Testo said it will introduce its high-performance, low-cost Testo 550 Refrigeration System Analyzer, for calculating superheat and subcooling in real time. According to the company, the 550 is ideal for servicing, maintaining, and commissioning all types of air conditioning systems. Use the 550 to perform leak tests on AC/R systems plus know when you have reached limits evacuating a system. It comes in a rugged, compact unit with a large, backlit display.

Testo Inc., 40 White Lake Road, Sparta, NJ 07871; 800-227-0729; info@testo.com; www.testo.us