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Testo Inc is a world leading designer and manufacturer of high-quality test and measurement instruments backed by over 50 years of engineering experience and success. Testo is also the world's leading manufacturer of portable combustion and air emissions analyzers. Recently Testo has unveiled a high-tech line of HVAC analyzers including the Wireless Smart Probes that are dominating a new sector of the testing market. Testo was founded in 1957 in Germany and continues to provide a high standard of quality through 32 subsidiaries and over 60 agents across the globe. Most Testo measuring instruments offer NIST calibrations, as well as ISO 9001 quality standards.

Get Deals on best-selling Testo 550s, 557s, and 550i Digital Manifolds, and Testo 0563 0002 20 Smart Probe AC and Refrigeration Test Set.

Introducing New Testo 560i Refrigerant Scale and Intelligent Valve Kit 0564 2560 01 for automatic charging of refrigeration systems and heat pumps.

Save on Testo 300 and Testo 310 Combustion Analyzers.