A versatile range of products to fit every need !

A user-friendly cooling water bath is the perfect lab partner. That is why a PolyScience refrigerated circulator would be perfect for your laboratory. A PolyScience cooling water bath is not only user-friendly, but it also functions well and looks good. What more could you want from a refrigerated circulator for your laboratory in the Benelux?

A dependable and versatile cooling water bath to fit every need

A cooling water bath is capable of reaching temperatures as low as -40⁰C. A refrigerated circulator provides dependable temperature control for a wide variety of laboratory cooling applications. The baths come with the following features:

• Working temperatures from -40 to +200⁰C
• Temperature stabilities up to +/- 0.005⁰C
• Capacities from 7 to 45 liters
• Six controller types with large, intuitive displays and multiple communication options
• Large bath openings and easy-to-clean surfaces
• Swivel 180-degree Rotating Controllers
• LidDock lid stowing system
• DuraTop Chemical-resistant deck
• WhisperCool Environmental Control System
• Cool Command Technology

Its versatility and dependability make the PolyScience cooling water bath the perfect lab equipment. With the different options that are available, you are sure to find a refrigerated circulator that is a perfect fit for your laboratory. We also sell heated circulating water baths, should you need one of those for your laboratory.

Order a refrigerated circulator for your laboratory

When you order laboratory equipment from us, you enjoy a number of extra advantages on top of the excellent performance a PolyScience refrigerated circulator provides. We always offer quick support. We respond to your requests within one to two days. Moreover, you do not have to pay any shipping costs when you place an order over 500 euros. Order your cooling water bath or other water bath for your laboratory by contacting us through +31 162 383100 or by filling out the contact form.

Selecting a Cooling Circulating Water Bath

Chillers provide heat removal for a wide variety of processes and equipment. When properly sized and slected, a cooling circulating water bath increases production speed and accuracy, protects valuable process equipment and reduces water consumption and related costs. If it is undersized, it will be inefficient due to excessive cycling. In addition to having an adequate cooling capacity, the chiller must deliver the cooling fluid at the proper pressure and flow rate:

The are four basic factors that affect a cooling circulating water bath sizing and selection:

1. Desired Coolant Temperature

This is the coolant temperature at the inlet of your process or equipment. It is important to measure the temperature at this point to allow for coolant heating as it travels from the chiller to the process. The longer the distance to be covered, the higher the potential heat gain. This heat gain can be minimized by insulating the cooling line and positioning the chiller as close as practical to the equipment or process being cooled.

2. Heat Load

This is the amount of heat that needs to be removed. It is usually expressed in BTUs/hour or watts. The heat load value is often provided by the equipment manufacturer. If not, it can be calulated using the following formula:

Heat load = Flow rate x Fluid Density x Fluid Specific Heat x Constant x d°C

d°C = the difference between the inlet and outlet temperatures of the equipment being cooled.

3. Coolant flow and pressure

These parameters are normally provided by the equipment manufacturer and are a function of the surface area and the heat transfer characteristics of the process/material being cooled. It is crucial that your chiller deliver coolant at the proper flow rate and pressure. If the flow rate or pressure is too high, the equipment being cooled may be damaged. If it is too low, the heat removal will be inadequate. Prolyse BV can help you specify the type and size of coolant pump most suitable for your needs.

4. Condenser heat dissipation

The final factor influencing chiller/heat exchanger selection is how the heat removed will be dissipated. Chillers with air-cooled condensors exhaust heat into the surrounding air and require only power and ventilation for operation. Chillers with water-cooled condensors transfer heat to the facility’s cooling water supply.

5. Suggested Chiller Fluid

The most common and acceptable coolant is a mixture of 50% distilled water and 50% ethylen glycol (polycool EG-25). This combination will provide the best results for set-point temperatures between -25°C and +80°C. Although ethylene glycol is not required for set-point temperatures above freezing (0 °C). It is highly recommended as glycol helps lubricate pump seals and fluid temperatures inside the chiller may be below freezing.