge Valve Height from Floor | 320 mm |
| Agitator Type | Anchor-type with PTFE blades |
| Shaft Material | SUS304 + PTFE cladding |
| Frame Material | SUS304 |
| Mobility | Lockable Casters |
| Power Supply | 220–240 V~, 50/60 Hz |
| Ambient Operating Temp. | 5–35 °C |
| Max. Relative Humidity | ≤70% RH |
| Overall Dimensions (W×D×H) | ~1080 × 650 × 2380 mm |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-4005 |
| Price Range | USD 1,400–7,200 |
| 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 |
| Max Pressure | 0.4 bar |
| Ambient Operating Temp | 5–25 °C |
| Power Supply | 220–240 V~, 50 Hz |
| Cooling Capacity | 1000 W at 10 °C / 450 W at −20 °C / 40 W at −40 °C |
| Refrigerant | R404A (high-temp stage) & R23 (low-temp stage) |
| Total Power Consumption | 2450 W |
| Housing Material | Cold-rolled steel with electrostatic epoxy coating |
| External 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 |
| Country of Origin | China |
| Model | DHJF-8002 |
| Price | Upon Request |
| Temperature Range | −80 °C to +10 °C |
| Temperature Stability | ±2 °C |
| Reservoir Volume | 2 L |
| Reservoir Dimensions | Φ160 mm × 105 mm (H) |
| Opening Diameter | Φ140 mm |
| Max Flask Capacity | 500 mL |
| Refrigeration Capacity | 200 W at −40 °C / 120 W at −60 °C / 60 W at −80 °C |
| Refrigerants | R404A & R23 |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power Consumption | 1024 W |
| Cabinet Material | Cold-Rolled Steel with Electrostatic Powder Coating |
| External Dimensions (W×D×H) | 410 × 610 × 495 mm |
| Net Weight | 68 kg |
| Ambient Operating Temperature | 5–25 °C |
| Safety Protections | Compressor Delay Start, Leakage Current Protection, Overcurrent Protection, Overtemperature Protection |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | DLSB-ZC |
| Operating Temperature Range | −10 °C to 25 °C |
| Ambient Temperature Range | 5 °C to 25 °C |
| Temperature Stability | ±2 °C |
| Total Power Consumption | 1650 W |
| Voltage/Frequency | 220–240 V~, 50 Hz |
| Reservoir Capacity | 20 L |
| Refrigeration Capacity | 600–2550 W |
| Circulation Pump Power | 280 W |
| Rated Flow Rate | 30 L/min |
| Maximum Pressure | 1.0 bar |
| Ultimate Vacuum | 0.098 MPa (20 mbar) |
| Number of Vacuum Ports | 3 |
| Single-Port Pumping Speed | 10 L/min |
| Dimensions (W×D×H) | 595 × 475 × 925 mm |
| Evaporator Material | Stainless Steel (06Cr19Ni10) |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DLSB-ZC |
| Cooling Temperature Range | -10 °C to 25 °C |
| Ambient Operating Temperature | 5 °C to 25 °C |
| Temperature Stability | ±2 °C |
| Total Power Consumption | 1650 W |
| Voltage/Frequency | 220–240 V~, 50 Hz |
| Reservoir Capacity | 20 L |
| Refrigeration Capacity | 600–2550 W |
| Circulation Pump Power | 280 W |
| Rated Flow Rate | 30 L/min |
| Maximum Pressure Output | 1.0 bar |
| Ultimate Vacuum | 0.098 MPa (2 kPa) |
| Number of Vacuum Ports | 3 |
| Single-Port Evacuation Rate | 10 L/min |
| Dimensions (W×D×H) | 595 mm × 475 mm × 925 mm |
| Evaporator Material | Stainless Steel |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GR-10T |
| Price Range | USD 7,000–14,000 (FOB) |
| Usable Volume | 10 L |
| Vessel Material | High-Borosilicate Glass 3.3 (DIN ISO 3585) |
| Operating Pressure Range | –0.1 to 0 MPa (gauge) |
| Jacket Volume | ~3.0 L |
| Condenser Heat Transfer Area | 0.234 m² |
| Constant-Pressure Dropping Funnel Capacity | 1000 mL |
| Distillation Column Dimensions | Ø85 × 715 mm |
| Packing | Glass Raschig Rings |
| Number of Ports on Reactor Head | 6 |
| Temperature Range | –80 °C to +200 °C |
