Mark21 - Brochure

The Martek Mark 21 Portable Dissolved Oxygen Analyzer is a completely portable instrument capable of monitoring ultra-low levels of dissolved oxygen in high purity process systems. The Mark 21 can be quickly calibrated in the laboratory according to traceable ASTM standards then carried to the sample panel for direct calibration and/or verification of on-line instruments. This light weight analyzer contains its own rechargeable battery power supply, internal clock, memory, and both analog and digital communications port. The Mark 21’s large back-lit display provides both temperature and dissolved oxygen data in direct engineering units while its menu-driven software makes calibration and logging of data easy and straightforward.