Empowering Scientific Discovery

Shanghai Zhetu Scientific Instrument Co., Ltd.

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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-D100-I
Temperature Range-80 °C to +120 °C
Cooling MethodHermetic Compressor-Based Refrigeration
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Interior Dimensions (W×D×H)500 × 400 × 500 mm
Interior Volume100 L
Control Interface7-inch Full-Color TFT Touchscreen
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-B225-II
Temperature Range-40 °C to +150 °C
Refrigeration MethodCompressor-based Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Interior Dimensions (W×D×H)600 mm × 500 mm × 750 mm
Control InterfaceFull-color Touchscreen with Multi-level User Permissions
Data LoggingReal-time Export to Excel & Graphical Reports
CommunicationRS485/USB (standard), Optional Cloud & Mobile APP Integration
Safety ProtectionsOver-temperature, Compressor/Fan Overload, Leakage Current, Auto Power Cut-off
ConstructionStainless Steel Interior, Electrostatically Powder-Coated Exterior, Double-Layer Heated Observation Window
ComplianceDesigned to support ASTM D4329, ISO 4892-2, IEC 60068-2-1, IEC 60068-2-2, MIL-STD-810G (thermal cycling profiles)
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-A400-II
Temperature Range-20 °C to +150 °C
Refrigeration MethodCompressor-based Cooling
Explosion-Proof DesignStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating RateAdjustable, 1–3 °C/min (average)
Cooling RateAdjustable, 0.7–1 °C/min (average)
Internal Chamber Dimensions800 × 600 × 850 mm (W×D×H)
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-C225-I
Temperature Range−60 °C to +120 °C
Refrigeration MethodCompressor-based Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Interior Dimensions (W×D×H)600 × 500 × 750 mm
Cabinet ConstructionStainless Steel Interior, Electrostatically Powder-Coated Exterior
Control System7-inch Color Touchscreen with PID Auto-Tuning
Programmability1000 Programs, 100 Segments per Program
Data LoggingReal-time Export to Excel, Graphical Trend Reports
Remote AccessWeb Browser, Mobile App (iOS/Android), Multi-user Concurrent Access (Up to 10 Accounts)
Safety ProtectionsOvertemperature Cut-off, Compressor/Fan Overload Protection, Leakage Current Protection, Power Failure Recovery
Optional InterfacesRS485, USB, Standard Test Port (Φ50 mm)
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-C225-II
Temperature Range-60 °C to +150 °C
Refrigeration MethodCompressor-based Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (Adjustable)
Cooling Rate0.7–1 °C/min (Adjustable)
Interior Dimensions (W×D×H)600 × 500 × 750 mm
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Product CategoryDomestic
ModelDRH-100CL
Instrument TypeBenchtop
Cooling MethodAir-Cooled
Temperature Range−10 °C to +65 °C
Humidity Range20–95 %RH
Temperature Uniformity±0.5 °C
Humidity Deviation±3 %RH
Interior Dimensions (W×D×H)450 mm × 380 mm × 590 mm
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-D150-II
Temperature Range-80 °C to +150 °C
Cooling MethodHermetic Compressor-Based Refrigeration
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (Adjustable)
Cooling Rate0.7–1 °C/min (Adjustable)
Interior Dimensions (W×D×H)500 mm × 500 mm × 600 mm
Control InterfaceColor Touchscreen Controller with Multi-Stage Programmability
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-C150-I
Temperature Range-60 °C to +120 °C
Refrigeration MethodHermetic Compressor-Based Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (Adjustable)
Cooling Rate0.7–1 °C/min (Adjustable)
Interior Dimensions (W×D×H)500 mm × 500 mm × 600 mm
Control InterfaceColor Touchscreen with Multi-Program Capability
