{"product_id":"upright-style-ultra-low-freezers-40-c-to-80-c-31-cu-ft-manual-defrost-ulf-901u","title":"Yamato ULF901U Upright Style Ultra Low Freezers -40°C To -80°C, 31 cu.ft., Manual Defrost","description":"\u003ch2\u003eUpright Style Ultra Low Freezers -40°C To -80°C, 31 cu.ft., Manual Defrost Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eUpright Style Ultra Low Freezers -40°C To -80°C, 31 cu.ft., Manual Defrost\u003c\/strong\u003e (Yamato Scientific model ULF901U) holds 877 liters of sample storage across a -40°C to -80°C range. Sold by LabSupplies.com as an authorized dealer, this upright laboratory freezer pairs a microprocessor digital controller with audible and visual alarms. Battery-backed alarm protection and remote alarm contacts guard specimens against mechanical or electrical failure.\u003c\/p\u003e\n\u003cp\u003eCascade refrigeration drives the cooling: two hermetic compressors run CFC- and HCFC-free R-508B and R-404A refrigerants through an air-cooled condenser with two heavy-duty fans, so no liquid coolant is required. A 14-gauge zinc-coated galvanized steel chamber resists corrosion, while the 16-gauge steel exterior wears a powder-coated cool gray finish. Four fixed shelves create five compartments and accept up to 35 racks.\u003c\/p\u003e\n\u003cp\u003ePower options span 115V, 208V, and 230V at 60 Hz single-phase, plus a 220V 50\/60 Hz single-phase configuration for international sites. Exterior dimensions measure 60.5\" × 37\" × 79.5\", and the unit ships at 1,325 lbs. Manufactured in the USA and UL Listed, the ULF901U also includes an automatic timer that restarts the freezer after a power failure.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicroprocessor digital control:\u003c\/strong\u003e dual display shows set point and chamber temperature, with a scan button for temperature setting and tamper-proof lockout.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery-operated alarm system:\u003c\/strong\u003e audible and visual signals on mechanical or electrical failure, over- and under-temperature settings, alarm silencing switch, and battery test switch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote alarm relay:\u003c\/strong\u003e a built-in relay supports remote alarm hook-up for centralized monitoring.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCascade refrigeration:\u003c\/strong\u003e two hermetic compressors run CFC- and HCFC-free R-508B and R-404A through an air-cooled condenser, requiring no liquid coolant.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAutomatic power-failure recovery:\u003c\/strong\u003e an integrated timer restarts the unit after a power interruption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStorage layout:\u003c\/strong\u003e four fixed shelves form five compartments and accommodate up to 35 racks, plus a standard 1\/2\" access port.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to Choose the Right Ultra-Low Freezer\u003c\/h2\u003e\n\u003cp\u003eSelecting an ultra-low freezer comes down to matching storage capacity, temperature performance, and site power to your sample workload. Use these criteria to confirm the ULF901U fits your lab.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 877 liters (31 cu.ft.) and a 35-rack limit determine how many cryoboxes or specimen racks you can store before adding a second unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e a -40°C to -80°C span covers long-term storage of enzymes, cell lines, and biological samples; verify your protocol's required set point falls inside it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl type:\u003c\/strong\u003e microprocessor digital control with a dual display and tamper-proof lockout supports documented, repeatable set-point management.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 115V, 208V, and 230V 60 Hz options plus a 220V 50\/60 Hz build let you match existing facility circuits and international power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e 60.5\" × 37\" × 79.5\" exterior dimensions and a 1,325 lb weight dictate floor space, doorway clearance, and structural load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSample safety:\u003c\/strong\u003e battery-backed alarms, remote alarm contacts, and automatic power-failure recovery protect inventory during outages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003e31 cu.ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-40°C to -80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDefrost\u003c\/td\u003e\n\u003ctd\u003eManual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterior Capacity\u003c\/td\u003e\n\u003ctd\u003e877 L \/ 31 cu.ft.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRack Capacity\u003c\/td\u003e\n\u003ctd\u003e35 racks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShelving\u003c\/td\u003e\n\u003ctd\u003e4 fixed shelves (5 compartments)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterior Dimensions\u003c\/td\u003e\n\u003ctd\u003e42\" × 25\" × 51.25\" (106 × 63 × 130 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExterior Dimensions\u003c\/td\u003e\n\u003ctd\u003e60.5\" × 37\" × 79.5\" (153 × 93 × 201 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Control System\u003c\/td\u003e\n\u003ctd\u003eDigital control with dual display (set point and chamber temperature); scan button for temperature setting; tamper-proof lockout\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefrigeration System\u003c\/td\u003e\n\u003ctd\u003eCascade type — two hermetic compressors\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRefrigerant\u003c\/td\u003e\n\u003ctd\u003eCFC-free R-508B and R-404A (CFC- \u0026amp; HCFC-free)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCondenser\u003c\/td\u003e\n\u003ctd\u003eAir-cooled with two heavy-duty fans; no liquid coolant required\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlarm System\u003c\/td\u003e\n\u003ctd\u003eBattery-operated alarm emits an audible and visual signal on mechanical or electrical failure; over- and under-temperature settings, alarm silencing switch, and battery test switch; relay provided for remote alarm hook-up\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Failure Recovery\u003c\/td\u003e\n\u003ctd\u003eAutomatic timer system restarts the unit after a power failure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical Requirements\u003c\/td\u003e\n\u003ctd\u003e115V \/ 208V \/ 230V, 60 Hz, 1-phase; 220V, 50\/60 Hz, 1-phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOptional Accessories\u003c\/td\u003e\n\u003ctd\u003eChart recorder; CO₂ and LN₂ back-up system; racks; cold safety gloves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eChamber is 14-ga. Zinc coated galvanized steel.\nExterior is 16-ga. steel. Power coated cool gray\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eUSA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN (Barcode)\u003c\/td\u003e\n\u003ctd\u003e797059929986\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e1325 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e67 × 45 × 86 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Size\u003c\/td\u003e\n\u003ctd\u003e30 CF\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther Certification\u003c\/td\u003e\n\u003ctd\u003eUL Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eAvailable Sizes and Configurations\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSKU\u003c\/th\u003e\n\u003cth\u003eConfiguration\u003c\/th\u003e\n\u003cth\u003ePack\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eULF-901U\u003c\/td\u003e\n\u003ctd\u003eEA\u003c\/td\u003e\n\u003ctd\u003eEA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eDocumentation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dropbox.com\/s\/i6la82wldj3fdzd\/ULF%20Series%20Ultra%20Low%20Freezers.pdf?dl=15\" target=\"_blank\" rel=\"noopener\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.yamato-usa.com\/shop\/ultra-low-ulf-series-vertical-upright-freezers-44?category=21#attr=100\" target=\"_blank\" rel=\"noopener\"\u003eYamato Scientific Official Product Page\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eMore in This Series\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-2-cu-ft-manual-defrost-ulf-001c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 2 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-3-cu-ft-manual-defrost-ulf-101c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 3 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-5-cu-ft-manual-defrost-ulf-201c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 5 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-9-cu-ft-manual-defrost-ulf-301c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-12-cu-ft-manual-defrost-ulf-401c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-14-cu-ft-manual-defrost-ulf-501c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-17-cu-ft-manual-defrost-ulf-601c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 17 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-80-c-21cu-ft-manual-defrost-ulf-701c\"\u003eChest Style Ultra Low Freezers -40°C To -80°C, 21Cu.Ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-85-c-22-cu-ft-manual-defrost-ulf-801c\"\u003eChest Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/chest-style-ultra-low-freezers-40-c-to-80-c-27-cu-ft-manual-defrost-ulf-901c\"\u003eChest Style Ultra Low Freezers -40°C To -80°C, 27 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-2-cu-ft-manual-defrost-ulf-001cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 2 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-3-cu-ft-manual-defrost-ulf-101cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 3 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-5-cu-ft-manual-defrost-ulf-201cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 5 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-9-cu-ft-manual-defrost-ulf-301cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 9 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-12-cu-ft-manual-defrost-ulf-401cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 12 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-14-cu-ft-manual-defrost-ulf-501cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 14 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-17-cu-ft-manual-defrost-ulf-601cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 17 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-80-c-21cu-ft-manual-defrost-ulf-701cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -80°C, 21Cu.Ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-85-c-22-cu-ft-manual-defrost-ulf-801cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-chest-style-ultra-low-freezers-40-c-to-80-c-27-cu-ft-manual-defrost-ulf-901cp\"\u003ePlatinum Chest Style Ultra Low Freezers -40°C To -80°C, 27 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/upright-style-ultra-low-freezers-40-c-to-85-c-13-cu-ft-manual-defrost-ulf-401u\"\u003eUpright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/upright-style-ultra-low-freezers-40-c-to-85-c-18-cu-ft-manual-defrost-ulf-501u\"\u003eUpright Style Ultra Low Freezers -40°C To -85°C, 18 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/upright-style-ultra-low-freezers-40-c-to-85-c-22-cu-ft-manual-defrost-ulf-601u\"\u003eUpright Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/upright-style-ultra-low-freezers-40-c-to-85-c-25-cu-ft-manual-defrost-ulf-701u\"\u003eUpright Style Ultra Low Freezers -40°C To -85°C, 25 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/upright-style-ultra-low-freezers-40-c-to-80-c-28-cu-ft-manual-defrost-ulf-801u\"\u003eUpright Style Ultra Low Freezers -40°C To -80°C, 28 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-upright-style-ultra-low-freezers-40-c-to-85-c-13-cu-ft-manual-defrost-ulf-401up\"\u003ePlatinum Upright Style Ultra Low Freezers -40°C To -85°C, 13 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-upright-style-ultra-low-freezers-40-c-to-85-c-18-cu-ft-manual-defrost-ulf-501up\"\u003ePlatinum Upright Style Ultra Low Freezers -40°C To -85°C, 18 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-upright-style-ultra-low-freezers-40-c-to-85-c-22-cu-ft-manual-defrost-ulf-601up\"\u003ePlatinum Upright Style Ultra Low Freezers -40°C To -85°C, 22 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-upright-style-ultra-low-freezers-40-c-to-85-c-25-cu-ft-manual-defrost-ulf-701up\"\u003ePlatinum Upright Style Ultra Low Freezers -40°C To -85°C, 25 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-upright-style-ultra-low-freezers-40-c-to-80-c-28-cu-ft-manual-defrost-ulf-801up\"\u003ePlatinum Upright Style Ultra Low Freezers -40°C To -80°C, 28 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/platinum-upright-style-ultra-low-freezers-40-c-to-80-c-30-cu-ft-manual-defrost-ulf-901up\"\u003ePlatinum Upright Style Ultra Low Freezers -40°C To -80°C, 30 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/undercounter-ultra-low-freezers-40-c-to-85-c-2-cu-ft-manual-defrost-ulf-101un\"\u003eUndercounter Ultra Low Freezers -40°C To -85°C, 2 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/undercounter-ultra-low-freezers-40-c-to-85-c-3-cu-ft-manual-defrost-ulf-201un\"\u003eUndercounter Ultra Low Freezers -40°C To -85°C, 3 cu.ft., Manual Defrost\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhy Buy From LabSupplies.com\u003c\/h2\u003e\n\u003cp\u003eLabSupplies.com is an authorized Yamato Scientific dealer, so every ULF901U ships as a genuine unit backed by the manufacturer warranty. Order directly and let our lab-equipment specialists answer spec questions before you commit.