Difference between Thermostatic bath and Water bath

Thermostat and Water Bath are two kinds of experimental equipment used to provide a constant temperature environment. They have some differences in working principle, usage scenarios and temperature control methods.

How it works

Thermostatic tank: Thermostatic tank is a device that maintains a constant temperature through electric heating and temperature control system. Thermostatic tank usually has strong temperature stability and precision, and can provide a constant temperature environment in a narrow temperature range. It is suitable for experiments that require high-precision constant temperature, such as biology, medicine, chemistry and other fields.

Water Bath: A Water Bath is a simple heating device that heats water or other liquids to a set temperature through a heating element. Water baths are usually used to provide a constant temperature heating environment, but the temperature control accuracy is relatively low and is suitable for some experiments that do not require very high precision.

Usage scenario

Thermostat: Due to its high temperature stability and accuracy, the thermostat is suitable for experiments that require stricter constant temperature conditions, such as cell culture, PCR reaction, enzyme catalysis experiments, etc.

Water bath: The Water Bath is suitable for general experiments, such as heating reagents, sample dissolution, sample pretreatment, etc., but for experiments that require high temperature and accuracy, the Water Bath may not be suitable enough.

Temperature control method

Thermostat: Thermostat usually adopts advanced PID control technology, which can achieve accurate temperature control and stability.

Water bath: The temperature control method of the Water Bath is relatively simple, usually using a mechanical or simple electronic thermostat.

Temperature range

Thermostat: Thermostat can usually provide a wide temperature range, from lower temperatures (such as negative degrees Celsius) to higher temperatures (generally no more than 100 degrees Celsius).

Water bath: The temperature range of the Water Bath is usually limited, generally between 0 degrees Celsius and 100 degrees Celsius.

In general, the thermostatic tank is more suitable for experiments that require high precision and high stability constant temperature than the Water Bath, while the Water Bath is suitable for general constant temperature heating experiments. When choosing the right equipment, a decision should be made according to the experimental needs and the required temperature accuracy.