| Maximum ΔT (Jacket–Vessel) | ≤80 °C |
| Jacket Pressure Rating | ≤+0.03 MPa |
| Stirring Motor | 90 W Three-Phase Asynchronous Motor with Frequency Converter |
| Speed Range | 50–500 rpm |
| Temperature Sensor | Pt100 (±0.1 °C accuracy), SUS304 sheath with PTFE outer sleeve |
| Sealing Material | PTFE |
| Bottom Discharge Valve Height | 320 mm above floor |
| Stirrer Type | Anchor/Paddle with PTFE-coated blades, SUS304 shaft with full PTFE cladding |
| Frame Material | SUS304 Stainless Steel |
| Mobility | Lockable Casters |
| Power Supply | 220–240 V~, 50/60 Hz |
| Ambient Operating Conditions | 5–35 °C, RH ≤70% |
| Overall Dimensions (W×D×H) | ~1080 × 650 × 2380 mm |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GR-2 |
| Reactor Type | Jacketed Glass Reactor |
| Working Volume | 2 L |
| Minimum Stirring Volume | ~0.2 L |
| Vessel Material | Borosilicate Glass 3.3 |
| Operating Pressure Range | –0.1 MPa to 0 MPa (vacuum to atmospheric) |
| Jacket Pressure Rating | ≤0.03 MPa |
| Temperature Range | –80 °C to +200 °C |
| Thermal Shock Resistance | 80 °C |
| Stirring Speed Range | 40–500 rpm |
| Speed Accuracy | ±1 rpm |
| Motor Type | Brushless DC |
| Motor Power | 50 W |
| Stirrer Shaft Material | 06Cr19Ni10 stainless steel with PTFE coating |
| Impeller Material | PTFE-coated 06Cr19Ni10 |
| Sealing System | Vacuum-rated mechanical seal with PTFE/PEEK/glass support components |
| Flange Diameter | 105 mm |
| Top Port Configuration | Five ports (one 24/40 central, three 24/40 side, one 19/26) |
| Bottom Valve Outlet | φ10 mm internal diameter, φ20 mm discharge port |
| Jacket Inlet/Outlet | Rc 3/4 and Rc 1/2 threaded connections |
| Condenser Length | 326 mm |
| Condenser Surface Area | 0.025 m² |
| Drip Funnel Capacity | 200 mL (24/29 joint) |
| Temperature Sensor | PT100, ±0.1 °C accuracy |
| Display | Digital LED for speed and temperature |
| Power Supply | Stirrer: 100–240 V~, 50/60 Hz |
| Control Box | 220–240 V~, 50/60 Hz |
| Dimensions (W×D×H) | ~480 × 420 × 1100 mm |
| Net Weight | ~20 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GR-20T |
| Price Range | USD 2,800 – 7,000 (FOB) |
| Vessel Capacity | 20 L |
| Jacket Capacity | ~6 L |
| Operating Pressure Range | −0.1 to 0.0 MPa (gauge) |
| Vacuum Level | −0.098 MPa |
| Temperature Range | −80 °C to +200 °C |
| Temperature Sensor | Pt100 (±0.1 °C accuracy) |
| Stirring Speed | 50–500 rpm (variable-frequency control) |
| Motor Power | 90 W |
| Construction Material | Borosilicate Glass 3.3 (DIN ISO 3585), SUS304 stainless steel frame, PTFE-coated components |
| Condenser Heat Transfer Area | 0.249 m² |
| Reflux Column | Φ85 × 700 mm with Raschig ring packing |
| Constant-Pressure Dropping Funnel | 2000 mL |
| Number of Standard Ports on Lid | 6 |
| Floor Clearance for Bottom Valve | ~320 mm |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Origin Category | Domestic |
| Model | GRL-20 |
| Instrument Classification | Glass Reactor |
| Usable Volume | Medium-Scale |
| Construction Material | Borosilicate Glass 3.3 |
| Operating Pressure Range | -0.1 MPa to 0.0 MPa |
| Capacity | 20 L |
| Temperature Range | -80 °C to 200 °C |
| Vessel Mobility | Vertical Lift + 120° Rotation |
| Sealing System | Custom-Engineered PTFE-Coated Magnetic Drive Bearing |
| Stirring Assembly | PTFE Blades + SS304 Shaft with Full PTFE Cladding |
| Frame Material | 06Cr19Ni10 Stainless Steel + Powder-Coated Carbon Steel + Anodized Aluminum |
| Mobility | Locking Casters with Brake Mechanism |
| Jacket Connection | Stainless Steel Insulated Flexible Hoses |
