Grant Instruments - Grant Instruments SUB 14 Heated Unstirred Water Bath

Applications & Use Cases

• Sample incubation and warming in biological and chemical laboratories.
• Thawing frozen samples, reagents, and media.
• Media preparation for microbiology and cell culture.
• Quality control testing requiring precise temperature maintenance.
• General laboratory heating tasks for non-flammable liquids.

Typical Specifications

Typical capacity

For this class of equipment, capacities commonly range from 5 to 20 litres, with 14 litres being a common mid-range size.

Temperature range

Units of this type typically operate from ambient +5°C up to 99°C, suitable for most laboratory heating applications.

Temperature stability

Good quality unstirred water baths commonly offer stability of ±0.2°C or better, ensuring consistent sample conditions.

Power supply

Typically 230V, 50Hz single-phase, drawing around 700W for a unit of this capacity.

Construction materials

The tank is commonly stainless steel for corrosion resistance, housed within a durable outer case, often made of coated steel or robust plastic.

Safety features

Most units include independent over-temperature cut-outs to protect samples and the workplace.

Frequently Asked Questions

• What is the difference between an unstirred and a stirred water bath?

  Unstirred water baths rely on convection for heat distribution, which is suitable for many routine tasks. Stirred baths incorporate a pump or stirrer for enhanced temperature uniformity, particularly important for sensitive applications or larger volumes.

• Can this water bath be used for applications below ambient temperature?

• What maintenance is typically required for an unstirred water bath?

• Is a lid necessary for operation?

• What is the typical footprint of a 14-litre water bath?