When it comes to portable octane testing, there is simply no other choice. Over 30 State Governments rely on the Zeltex ZX-101 Family of Analyzers to protect their constituents from poor quality fuels.

Across the United States, and 40 countries world wide, Zeltex Fuel Analyzers have established themselves as the instrument of choice when it really matters.

Leading the industry in Near IR Octane analysis, our instruments also provide you with accurate and dependable Cetane number and index readings.

Moving into 2003, we are expanding our technology and services to provide a Bio Diesel analyzer, which will provide you with a 60 second reading of the percentage of Bio Diesel in Petroleum Diesel Fuels.

Zeltex remains the only choice.