Get Affordable Optical RDO Technology with the New Oakton Waterproof DO 450 and pH/DO 450 Meters from Cole-Parmer

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Advanced technology reduces maintenance and costs

Optical RDO technology is now a cost-effective option for dissolved oxygen meter users. The new Oakton® Waterproof DO 450 and pH/DO 450 Meters from Cole-Parmer are optical meters—with the convenience of no membrane replacement, no electrolyte replacement, no incoming flow requirement, and no hydrogen sulfide interference. The meters also offer a short response time, minimal drift, and minimal maintenance.

Users gain more accurate readings on these DO meters with automatic and manual temperature compensation, which adjusts for fluctuating temperatures. They can see more data at a glance by viewing measurements with temperature and calibration data on a large, backlit display. Up to 500 data sets can be stored and easily downloaded with USB or RS-232 cable.

The Oakton DO 450 meter features manual barometric pressure and salinity corrections. It also includes an annual sensor cap replacement. The Oakton pH/DO 450 meter offers six-point calibration—either USA, NIST, DIN, or custom buffers. Convenient auto buffer recognition automatically identifies the correct pH meter buffer for rapid calibration.

To view the new line of Oakton DO meters, go to or, for more information, call 800-323-4340.

Cole-Parmer has been a leading global source of laboratory and industrial fluid handling products, instrumentation, equipment, and supplies since 1955. Our product lines, including popular brand names such as Masterflex®, Oakton®, Digi-Sense™, and more, are sold through company-owned customer channel outlets and a strong network of international dealers. We also feature an ISO17025-accredited metrology lab for instrument calibration and repair. Cole-Parmer responds with excellence to customer needs, and offers application expertise and technical support. For more information, contact Cole-Parmer, 625 East Bunker Court, Vernon Hills, IL 60061. In the US, call 800-323-4340. International customers, call 847-549-7600. Visit us at

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Beth Dumey
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