BR-05A Recirculating Chiller — 8L with 600W Cooling Capacity for Dual 2L or Single 5L Rotary Evaporator Support

The BR-05A's 8L stainless steel bath provides 60% more coolant volume than the BR-03A's 5L — delivering a proportionally larger thermal mass that buffers temperature fluctuations from variable external heat loads more effectively. In applications where the connected rotary evaporator or chemical process generates variable heat loads (e.g., during solvent changeovers or process startup transients), the larger thermal mass of the BR-05A's 8L bath maintains more stable coolant delivery temperatures than the smaller 5L bath — supporting the ±2°C accuracy specification more consistently across variable load conditions.

The BR-05A's PID controller continuously monitors bath temperature via the PT100 sensor and modulates the R404A compressor and heating outputs to maintain the setpoint with ±2°C accuracy across the full -20°C to +20°C range. The programmable multi-step function enables sequential temperature protocols to be automated — particularly useful in dual rotary evaporator setups where different sequential solvents may require different condenser temperatures, and in pharmaceutical process cooling where defined temperature transitions are protocol requirements.

The BR-05A's 600W cooling capacity at 10°C enables simultaneous condenser cooling for two 2L rotary evaporators — each presenting a condenser heat load of approximately 200–300W at typical evaporation rates. At 0°C setpoint, the 350W capacity supports a single 5L rotary evaporator's condenser requirements. This cooling capacity rating makes the BR-05A the most versatile entry-level BR Series model for multi-instrument laboratory rotary evaporation setups, where a single compact chiller must simultaneously service multiple evaporators.

The BR-05A's 240 × 200 × 170 mm liquid tank opening — larger than the BR-03A's 240 × 150 × 150 mm — accommodates a wider range of direct immersion applications alongside external circulation. The larger opening enables immersion cooling of larger sample containers, reaction vessels, and cold trap assemblies directly in the BR-05A bath — expanding the unit's application versatility beyond external circulation-only use.

The BR-05A's preset ON/OFF timing function enables scheduled chiller start and stop — allowing the unit to pre-cool to the required condenser temperature before the operator's working session begins and to shut down automatically at the end of defined working periods. For laboratory environments running dual rotary evaporator setups with defined morning start times, the preset timing eliminates manual start-up procedures and ensures the coolant is at the required temperature when operation begins.

The BR-05A's maintenance-free design — sealed refrigerant circuit, no oil changes, corrosion-resistant stainless steel construction, and clean surface exterior — minimises the routine maintenance burden in busy routine laboratory environments. Periodic coolant level monitoring through the liquid level viewing window and scheduled coolant replacement at defined intervals constitute the primary routine maintenance requirements, without the mechanical service requirements of more complex cooling system designs.