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September 2007 | Volume 2| Issue 2

FEATURE ARTICLE:
Environmental Testing Lab Develops Method for Determination of PCBs in Water Using Horizon Technology Solution

Polychlorinated Biphenyls (PCBs) are a
worldwide contamination problem. Because PCBs are long lived in the environment and bioaccumulate throughout the food chain, a great deal of research has been done, and regulations implemented. Environmental lab, Northeast Analytical met the challenge by optimizing an SPE method based on the Horizon Technology SPE-DEX 4790 instrumentation.

The result was an SPE method that eliminated 90 percent of solvents when compared with the conventional methods, exhibiting a significant reduction in purchase and disposal costs of chlorinated solvents such as methylene chloride. It also greatly increased the safety in the lab by reducing potential exposure of workers to the solvents.

... read the full story click here

DID YOU KNOW?
You Should Rebuild Your Water Inlet Valves Every Six Months

Over time, water inlet valves on both the Horizon Technology SPE-DEX 1000 and 3000 Extractors become dirty. Some parts such as the solvent rods and O-ring can become brittle, causing the valve to become difficult to open - putting added stress on your extractor.

For these reasons, it is important to rebuild rebuild your valves at least once every six months. Rebuilding the valves is a straight forward process that can be done in about 15 minutes, with few tools and parts. ... download this valuable tech tip here.

If you have any questions about rebuilding you valves, please send an email to service@horizontechinc.com.

If you would like to place and order for parts to rebuild your valves, please contact orders@horizontechinc.com.