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Uncirculated Water Baths TWB-4E

The water bath is an essential piece of equipment in any laboratory.

Our innovative baths combine ease of use and high performance – to increase productivity across all your lab applications.

Made of stainless steel and featuring a solid clear gable lid to reduce heat loss, our uncirculated water baths offer unparalleled temperature control.


As a leading supplier of laboratory equipment in Australia, Thermoline offers a range of quality laboratory water baths to suit a variety of applications.

The range of laboratory water baths is trusted for their consistency in delivering outstanding performance and reliability. Our innovative baths combine ease of use and high performance to help customers achieve increased productivity across many applications.

The uncirculated laboratory water baths are available in three key sizes, 5, 12 and 24 litres. As the name suggests, the water in the bath is not circulated by any mechanical means and instead relies on the gentle, natural convection of heat through the water. The bath provides a stable and controlled temperature environment for samples, test tubes, or other items.

A protective, perforated false floor sits above the heated floor to protect your samples from directly contacting the heater. Convenient carry handles assist with moving the bath if needed. All baths feature a simple to use drain when the time comes to remove the water and clean the tank.

Water baths have a wide range of applications in various fields, including biomedicine, life sciences, and industry. They are also commonly used in commercial kitchen cooking methods like Sous Vide. Some specific applications of water baths include sample thawing, bacteriological examinations, reagent warming, coliform determinations, and microbiological assays.

If you have specific requirements for your laboratory water bath, such as a specific size or function, we can customise a water bath to suit your exact needs.

Technical Data

  • Capacity
    5L - 24L
  • Models Available
  • Temperature Range
    Ambient +5°C to +99°C
  • Electrical


At Thermoline, we strive to supply helpful customer support to ensure that you get the most out of our products. We are committed to providing whatever support our customers need, wherever they are in the world. If you can't find your solution in the below FAQs or Knowledge Base, please contact our friendly support team.

What are laboratory water baths used for?

Laboratory water baths are a type of laboratory equipment that are used for a variety of applications, including:

  1. Warming and thawing samples: Water baths can be used to quickly and uniformly warm or thaw samples, such as reagents or frozen biological specimens, to a specific temperature.

  2. Incubating and culturing samples: Water baths can be used to incubate samples at a controlled temperature for a specified period. This is commonly used in microbiology and molecular biology applications, such as growing bacterial cultures, conducting enzyme assays, and hybridisation.

  3. Heating and maintaining consistent temperature for reactions: Water baths can be used for heating and maintaining a constant temperature for chemical and biochemical reactions, such as PCR amplification, DNA melting, and protein denaturation.

  4. Melting point determination: Water baths can be used for determining the melting point of solid samples, such as organic compounds.

Should I use an uncirculated laboratory water bath or a circulated laboratory water bath?

The choice between using an uncirculated laboratory water bath or a circulated laboratory water bath depends on the specific requirements of your experiment or application.

An uncirculated water bath can be suitable for certain applications, such as when you need to maintain a consistent temperature in a sample or material that is not sensitive to temperature variations or if your sample is prone to be 'knocked over' by water currents due to its weight and shape. However, a circulated water bath is preferred for most laboratory applications because it provides more consistent and uniform heating.

A circulated water bath typically has a built-in pump that circulates water throughout the bath, ensuring a more even temperature distribution.