The BOG-100 is a Yamato synthetic-chemistry oil bath with a hard transparent glass bath for full visibility of the flask and oil during heating. Sized at the 1 L class (φ140 × 100 mm internal bath) with a remote PID controller that can be operated safely at a distance, it is built for round-bottom flask heating in synthesis, distillation, and rotary-evaporation setups. This is the 115V variant; the 220V sibling is the BOG-110, and the stainless-bath equivalent is the BOS-100.
Key Specifications
| SKU | BOG-100 |
| Type | Oil bath, hard transparent glass, remote PID controller |
| Bath capacity | Recommended (no load) ~0.8 L; maximum ~1.0 L |
| Internal bath dimensions | φ140 × 100 mm |
| Temperature control range | Room temp. +5 °C to 240 °C |
| Temperature setting range | 0 °C to 260 °C |
| Temperature accuracy | ±0.3 °C (at 200 °C, when stirring) |
| Control system | PID control, Pt100Ω sensor, digital ▲▼ set (1 °C units) |
| Heater | Stainless-steel tube heater, 310 W |
| External dimensions | φ150 × 205 × 140 mm (bath); controller 150 × 90 × 45 mm |
| Weight | ~2.3 kg total (bath + heater + controller) |
| Voltage / power | 115V, 50/60 Hz, 3.5 A (220V sibling = BOG-110) |
Application Profile
The 1 L glass oil bath targets flask-scale synthetic and distillation chemistry where high oil temperatures and visibility matter:
- Round-bottom flask heating in organic synthesis and reflux
- Rotary-evaporation and distillation heat sources requiring stable oil temperatures to 240 °C
- Reactions above the water-bath ceiling — oil enables set points well past 100 °C
- Stirred reactions — the bottom indent seats a magnetic-stirrer hot plate (compatible with Yamato MFD800/MFH800), and a PTFE stirrer and arbor ship with the unit
- Teaching and method development where seeing the flask and oil level through a glass bath aids setup
Choose the glass BOG bath when visibility is the priority; choose the stainless BOS bath when temperature stability and durability are more important (BOS also reaches 250 °C vs 240 °C).
Design Architecture
A remote PID controller (150 × 90 × 45 mm) drives a 310 W stainless-steel tube heater via triac zero-cross switching, holding ±0.3 °C at 200 °C when stirring with a Pt100Ω sensor. Separating the controller from the hot bath lets the operator set and read temperature safely at a distance. An indent at the bath bottom integrates a magnetic-stirrer hot plate and prevents the bath from sliding. Optionally, a flask-inserted sensor pairs with the in-tank sensor for tighter control at the reaction site, and a triple-system configuration is available. Safety layers include self-diagnostic sensor-error detection, automatic overheat prevention, an independent overheat prevention device, a heater guard, and a 6.3 A short-circuit/overcurrent fuse.
Frequently Asked Questions
What temperature range does the BOG-100 reach? It controls from room temperature +5 °C to 240 °C (setting range 0–260 °C), holding ±0.3 °C at 200 °C when stirring, via PID control with a Pt100Ω sensor.
How much oil does the BOG-100 hold, and is oil included? The recommended fill is about 0.8 L, with a 1.0 L maximum. Oil is not included — add a suitable heat-transfer or silicone oil for your target set point.
Should I choose the glass BOG or the stainless BOS bath? Choose the glass BOG-100 when visibility of the flask and oil level is the priority; choose the stainless BOS-100 when temperature stability and durability matter more (the BOS also reaches 250 °C vs 240 °C).
Is the BOG-100 available in 220V? The BOG-100 is 115V. Order the BOG-110 for 220V. Stainless-bath equivalents are the BOS-100 (115V) and BOS-110 (220V).
Can I stir a reaction in the BOG-100? Yes. An indent at the bath bottom seats a magnetic-stirrer hot plate (compatible with Yamato MFD800/MFH800), and a PTFE stirrer plus arbor ship with the unit.
Ordering & Configuration
In the box: heater guard (1 set), arbor (φ12 × 90 mm, 1), PTFE stirrer (~φ8 × 50 mm, 1), connector cap (1), and tag-attached cable ties (3).
Add oil separately. The recommended fill is ~0.8 L (max ~1.0 L) of a suitable heat-transfer/silicone oil for the target set point — oil is not included.
Confirm voltage. BOG-100 is 115V; order BOG-110 for 220V. For a stainless bath at the same 1 L class, choose BOS-100 (115V) / BOS-110 (220V).
Catalog-priced; no quote gate. Confirm voltage at checkout.
Warranty: Per Yamato standard terms.
Yamato BOG/BOS oil bath family:
- BOG-100 (this product) — 1 L glass, 115V · BOG-110 — 1 L glass, 220V
- BOG-200 / -210 — 2.2 L glass (115V / 220V)
- BOS-100 / -110 — 1 L stainless · BOS-200 / -210 — 2.2 L stainless
