{"product_id":"large-capacity-oil-bath-37l-with-external-transformer-boa-311","title":"Yamato BOA311 Large Capacity Oil Bath 37L With External Transformer","description":"\u003ch2\u003eLarge Capacity Oil Bath 37L With External Transformer Overview\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eLarge Capacity Oil Bath 37L With External Transformer\u003c\/strong\u003e (model BOA311) is a high-temperature oil bath from Yamato Scientific, supplied by LabSupplies.com as an authorized dealer. Its 37-liter reservoir heats from room temperature +10°C up to 270°C, supporting demanding thermal work across research and QC laboratories.\u003c\/p\u003e\n\u003cp\u003eConstruction pairs a stainless steel inner bath with a melamine-resin-coated iron and steel exterior, while PET resin film protects the control plates. Jet stirring circulates the silicone-oil medium for tight temperature distribution of ±0.2°C at 200°C. A Pt100Ω platinum sensor feeds PID control managed by an onboard microcomputer.\u003c\/p\u003e\n\u003cp\u003eOperating on 220V power, the unit occupies a 36 × 36 × 30 inch footprint and weighs 130 lbs. Yamato manufactures the bath in Japan under ISO 9001:2015 and ISO 14001:2015 certification. An external transformer ships with the system.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eJet stirring:\u003c\/strong\u003e circulates silicone oil for high temperature-distribution accuracy, holding ±0.2°C and ±0.1°C accuracy at 200°C.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTriple overheat prevention:\u003c\/strong\u003e automatic shut-off at set point +6°C, an overheat-prevention device, and an independent overheat-prevention device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloat-switch protection:\u003c\/strong\u003e dual float switches guard against empty heating and oil overflow.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEmergency safety:\u003c\/strong\u003e emergency-stop switch forces cut-off of the overcurrent circuit, backed by an overcurrent leakage breaker and key lock.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDigital control:\u003c\/strong\u003e green 4-digit LED shows the reading, red 4-digit LED shows the set point, with menu and ▲▼ key entry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnectivity:\u003c\/strong\u003e external alarm output, temperature output (4–20 mA \/ 1–5V), RS485 communication, self-diagnostic and power-failure compensation functions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eHow to Choose the Right Oil Bath\u003c\/h2\u003e\n\u003cp\u003eMatching an oil bath to your workflow comes down to reservoir size, temperature ceiling, control sophistication, and site power. Weigh each axis against your throughput and safety requirements before specifying a unit.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e a 37 L reservoir suits large vessels or batch immersion; confirm the working volume fits your flasks and sample count.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e this bath reaches room temperature +10°C to 270°C, so verify your protocol stays within that window with silicone oil.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl type:\u003c\/strong\u003e PID microcomputer control with digital LED readouts delivers tight setpoint stability versus simpler analog dials.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e the 220V configuration ships with an external transformer; match it to your bench circuit and available power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFootprint:\u003c\/strong\u003e plan for the 36 × 36 × 30 inch dimensions and 130 lb weight on a stable surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety devices:\u003c\/strong\u003e triple overheat prevention, float switches, and an emergency-stop switch matter for unattended high-temperature runs.