{"product_id":"meling-biomedical-dw-hl780-40-c-to-86-c-dual-cooling-upright-ultra-low-temperature-freezer-780-l","title":"Meling Biomedical DW-HL780 −40°C to −86°C Dual-Cooling Upright Ultra-Low Temperature Freezer 780 L","description":"\u003ch1\u003eMeling Biomedical DW-HL780 −40°C to −86°C Dual-Cooling Upright Ultra-Low Temperature Freezer 780 L\u003c\/h1\u003e\n\u003cp\u003eThe Meling Biomedical DW-HL780 is a 780 L upright ultra-low temperature freezer engineered for long-term storage of temperature-sensitive biological materials between −40°C and −86°C. Its dual-cooling architecture uses two independent inverter-driven refrigeration systems to provide an additional level of protection for critical sample collections. A 10-inch intelligent touchscreen, stainless-steel interior, vacuum-insulated cabinet construction, biometric access control, local temperature data logging, and comprehensive alarm protection support demanding workflows in biobanks, hospitals, pharmaceutical facilities, research laboratories, and other professional environments.\u003c\/p\u003e\n\u003ch3\u003eCertifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCE marked\u003c\/strong\u003e for applicable European requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMDR certified\u003c\/strong\u003e for applicable European medical-device requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCE 61010 compliant\u003c\/strong\u003e — conforms to IEC\/EN 61010 safety requirements for electrical equipment used in laboratory, measurement, and control applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUL certified\u003c\/strong\u003e for applicable United States safety requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ecUL certified\u003c\/strong\u003e for applicable Canadian safety requirements\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe microprocessor controller and 10-inch HD intelligent touchscreen provide clear access to cabinet temperature, system status, alarm conditions, and stored records. Two independent inverter-driven compressors regulate refrigeration output according to system demand, while direct cooling, hydrocarbon refrigerants, vacuum-insulated panels, and substantial cabinet insulation support controlled operation down to −86°C.\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e780 L \/ 27.5 cu. ft. storage capacity\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAdjustable operating range from −40°C to −86°C\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTwo independent refrigeration systems\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTwo inverter-driven compressors\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRedundant dual-cooling architecture\u003c\/strong\u003e for enhanced sample protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e10-inch HD intelligent touchscreen\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMicroprocessor temperature controller\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDirect-cooling refrigeration system\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManual defrost\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHydrocarbon refrigerants\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVacuum-insulated panel construction\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStainless-steel interior\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThree stainless-steel shelves\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInsulated inner doors\u003c\/strong\u003e to reduce heat entry during routine access\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eErgonomic door handle\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCard and fingerprint access control\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHeated vacuum-relief port\u003c\/strong\u003e to assist with door reopening\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBuilt-in USB temperature data logger\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature recording every five minutes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLocal record retention for up to ten years\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRS485 communication interface\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRemote alarm contact\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackup battery for continued local monitoring and alarm operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eThree 25 mm access ports\u003c\/strong\u003e for independent probes or compatible monitoring equipment\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCircuit breaker\u003c\/strong\u003e for electrical protection\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFour heavy-duty casters and two leveling feet\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpecified capacity for up to 24 freezer racks and 600 standard storage boxes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTemperature Performance\u003c\/h3\u003e\n\u003cp\u003eThe DW-HL780 is built around two independent refrigeration systems. The manufacturer states that if one refrigeration system becomes unavailable, the remaining system can continue maintaining the cabinet at approximately −80°C under specified operating conditions.\u003c\/p\u003e\n\u003cp\u003eManufacturer internal testing also reports:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eTemperature recovery of approximately \u003cstrong\u003e40 minutes\u003c\/strong\u003e after the door has been opened for one minute\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePull-down time to −80°C of approximately \u003cstrong\u003e280 minutes\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDaily energy consumption of approximately \u003cstrong\u003e8.5 kWh\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese figures are based on manufacturer internal testing with the freezer set to −80°C and operated at an ambient temperature of 25°C. Actual performance may vary depending on cabinet loading, ambient conditions, installation, ventilation, voltage, initial product temperature, door-opening frequency, and individual unit configuration.\u003c\/p\u003e\n\u003cp\u003eThe redundant refrigeration design provides additional response time and sample protection compared with a conventional single-system freezer. Independent facility monitoring and an established emergency-transfer plan should still be maintained for critical or irreplaceable materials.\u003c\/p\u003e\n\u003ch3\u003eComprehensive Alarm Protection\u003c\/h3\u003e\n\u003cp\u003eThe integrated alarm system provides visual and audible notification for conditions including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh cabinet temperature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow cabinet temperature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh ambient temperature\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePower failure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow backup-battery level\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eTemperature-sensor error\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eBackup-battery power-detection failure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLocal data-communication failure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDoor-ajar condition\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA\/B refrigeration-system fault\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThese alarms help personnel identify temperature excursions, power interruptions, prolonged door openings, refrigeration-system faults, and monitoring-system conditions promptly.