The Ntron Yellow Box is a compact, intelligent, transportable oxygen analyzer providing an affordable and versatile solution for portable high purity oxygen measurement. Housed in a rugged high impact case with microprocessor-based electronics, it delivers accurate, fast, and reliable high purity analysis in demanding field applications.

The analyzer is available with multiple measurement configurations: a long-life zirconia sensor for ppm oxygen measurement, or electrochemical sensors for percent-level analysis. Dual analyzer versions can simultaneously monitor ppm and percent O2 levels, eliminating the need for two separate instruments. An integral flow meter ensures consistent sample delivery for repeatable results.

The Yellow Box is powered by either mains or a rechargeable battery pack, making it suitable for both laboratory and on-site use. Typical applications include semiconductor manufacturing gas purity verification, pharmaceutical blanketing gas monitoring, food packaging modified atmosphere quality control, and laboratory research.