\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\u003e37 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage\u003c\/td\u003e\n\u003ctd\u003e220V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temperature Range\u003c\/td\u003e\n\u003ctd\u003eRoom temperature +10°C to 270°C \u003csup\u003e*1\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.1°C (at 200°C, silicone oil) \u003csup\u003e*2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Distribution\u003c\/td\u003e\n\u003ctd\u003e±0.2°C (at 200°C, silicone oil) \u003csup\u003e*2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat-up Time\u003c\/td\u003e\n\u003ctd\u003e~70 min (to 200°C) \u003csup\u003e*2\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Control System\u003c\/td\u003e\n\u003ctd\u003ePID control by microcomputer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Setting \/ Display\u003c\/td\u003e\n\u003ctd\u003eDigital menu and ▲▼ keys; green 4-digit LED (reading), red 4-digit LED (set point)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor\u003c\/td\u003e\n\u003ctd\u003ePt100Ω platinum sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStirring\u003c\/td\u003e\n\u003ctd\u003eJet stirring for high temperature-distribution accuracy\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReservoir Capacity\u003c\/td\u003e\n\u003ctd\u003e~37 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeat-Transfer Medium\u003c\/td\u003e\n\u003ctd\u003eSilicone oil (heat-resistant dimethyl silicone, viscosity ≤100 cSt)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Devices\u003c\/td\u003e\n\u003ctd\u003eTriple overheat prevention (auto shut-off at set +6°C, overheat-prevention device, independent overheat-prevention device); emergency-stop switch; float switch (prevents empty heating and oil overflow); overcurrent leakage breaker; key lock; power-failure compensation; self-diagnostic function\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication \/ Output\u003c\/td\u003e\n\u003ctd\u003eExternal alarm output; temperature output (4–20 mA \/ 1–5V); RS485 communication\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUsage Note\u003c\/td\u003e\n\u003ctd\u003eUse with an exhaust device such as a fume hood — silicone-oil smoke is flammable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eIron and steel plate baked with melamine resin coating  (exterior)\nStainless steel bath (inner bath)\nPET resin film (plates)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCountry of Origin\u003c\/td\u003e\n\u003ctd\u003eJapan\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGTIN (Barcode)\u003c\/td\u003e\n\u003ctd\u003e797059932184\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShipping Weight\u003c\/td\u003e\n\u003ctd\u003e130 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (L × W × H)\u003c\/td\u003e\n\u003ctd\u003e36 × 36 × 30 in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent Size\u003c\/td\u003e\n\u003ctd\u003e37 L\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003csmall\u003e\u003csup\u003e*1\u003c\/sup\u003e No-load operation of bath only; maximum temperature varies with circumstances and operating conditions. \u003csup\u003e*2\u003c\/sup\u003e Measured under ambient temperature 23°C ±5°C, humidity 65%RH ±20%, per Yamato Scientific test conditions.\u003c\/small\u003e\u003c\/p\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\u003eBOA-311\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\/5lt2nifa54pmhsn\/BOA%20Series%20Oil%20Bath.pdf?dl=2\" target=\"_blank\" rel=\"noopener\"\u003eProduct Brochure\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dropbox.com\/s\/0hq2208jf4gq010\/YLT%20ISO9001%20ENG%20%28EXP%20FEB%202022%29.pdf?dl=0\" target=\"_blank\" rel=\"noopener\"\u003eISO 9001\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.dropbox.com\/s\/9qrf1gfsvoeiea4\/YLT%20ISO14001%20ENG%20%28Ex%20June%2026%202023%29%20%E8%8B%B1%E6%96%87%E8%AA%8D%E8%A8%BC%E6%9C%89%E5%8A%B9%E6%9C%9F%E9%99%90.pdf?dl=120\" target=\"_blank\" rel=\"noopener\"\u003eISO 14001\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.yamato-usa.com\/shop\/yamato-boa-series-large-capacity-constant-temp-laboratory-oil-bath-33?category=11#attr=67\" 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\/oil-bath-digital-7l-bo-601-115v\"\u003eOil Bath Digital 7L\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/oil-bath-2-2l-hard-transparent-glass-bog-200\"\u003eOil Bath 2.2L Hard Transparent Glass\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/oil-bath-2-2l-stainless-steel-bos-200\"\u003eOil Bath 2.2L