Power SupplyAC 220 V / 50 Hz or AC 380 V / 50 Hz
Input Power6000 W / 7000 W (Dual Voltage Configurable)
Safety ProtectionsOver-Temperature, Over-Current, Compressor/Fan Overload, Leakage Current, Auto-Power-Off on Alarm
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-C100-I
Temperature Range−60 °C to +120 °C
Cooling MethodHermetic Compressor-Based Refrigeration
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Internal Chamber Dimensions500 × 400 × 500 mm (W × D × H)
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Product CategoryDomestic
ModelDW-300CB
Temperature Range−40 °C to +65 °C
Temperature Uniformity & Fluctuation±0.5 °C
Cooling Rate0.7–1 °C/min
Heating Rate1–3 °C/min
Temperature Resolution0.1 °C
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Product CategoryDomestic
ModelZHS-100HC
Instrument TypeUpright
Condensation MethodAir-Cooled
Temperature Range0–65 °C
Humidity Range40–95 %RH
Temperature Uniformity±1 °C
Temperature Fluctuation±0.5 °C (high-temp), ±1 °C (low-temp)
Humidity Uniformity±3 %RH
Humidity Fluctuation±3 %RH
Heating Rate1–3 °C/min
Interior Dimensions (W×D×H)450×380×590 mm
Power SupplyAC 220 V, 50 Hz
Rated Power1400 W
Net Volume100 L
Shelf Capacity2 adjustable stainless-steel shelves
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-B225-II
Temperature Range-40 °C to +150 °C
Refrigeration MethodHermetic Compressor Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Interior Dimensions (W×D×H)600 × 500 × 750 mm
Control InterfaceColor Touchscreen with 1000 Programmable Profiles (100 Segments per Profile)
ComplianceDesigned for ASTM D3574, ISO 16750-4, IEC 60068-2-1/2/14, MIL-STD-810H environmental stress screening protocols
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-C800-II
Temperature Range−60 °C to +120 °C
Cooling MethodCompressor-Based Refrigeration
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Internal Chamber Dimensions1000 × 800 × 1000 mm (W × D × H)
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-C150-II
Temperature Range-60 °C to +150 °C
Refrigeration MethodHermetic Compressor Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (Adjustable)
Cooling Rate0.7–1 °C/min (Adjustable)
Interior Dimensions (W×D×H)500 mm × 500 mm × 600 mm
Control InterfaceColor Touchscreen with Multi-Program Capability
Power SupplyAC 220 V / 380 V, 50 Hz
Safety ProtectionsOver-Temperature, Over-Current, Compressor/Fan Overload, Leakage Current Protection
ComplianceDesigned for ASTM D4329, ISO 4892-2, IEC 60068-2-1, IEC 60068-2-2, MIL-STD-810G (Temperature Cycling), and GLP/GMP-aligned operational logging
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Region of OriginDomestic (China)
ModelSEH-55
Instrument TypeBenchtop
Cooling MethodAir-Cooled
Temperature Range0–80 °C
Humidity Range30–98 %RH
Temperature Uniformity±0.5 °C
Humidity Deviation±3–5 %RH
Interior Dimensions (W×D×H)320 × 400 × 430 mm
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-C400-I
Temperature Range−60 °C to +120 °C
Cooling MethodCompressor-Based Refrigeration
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2.0 °C
Temperature Deviation±2.0 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Internal Chamber Dimensions (W×D×H)800 × 600 × 850 mm
Power SupplyAC 380 V / 50 Hz
Rated Input Power6.0–7.0 kW
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-D225-II
Temperature Range-80 °C to +150 °C
Refrigeration MethodHermetic Compressor Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (Adjustable)
Cooling Rate0.7–1 °C/min (Adjustable)
Interior Dimensions (W×D×H)600 mm × 500 mm × 750 mm
Control InterfaceColor Touchscreen with Multi-Program Capability
Power SupplyAC 220 V / 380 V, 50 Hz
Input Power6000 W / 6800 W
Safety ProtectionsOver-Temperature, Over-Current, Compressor/Fan Overload, Leakage Protection