| Discharge Valve | Top-Mounted Angled Drain Valve |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HX-1005 |
| Price Range | USD 1,400–7,000 |
| Reservoir Volume | 5 L |
| Temperature Stability | ±0.05 °C |
| Operating Temperature Range | −5 to 99 °C |
| Refrigeration Capacity | 190–375 W |
| Refrigerant | R134a |
| Flow Rate | 10 L/min |
| Opening Dimensions | 170 W × 360 D × 145 H mm |
| Heating Power | 1200 W |
| External Dimensions | 250 W × 465 D × 650 H mm |
| Net Weight | 32 kg |
| Power Supply | 220–240 V~, 50 Hz |
| Tank Material | 304 Stainless Steel |
| Compressor Type | Hermetic Air-Cooled (Imported from USA/France) |
| Pump Configuration | Dual-Impeller with Self-Priming Function |
| Temperature Control Method | PID Algorithm |
| Display | Digital LED |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | HX-1005 |
| Price Range | USD 1,400–7,200 |
| Reservoir Volume | 5 L |
| Temperature Stability | ±0.05 °C |
| Operating Temperature Range | –5 to 99 °C |
| Refrigeration Capacity | 190–375 W |
| Heating Power | 1200 W |
| Circulation Flow Rate | 10 L/min |
| Pump Type | Dual-impeller, self-priming |
| Compressor | Hermetic air-cooled unit (imported from USA/France) |
| Refrigerant | R134a |
| Bath Material | 304 Stainless Steel |
| Display | Digital LED |
| Control Method | PID temperature control |
| Power Supply | 220–240 V~, 50 Hz |
| External Dimensions (W×D×H) | 250 × 465 × 650 mm |
| Bath Opening (W×D×H) | 170 × 360 × 145 mm |
| Net Weight | 32 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Equipment Type | Integrated Circulating Chiller |
| Temperature Range | −80 °C to −40 °C |
| Cooling Capacity | 1000 W (at −80 °C) / 3000 W (at −60 °C) / 5000 W (at −40 °C) |
| Temperature Stability | ±2 °C |
| Circulation Pump Pressure | 1 bar |
| Flow Rate | 30 L/min |
| Power Consumption | 9800 W |
| Rated Current | 17.5 A |
| Refrigerants | R404A & R23 |
| Reservoir Volume | 10 L |
| Reservoir Material | SUS304 Stainless Steel |
| Dimensions (W×D×H) | 710 × 1230 × 1380 mm |
| Net Weight | 350 kg |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Sensor Type | Pt100 |
| External Port | Rc 1/2 internal thread |
| Fill Opening Diameter | Ø60 mm |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | MP-201Z |
| Pump Type | Diaphragm Vacuum Pump |
| Lubrication | Oil-Free |
| Ultimate Vacuum | 8 mbar (0.0992 MPa) |
| Pumping Speed | 25 L/min |
| Motor Power | 180 W |
| Input Voltage/Frequency | 220–240 V~, 50 Hz |
| Motor Speed | 1300 rpm |
| Inlet Port Diameter | Ø6 mm |
| Dimensions (W×D×H) | 300 × 230 × 170 mm |
| Net Weight | 10 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | R-1050EX |
| Capacity | 50 L |
| Ultimate Vacuum | ≤2 kPa/h (down to 100 Pa with compatible vacuum pump) |
| Rotational Speed | 20–110 rpm |
| Temperature Control Range | Ambient +5°C to 95°C |
| Temperature Accuracy | ±1.5°C |
| Condensing Area | Primary Condenser 1.150 m², Auxiliary Condenser 0.607 m² |
| Heating Power | 6000 W |
| Total Rated Power | 6300 W |
| Motor Power | 370 W |
| Cooling Method | Vertical Dual-Stage Condenser with Triple-Return Design |
| Rotation Bottle | 50 L, Flange Diameter Φ125 mm |
| Collection Flask | 20 L |
| Bath Material | SUS304 Stainless Steel (Φ550 × 320 mm) |
| Lift Mechanism | Manual, 0–180 mm Travel |
| Sealing Technology | PTFE + Fluorinated Rubber Dual-Seal |
| Feed/Discharge Valve | PTFE-Core |
| Evaporation Rate | ~9.0 L/h (Water), ~24.5 L/h (Ethanol) |
| Safety Protections | Overcurrent, Ground Fault, Overtemperature |