\u003c\/p\u003e\n\u003ch3\u003eLocal Temperature Data Management\u003c\/h3\u003e\n\u003cp\u003eThe integrated data logger records cabinet temperature locally at five-minute intervals and supports retention of up to ten years of historical records. Authorized users can export stored information directly through the USB port for audits, quality-control procedures, documentation, and local recordkeeping.\u003c\/p\u003e\n\u003cp\u003eThe RS485 interface and remote alarm contact can connect the freezer to compatible on-site monitoring equipment, alarm panels, or building-management systems without requiring an internet connection.\u003c\/p\u003e\n\u003ch3\u003ePrivacy-Focused Offline Operation\u003c\/h3\u003e\n\u003cp\u003eInternet connectivity, cloud communication, and external manufacturer-server data collection are disabled to support institutional privacy, cybersecurity, and data-governance requirements.\u003c\/p\u003e\n\u003cp\u003eTemperature and alarm records remain stored locally within the freezer and can be accessed or exported directly through the integrated USB data logger. RS485 communication and remote alarm-contact functionality remain available for compatible on-site systems.\u003c\/p\u003e\n\u003ch3\u003eDesigned for High-Volume, High-Value Storage\u003c\/h3\u003e\n\u003cp\u003eThe DW-HL780 accommodates a specified configuration of up to 24 freezer racks and approximately 600 standard storage boxes. Its three-shelf stainless-steel interior and insulated inner-door arrangement divide the cabinet into organized storage zones while reducing exposure of materials that are not being accessed.\u003c\/p\u003e\n\u003cp\u003eCard and fingerprint access control help restrict cabinet access to authorized personnel. The combination of two independent cooling systems, inverter-driven compressors, touchscreen control, local temperature documentation, vacuum insulation, comprehensive alarms, and secure cabinet construction makes the freezer suitable for facilities managing large, valuable, or difficult-to-replace biological collections.\u003c\/p\u003e\n\u003ch3\u003eMain Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel:\u003c\/strong\u003e DW-HL780\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct type:\u003c\/strong\u003e Dual-cooling upright ultra-low temperature freezer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCapacity:\u003c\/strong\u003e 780 L \/ 27.5 cu. ft.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTemperature range:\u003c\/strong\u003e −40°C to −86°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCooling performance:\u003c\/strong\u003e −86°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRecommended ambient temperature:\u003c\/strong\u003e 16°C to 32°C\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eClimate class:\u003c\/strong\u003e N\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eController:\u003c\/strong\u003e Microprocessor\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDisplay:\u003c\/strong\u003e 10-inch HD intelligent touchscreen\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCompressors:\u003c\/strong\u003e Two inverter-driven compressors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRefrigeration systems:\u003c\/strong\u003e Two independent systems\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCooling method:\u003c\/strong\u003e Direct cooling\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDefrost method:\u003c\/strong\u003e Manual\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRefrigerant:\u003c\/strong\u003e Hydrocarbon refrigerants\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInsulation:\u003c\/strong\u003e Vacuum-insulated panels with supplementary cabinet insulation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInsulation thickness:\u003c\/strong\u003e Approximately 100 mm at the door and 130 mm at the side walls and rear\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExterior material:\u003c\/strong\u003e Cold-rolled steel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInterior material:\u003c\/strong\u003e Stainless steel\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eShelves:\u003c\/strong\u003e Three stainless-steel shelves\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInner-door configuration:\u003c\/strong\u003e Insulated inner doors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAccess control:\u003c\/strong\u003e Card and fingerprint access\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVacuum relief:\u003c\/strong\u003e Heated vacuum-relief port\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAccess ports:\u003c\/strong\u003e Three, each 25 mm in diameter\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMobility:\u003c\/strong\u003e Four heavy-duty casters and two leveling feet\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eData-recording interval:\u003c\/strong\u003e Every five minutes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLocal record retention:\u003c\/strong\u003e Up to ten years\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eData export:\u003c\/strong\u003e USB\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommunication interfaces:\u003c\/strong\u003e RS485 and remote alarm contact\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBackup battery:\u003c\/strong\u003e Included\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpecified rack model:\u003c\/strong\u003e ZKL304-552B-CT\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpecified rack capacity:\u003c\/strong\u003e 24 racks\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSpecified box capacity:\u003c\/strong\u003e Up to 600 boxes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInternal dimensions, W × D × H:\u003c\/strong\u003e 865 × 696 × 1,286 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eExternal dimensions, W × D × H:\u003c\/strong\u003e 1,205 × 1,025 × 1,955 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePackaged dimensions, W × D × H:\u003c\/strong\u003e 1,285 × 1,145 × 2,127 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNet weight:\u003c\/strong\u003e 331 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGross weight with paper packaging:\u003c\/strong\u003e 393 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGross weight with wooden packaging:\u003c\/strong\u003e 425 kg\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eElectrical supply:\u003c\/strong\u003e 110–230 V, 50\/60 Hz\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRated current:\u003c\/strong\u003e 14.83 A\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Zhongke Meiling Cryogenics Co., Ltd","offers":[{"title":"Default Title","offer_id":48694862676200,"sku":null,"price":22999.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0715\/4165\/3736\/files\/DW-HL780_1.png?v=1782838032","url":"https:\/\/solutioninstruments.com\/products\/meling-biomedical-dw-hl780-40-c-to-86-c-dual-cooling-upright-ultra-low-temperature-freezer-780-l","provider":"Solution Instruments","version":"1.0","type":"link"}