Laboratory Circulators offer four controller designs.

Press Release Summary:

Series VWR(TM) and VWR Signature(TM) heated and refrigerated circulators are available with analog, standard, digital, or programmable controller. Electronic design allows intuitive and user-friendly programming and control. Redundant over-temperature and low liquid level detection safety are located on front of control panel for easy access. All refrigerated models contain purge port for bleeding inert gas, forming blanket over circulator's bath, reducing condensation.

Original Press Release:

VWR International Offers Heated and Refrigerated Laboratory Circulators with Upgraded Electronic Design

WEST CHESTER, PA, September, 2003 - VWR International, a global distributor of scientific supplies, now offers VWR(TM) and VWR Signature(TM) heated and refrigerated circulators featuring newly enhanced electronics that allow easier, more intuitive and more user-friendly programming and control of the units. Other new design features include relocation of the redundant over-temperature and low liquid level detection safety to the front of the control panel to permit easier access. Also, all refrigerated models now contain a purge port for bleeding inert gas, such as nitrogen, to form a blanket over the circulator's bath, greatly reducing or eliminating condensation.

The VWR(TM) heated and refrigerated circulators are available with the choice of four different upgraded controller designs:
o Analog Controller - This economical unit uses a clear, skirted dial to reduce the effects of parallax and permit more accurate temperature setting.
o Standard Controller - Features a larger, green LED readout as well as three user-defined presets to facilitate temperature set for different applications.
o Digital Controller - This controller features a full, backlit, graphic, multi-language display, 0.01ºC stability, five-speed duplex pump and an RS232 interface. The display features a single knob encoder that guides the user through simple-to-understand programs and control of parameters.
o Programmable Controller - Offers all the same features of the Digital Controller, and adds convenient time/temperature ramping programmability and remote temperature capability. The controller can store up to 10 programs of 50 steps each. Microsoft® Excel macros, National Instruments LabVIEW® drivers and Palm OS® software are included for optimum versatility.

VWR International is a global leader in the distribution of scientific supplies, with worldwide sales of more than $2.5 billion. VWR's business is highly diversified across a spectrum of products and services, customer groups and geography. The company offers more than 750,000 products, from more than 5,000 manufacturers, to over 250,000 customers throughout North America and Europe. VWR's primary customers work in the pharmaceutical, life science, chemical, technology, food processing and consumer product industries. Other important customers include universities and research institutes; governmental agencies; environmental testing organizations; and primary and secondary schools. VWR International affiliates operate in 18 countries and employ over 6,000 people. The company's mission is to deliver excellence in the distribution of scientific supplies. VWR International is headquartered in West Chester, Pennsylvania.

For more information on VWR(TM) and VWR Signature(TM) Heated and Refrigerated Circulators, visit, phone 1-800-932-5000 or write VWR International, Inc., 1310 Goshen Parkway, P.O. Box 2656, West Chester, PA 19380-0906.

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