Stainless Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/oil-bath-1l-hard-transparent-glass-bog-100\"\u003eOil Bath 1L Hard Transparent Glass\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/oil-bath-1l-stainless-steel-bos-100\"\u003eOil Bath 1L Stainless Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/products\/oil-bath-digital-5l-bo-302a\"\u003eOil Bath Digital 5L\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"\/collections\/oil-baths\"\u003eView all Oil Baths →\u003c\/a\u003e\u003c\/p\u003e\n\u003ch2\u003eWhy Buy From LabSupplies.com\u003c\/h2\u003e\n\u003cp\u003eOrder the Yamato BOA311 oil bath directly from LabSupplies.com and receive a genuine unit backed by the manufacturer warranty. 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 every unit is genuine and covered by the manufacturer warranty.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIn stock:\u003c\/strong\u003e ready to ship now from USA inventory.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShips from USA:\u003c\/strong\u003e domestic fulfillment shortens lead times.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpecialist support:\u003c\/strong\u003e dedicated lab-equipment staff help confirm fit and specifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is the temperature range of the Yamato BOA311 oil bath?\u003c\/h3\u003e\u003cp\u003eThe BOA311 operates from room temperature +10°C up to 270°C. PID microcomputer control with a Pt100Ω platinum sensor maintains ±0.1°C accuracy at 200°C using silicone oil.\u003c\/p\u003e\n\u003ch3\u003eWhat is the reservoir capacity and footprint?\u003c\/h3\u003e\u003cp\u003eThe reservoir holds approximately 37 liters. External dimensions measure 36 × 36 × 30 inches and the unit weighs 130 lbs, so plan for a stable, dedicated bench location.\u003c\/p\u003e\n\u003ch3\u003eWhat voltage does the BOA311 require?\u003c\/h3\u003e\u003cp\u003eThis configuration runs on 220V and ships with an external transformer. Confirm your bench circuit supplies the required power before installation.\u003c\/p\u003e\n\u003ch3\u003eWhat heat-transfer medium and materials are used?\u003c\/h3\u003e\u003cp\u003eUse heat-resistant dimethyl silicone oil with viscosity of 100 cSt or less. The inner bath is stainless steel, the exterior is melamine-resin-coated iron and steel, and the control plates use PET resin film.\u003c\/p\u003e\n\u003ch3\u003eWhat safety features protect against overheating?\u003c\/h3\u003e\u003cp\u003eTriple overheat prevention safeguards the bath: automatic shut-off at set point +6°C, an overheat-prevention device, and an independent overheat-prevention device. Float switches prevent empty heating and oil overflow, while an emergency-stop switch cuts the overcurrent circuit.\u003c\/p\u003e\n\u003ch3\u003eDoes the BOA311 support external communication or monitoring?\u003c\/h3\u003e\u003cp\u003eYes. The unit provides external alarm output, a temperature output terminal (4–20 mA \/ 1–5V adjustable), and RS485 communication, plus self-diagnostic and power-failure compensation functions.\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\/large-capacity-oil-bath-37l-with-external-transformer-boa-311#product\",\n      \"name\": \"Yamato BOA311 Large Capacity Oil Bath 37L With External Transformer\",\n      \"sku\": \"BOA-311\",\n      \"mpn\": \"BOA-311\",\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\/large-capacity-oil-bath-37l-with-external-transformer-boa-311\",\n      \"dateModified\": \"2026-06-29\",\n      \"offers\": {\n        \"@type\": \"Offer\",\n        \"priceCurrency\": \"USD\",\n        \"price\": \"10930.00\",\n        \"availability\": \"https:\/\/schema.org\/InStock\",\n        \"url\": \"https:\/\/labsupplies.com\/products\/large-capacity-oil-bath-37l-with-external-transformer-boa-311\",\n        \"seller\": {\n          \"@type\": \"Organization\",\n          \"name\": \"LabSupplies.com\"\n        }\n      },\n      \"gtin12\": \"797059932184\",\n      \"image\": \"https:\/\/dl.dropboxusercontent.com\/scl\/fo\/02jn6wbbh1yhzaqkcyplw\/h\/BOA311.png?rlkey=wtjo5lqeg5sku9a3506qrpssx\",\n      \"description\": \"BOA311 37L oil bath, room temp +10°C to 270°C, PID microcomputer control, jet stirring. 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