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuthorized Yamato Scientific dealer:\u003c\/strong\u003e genuine equipment with full manufacturer warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn stock:\u003c\/strong\u003e ready to ship from USA inventory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShips from USA:\u003c\/strong\u003e domestic fulfillment for faster delivery.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialist support:\u003c\/strong\u003e dedicated lab-equipment team for configuration and spec questions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat temperature range does the Yamato ULF901U reach?\u003c\/h3\u003e\u003cp\u003eThe ULF901U operates from -40°C to -80°C. This range supports long-term ultra-low storage of biological samples, cell lines, and temperature-sensitive reagents, with a microprocessor digital controller managing the set point.\u003c\/p\u003e\n\u003ch3\u003eHow much storage capacity and what dimensions does the ULF901U offer?\u003c\/h3\u003e\u003cp\u003eThe ULF901U provides 877 liters (31 cu.ft.) of interior capacity and holds up to 35 racks across four fixed shelves and five compartments. Interior dimensions are 42\" × 25\" × 51.25\"; exterior dimensions are 60.5\" × 37\" × 79.5\".\u003c\/p\u003e\n\u003ch3\u003eWhat voltage and power configurations are available?\u003c\/h3\u003e\u003cp\u003eThe ULF901U is available in 115V, 208V, and 230V at 60 Hz single-phase, plus a 220V 50\/60 Hz single-phase build. Match the configuration to your facility circuit before ordering.\u003c\/p\u003e\n\u003ch3\u003eWhat materials is the freezer built from?\u003c\/h3\u003e\u003cp\u003eThe chamber is 14-gauge zinc-coated galvanized steel for corrosion resistance, and the exterior is 16-gauge steel finished in powder-coated cool gray. Cascade refrigeration uses two hermetic compressors and CFC- and HCFC-free R-508B and R-404A refrigerants.\u003c\/p\u003e\n\u003ch3\u003eDoes the ULF901U use manual or automatic defrost?\u003c\/h3\u003e\u003cp\u003eThe ULF901U uses manual defrost. An air-cooled condenser with two heavy-duty fans handles heat rejection, so no liquid coolant is required for operation.\u003c\/p\u003e\n\u003ch3\u003eHow does the freezer protect samples during a power failure?\u003c\/h3\u003e\u003cp\u003eA battery-operated alarm emits audible and visual signals on mechanical or electrical failure, with over- and under-temperature settings and a relay for remote alarm hook-up. An automatic timer system restarts the unit once power is restored.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@graph\": [\n    {\n      \"@type\": \"Product\",\n      \"@id\": \"https:\/\/labsupplies.com\/products\/upright-style-ultra-low-freezers-40-c-to-80-c-31-cu-ft-manual-defrost-ulf-901u#product\",\n      \"name\": \"Yamato ULF901U Upright Style Ultra Low Freezers -40°C To -80°C, 31 cu.ft., Manual Defrost\",\n      \"sku\": \"ULF-901U\",\n      \"mpn\": \"ULF-901U\",\n      \"brand\": {\n        \"@type\": \"Brand\",\n        \"name\": \"Yamato Scientific\"\n      },\n      \"manufacturer\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Yamato Scientific\"\n      },\n      \"url\": \"https:\/\/labsupplies.com\/products\/upright-style-ultra-low-freezers-40-c-to-80-c-31-cu-ft-manual-defrost-ulf-901u\",\n      \"dateModified\": \"2026-06-28\",\n      \"offers\": {\n        \"@type\": \"Offer\",\n        \"priceCurrency\": \"USD\",\n        \"price\": \"26410.00\",\n        \"availability\": \"https:\/\/schema.org\/InStock\",\n        \"url\": \"https:\/\/labsupplies.com\/products\/upright-style-ultra-low-freezers-40-c-to-80-c-31-cu-ft-manual-defrost-ulf-901u\",\n        \"seller\": {\n          \"@type\": \"Organization\",\n          \"name\": \"LabSupplies.com\"\n        }\n      },\n      \"gtin12\": \"797059929986\",\n      \"image\": \"https:\/\/dl.dropboxusercontent.com\/scl\/fo\/02jn6wbbh1yhzaqkcyplw\/h\/ULF901U.png?rlkey=wtjo5lqeg5sku9a3506qrpssx\",\n      \"description\": \"Yamato ULF901U upright ultra-low freezer: 31 cu.ft., -40°C to -80°C, microprocessor digital control. 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