Bay Instruments MIMS

Manufacturer of high precision membrane inlet mass spectrometers

 Unrivaled speed and precision for dissolved gas measurements

 Instruments in 13 Countries

The Bay Instruments membrane inlet mass spectrometer (MIMS) is the de facto standard for denitrification studies which demand the highest precision for N2 and N2/Ar ratios.  Our MIMS is the instrument of choice for government and academic researchers, oceanographers, and environmental scientists who require precise measurements of dissolved gases in water. Our applications have grown over the last 25+ years to encompass denitrification, ecosystem oxygen studies, trace environmental gases, and stable isotope studies. Our MIMS provides high precision, rapid analysis, and small sample size capabilities with a small footprint that makes it an excellent candidate for field applications.

Bay Instruments MIMS


MW/SE Photosynthesis Meeting 
Turkey Run State Park, Marshall, IN
October 26-28, 2018

Todd Kana and Chih-Hsien (Michelle) Lin of Bay Instruments will be available for questions and demonstrations of the Bay Instruments MIMS and the Walz MINI-PAM.

Western Photosynthesis Conference
Harbor, Washington
January 3-6, 2019

Exetainer Sample Vials available in our store now

Offering the extensive line of Walz PAM fluorometers and gas exchange instruments

Known widely for their PAM fluorometers, Walz focuses on photosynthesis instrumentation. This is a natural addition to our expertise, building on 25 years of research and teaching PAM fluorometry, coupling with MIMS and the Walz PAM fluorometer in research. Look for new products capable of linking the MIMS and PAM in future.


Pfeiffer Vacuum Distributor

We have 25 years of experience with Pfeiffer Vacuum mass spectrometers and vacuum equipment

 and can provide equipment across their entire product line at discounted prices.

Contact us for a quotation.

PrismaPlus IO Module