Water Bath Digital 5L Overview
The Yamato Scientific Water Bath Digital 5L (BM302A) is a 5 L constant-temperature water bath built for routine heating and incubation work, with an operating range of ambient +10 to 90°C and ±1°C accuracy. LabSupplies.com supplies this unit as an authorized Yamato Scientific dealer.
A flat-bottom reservoir with no internal heater or sensor keeps the φ240 mm bath easy to drain and clean. Heating runs through a 1000W aluminum-sheathed heater, while a Pt100Ω sensor feeds PID control managed by an onboard microprocessor. Setpoints enter through keypad and read out on a white LED digital display down to 1°C.
Each bath measures 16 × 16 × 14 in and weighs roughly 16 lbs, fitting standard bench footprints. Two voltage builds cover global lab power: BM302A for 100-115V and BM312A for 200-230V. Manufacturing follows Yamato's ISO 9001:2015 and ISO 14001:2015 quality and environmental systems.
Key Features
- PID microprocessor control: holds setpoints across ambient +10 to 90°C with ±1°C accuracy.
- White LED digital display: keypad entry with a minimum display digit of 1°C for clear, repeatable setting.
- Easy-clean flat bath: 5 L reservoir with φ240 mm internal diameter and no heater or sensor inside the tank.
- 1000W aluminum-sheathed heater: paired with a Pt100Ω sensor for stable, fast heating.
- Layered safety system: automatic and independent overheat prevention, temperature upper-limit error detection, and an overcurrent protection fuse.
- Flexible operation modes: fixed temperature, quick auto stop, auto stop, and auto start.
How to Choose the Right Water Bath
Selecting a water bath comes down to matching reservoir volume, temperature performance, and site power to your protocol. Use these axes to confirm the bath fits both the workflow and the bench.
- Capacity: a 5 L flat bath suits flasks, tubes, and sample racks; match reservoir volume to the largest vessel batch you run.
- Temperature range: ambient +10 to 90°C covers most incubation, warming, and reagent-conditioning tasks below boiling.
- Control type: PID microprocessor control with digital LED readout gives tighter setpoint stability than analog dials for repeatable results.
- Voltage: choose BM302A for 100-115V mains or BM312A for 200-230V mains to match your facility's supply.
- Safety features: overheat prevention, upper-limit error detection, and fuse protection matter for unattended or extended runs.
- Footprint: confirm the 16 × 16 × 14 in envelope fits available bench space near power and a drain.
Specifications
| Specification | Detail |
|---|---|
| Capacity | 5 L |
| Voltage | 115V |
| Temperature Accuracy | ±1°C *2 |
| Temperature Control System | PID control by microprocessor |
| Temperature Setting / Display | White LED digital display, key entry, min. digit 1°C |
| Heater | 1000W aluminum sheathed heater |
| Sensor | Pt100Ω |
| Safety Devices | Automatic overheat prevention; independent overheat prevention; temperature upper-limit error; overcurrent protection fuse |
| Operation Function | Fixed temperature; quick auto stop; auto stop; auto start |
| Operating Temperature Range | ambient +10 to 90°C *1 |
| Material | Polybutylene terephthalate resin (with fiber glass), chromium-free electrogalvanized steel sheets, stainless steel, aluminum (exterior) Stainless steel, aluminum (bath reservoir) Glass wool (heat insulator) |
| Country of Origin | China |
| GTIN (Barcode) | 797059928606 |
| Shipping Weight | 16 lbs |
| Dimensions (L × W × H) | 16 × 16 × 14 in |
| Component Size | 5 L |
*1 No-load operation of bath only; maximum temperature varies with circumstances and operating conditions. *2 Measured under ambient temperature 23°C ±5°C, humidity 65%RH ±20%, per Yamato Scientific test conditions.
Available Sizes and Configurations
| SKU | Configuration | Pack |
|---|---|---|
| BM-302A | 115V | EA |
| BM-312A | 220V | EA |
Documentation
More in This Series
Why Buy From LabSupplies.com
LabSupplies.com ships the Yamato Scientific BM302A and BM312A as genuine, warrantied units backed by a team that answers spec questions before you order.
- Authorized Yamato Scientific dealer: genuine equipment covered by the manufacturer warranty.
- In stock: ready to order in both 115V and 220-230V configurations.
- Ships from USA inventory: dispatched directly to your lab.
- Lab-equipment specialists: dedicated support for voltage, capacity, and application questions.
Frequently Asked Questions
What temperature range does the Yamato BM302A water bath cover?
The BM302A operates from ambient +10 to 90°C with ±1°C accuracy. Temperature is regulated by PID control through an onboard microprocessor and a Pt100Ω sensor.
What is the bath capacity and reservoir size?
The bath holds 5 L and has a φ240 mm internal diameter. The reservoir is a flat design with no heater or sensor inside the tank, which simplifies draining and cleaning.
What is the difference between the BM302A and BM312A?
Voltage is the only difference. The BM302A runs on 100-115V mains and the BM312A runs on 200-230V mains; both share the same 5 L capacity, temperature range, and control system.
What heater and safety features does this bath include?
A 1000W aluminum-sheathed heater provides heating. Safety devices include automatic overheat prevention, independent overheat prevention, temperature upper-limit error detection, and an overcurrent protection fuse.
What are the dimensions and weight for bench planning?
The unit measures 16 × 16 × 14 in (L×W×H) and weighs approximately 16 lbs. Confirm bench clearance near a power source and drain before installation.
How are temperature settings entered and displayed?
Settings are entered by keypad and shown on a white LED digital display with a minimum display digit of 1°C. Operation modes include fixed temperature, quick auto stop, auto stop, and auto start.