| Ambient Operating Conditions | 5–35°C, ≤65% RH |
| Power Supply | 3-phase, 380 V, 50 Hz |
| Dimensions (mm) | Main Unit 1345 W × 770 D × 2230 H |
| Weight | Main Unit 200 kg, Control Cabinet 58 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DHJF-1010 |
| Quotation | Upon Request |
| Cooling Capacity | 160 W at −60 °C, 70 W at −80 °C, 40 W at −100 °C |
| Bath Volume | 10 L |
| Temperature Range | −100 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Control Resolution | 0.1 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Rated Power | 2050 W |
| Bath Material | 304 Stainless Steel |
| External Dimensions (W×D×H) | 670 × 780 × 1085 mm |
| Net Weight | 150 kg |
| 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 Internal Dimensions | Ø250 × 250 mm |
| Max Flask Capacity | 3000 mL |
| Safety Protections | Delayed Start, Overcurrent, Overtemperature |
| 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-1210 |
| Quotation | Upon Request |
| Cooling Capacity | 160 W at −60 °C, 70 W at −80 °C, 40 W at −100 °C, 20 W at −120 °C |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 10 L |
| Temperature Display Resolution | 0.1 °C |
| Magnetic Stirring Power | 50 W |
| Stirring Speed | 100–1000 rpm |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Compressor | Hermetic Piston-Type (Tecumseh/TaiKang) |
| Condenser | Air-Cooled with Oxygen-Free Copper Finned Tube |
| Heat Exchanger | Series-Connected Single-Stage Subcooling System |
| Throttling Device | Capillary Tube |
| Evaporator | Coil-Type Immersed in Bath |
| Bath Material | AISI 304 Stainless Steel |
| External Dimensions (W×D×H) | 670 × 780 × 1085 mm |
| Net Weight | 154 kg |
| Power Supply | 220–240 V~, 50 Hz |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Safety Protections | Delayed Start, Overcurrent, Overtemperature |
| Drain Port | 1/2″ BSP |
| Bath Opening Diameter | Ø210 mm |
| Bath Internal Dimensions | Ø250 × 250 mm |
| Max Flask Capacity | 3000 mL |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | DHJF-1250 |
| Quotation | Upon Request |
| Refrigerant | Mixed Cryogenic Refrigerant |
| Temperature Range | −120 °C to −60 °C |
| Temperature Stability | ±2 °C |
| Bath Volume | 50 L |
| Refrigeration Capacity | 700 W at −60 °C / 580 W at −80 °C / 420 W at −100 °C / 125 W at −120 °C |
| Circulation 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 |
| Bath Material | 304 Stainless Steel |
| Max. Flask Capacity | 20,000 mL |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Safety Protections | Phase sequence, overcurrent, overheat, and delayed startup protection |
| Note | External circulation must be disabled when bath temperature < −90 °C |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | DLSB-5/20 |
| Price | USD 1,080 (FOB Zhengzhou) |
| Empty-Load Minimum Temperature | -20 °C |
| Operating Temperature Range | -20 °C to +25 °C |
| Reservoir Capacity | 5 L |
| Temperature Stability | ±2 °C |
| Temperature Sensor | Pt100 |
| Display Resolution | 0.1 °C |
| Communication Interface | RS485 with Modbus RTU Protocol |
| Refrigerant | R404A |
| Cooling Capacity (W) | 680 @ 10 °C |
| Pump Max Flow Rate | 22 L/min |
| Pump Max Pressure | 1.1 bar |
| IP Rating | IP20 |
| Ambient Operating Temp | 5–35 °C |
| Max Relative Humidity | ≤70% RH |
| Power Supply | 220 V~, 50 Hz |
| Fluid Port Size | 1/2″ BSP |
| Tubing Compatibility | Silicone Rubber Hose (Φ13×Φ9 mm) |
| Reservoir Material | AISI 304 Stainless Steel |
| Dimensions (W×D×H) | 335×473×684 mm |
| Net Weight | 40 kg |