ComplianceDesigned for ASTM D3574, ISO 16750-4, IEC 60068-2-1, IEC 60068-2-2, MIL-STD-810G (Temperature Variation), and GLP/GMP-aligned data integrity practices
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-C1000-II
Temperature Range-60 °C to +150 °C
Refrigeration MethodCompressor-based Cooling
Explosion-Proof DesignStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Interior Dimensions (W×D×H)1000 mm × 1000 mm × 1000 mm
Power SupplyAC 380 V / 50 Hz
Control InterfaceFull-color TFT Touchscreen with Multi-level User Permissions
Data LoggingReal-time Excel export & graphical trend analysis
CommunicationRS485/USB standard
Safety ProtectionsOver-temperature cut-off, compressor/fan overload protection, leakage current interruption, auto-restart after power recovery
ConstructionStainless steel interior, electrostatically coated outer shell, double-layer heated anti-fog viewing window, silicone door gasket, centrifugal forced-air circulation with PID auto-tuning
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-D100-II
Temperature Range-80 °C to +150 °C
Cooling MethodCompressor-based Refrigeration
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2.0 °C
Temperature Deviation±2.0 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Internal Chamber Dimensions500 × 400 × 500 mm (W × D × H)
Chamber Volume100 L
Humidity Range30–95 %RH (standard)
Humidity Deviation±3–5 %RH
Power SupplyAC 220 V / 50 Hz or AC 380 V / 50 Hz
Input Power5500 W (typical)
Control SystemFull-color TFT touchscreen with programmable logic controller (PLC) architecture
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-C150
Temperature Range−60 °C to +120 °C
Refrigeration MethodCompressor-based Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Interior Dimensions (W×D×H)500 × 500 × 600 mm
Control InterfaceFull-color Touchscreen with Programmable Logic
Humidity Range20–98% RH
Humidity Deviation±3–5% RH
Power SupplyAC 220 V
Input Power5500 W
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
Region of OriginDomestic (China)
ModelDRH-50-N20
Instrument TypeBenchtop
Cooling MethodAir-Cooled
Temperature Range−20 °C to 120 °C
Humidity Range20–98 % RH
Temperature Uniformity±0.5 °C
Humidity Deviation±3–5 % RH
Interior Dimensions (W×D×H)360 mm × 350 mm × 400 mm
Nominal Volume50 L
Control InterfaceColor Touchscreen LCD
Programmability30-Stage Ramp/Soak Profile
Power SupplyAC 220 V / 50 Hz
Standard PortsRS485, Φ25 mm Access Port (Left Side)
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-A500
Refrigeration MethodCompressor-based Cooling
Temperature Range−20 °C to +120 °C
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2.0 °C
Heating Rate≤60 min (from −20 °C to +120 °C)
Cooling Rate≤60 min (from +120 °C to −20 °C)
Internal Chamber Dimensions (W×D×H)800 mm × 700 mm × 900 mm
Volume500 L
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHL-A500
Temperature Range−20 °C to +120 °C
Refrigeration MethodHermetic Compressor Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity±2.0 °C
Temperature Deviation±2.0 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Interior Dimensions (W×D×H)800 × 700 × 900 mm
Power SupplyAC 220 V
Input Power5500 W
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BrandDRETOP
OriginShanghai, China
Manufacturer TypeDirect Manufacturer
ModelTHS-C400-II
Temperature Range-60 °C to +150 °C
Refrigeration MethodCompressor-Based Cooling
Explosion-ProofStandard (Non-Explosion-Proof)
Temperature Fluctuation±0.5 °C
Temperature Uniformity≤2.0 °C
Temperature Deviation±2.0 °C
Heating Rate1–3 °C/min (adjustable)
Cooling Rate0.7–1 °C/min (adjustable)
Internal Chamber Dimensions (W×D×H)800 × 600 × 850 mm
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