| CE Certification | TÜV-certified (selected models) |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | VT-40x |
| Cooling Medium | R404A |
| Minimum No-Load Temperature | −40 °C |
| Refrigeration Capacity | 300 W at −10 °C, 250 W at −20 °C, 150 W at −30 °C, 50 W at −35 °C |
| Trap Chamber Dimensions | Ø160 × 250 mm |
| Chamber Material | 06Cr19Ni10 (AISI 304 stainless steel) |
| Vacuum Port | KF25 |
| Temperature Sensor | Pt100 |
| Display | Digital LED |
| Temperature Setting Range | Adjustable within operational range |
| Safety Protections | Delayed start, overcurrent protection, overtemperature cutoff, high-pressure shutdown |
| Ambient Operating Conditions | 5–35 °C, ≤70% RH |
| Power Supply | 220 V~, 50 Hz |
| Total Power Consumption | 530 W |
| Input Current | 2.9 A |
| Unit Dimensions (W×D×H) | 388 × 454 × 780 mm |
| Net Weight | 48 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | VT-40x Water Vapor Trap |
| Price | Upon Request |
| Minimum No-Load Temperature | −40 °C |
| Cooling Method | Direct Contact Cooling |
| Temperature Display | Digital (Pt100 Sensor) |
| Temperature Setting Range | Adjustable Within Operational Range |
| Safety Protections | Delay Start, Overcurrent, Overheat, High-Pressure Cut-off |
| Refrigeration Capacity | 300 W at −10 °C, 250 W at −20 °C, 150 W at −30 °C, 50 W at −35 °C |
| Refrigerant | R404A |
| Trap Chamber Dimensions | Ø160 mm × 250 mm |
| Chamber Material | 06Cr19Ni10 (AISI 304 Stainless Steel) |
| Vacuum Port Interface | KF25 |
| Ambient Operating Temperature | 5–35 °C |
| Max. Relative Humidity | ≤70% RH |
| Total Power Consumption | 530 W |
| Rated Current | 2.9 A |
| Power Supply | 220 V~, 50 Hz |
| Overall Dimensions (W×D×H) | 388 × 454 × 780 mm |
| Net Weight | 48 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | ZT-5-200-30 |
| Quotation | Upon Request |
| Temperature Stability (Reactor) | ±0.5 °C |
| Operating Temperature Range | −30 °C to +200 °C |
| Ambient Temperature Range | 5 °C to 35 °C |
| Ambient Humidity | ≤70% RH |
| Power Supply | 220–240 V~, 50 Hz |
| Safety Protections | Delayed Start, Overcurrent, Overheat, and Overshoot Protection |
| Total Power Consumption | 3 kW |
| Heating Power | 2 kW |
| Refrigerant | R404A |
| Cooling Capacity | 0.6 kW @ 200 °C, 0.6 kW @ 20 °C, 0.5 kW @ 0 °C, 0.4 kW @ −10 °C, 0.3 kW @ −20 °C, 0.2 kW @ −30 °C |
| Circulation Pump Power | 180 W |
| Flow Rate | 25 L/min |
| Max. System Pressure | 1.5 bar |
| External Port Size | 1/2″ BSP |
| Expansion Tank Material | SUS304 |
| Fluid Lines & Valves Material | SUS304 |
| Unit Dimensions (W×D×H) | 420 mm × 650 mm × 860 mm |
| Net Weight | 106 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| Model | ZT-20-200-30 |
| Temperature Range | −30 °C to 200 °C |
| Temperature Stability | ±0.5 °C |
| Power Supply | 220–240 V~, 50 Hz |
| Total Power | 4.7 kW |
| Heating Power | 3 kW |
| Cooling Capacity | 1.7 kW @ 200 °C, 2.6 kW @ 10 °C, 1.1 kW @ −10 °C, 0.7 kW @ −20 °C, 0.3 kW @ −30 °C |
| Refrigerant | R22 |
| Bath Fluid Volume | 10 L |
| Pump Flow Rate | 30 L/min |
| Pump Pressure | 1 bar |
| Dimensions (W×D×H) | 580 × 825 × 1370 mm |
| Net Weight | 172 kg |
| Brand | The Great Wall |
|---|---|
| Origin | Henan, China |
| Manufacturer Type | Direct Manufacturer |
| 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 |
| Heating Power | 3 kW |
| Cooling Capacity | 1.7 kW @ 200 °C |
| Refrigerant | R22 |
| Bath Fluid Volume | 10 L |
| Pump Flow Rate | 30 L/min |
| Pump Pressure | 1 bar |
| Dimensions (W×D×H) | 580 × 825 × 1370 mm |
| Weight | 172 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 |