Welcome to St. John Associates...

St. John associates manufactures the highest quality fluorometers, luminometers, peptide flask shakers, thermal cyclers and cation exchange resin columns available. For over 18 years we've delivered our instruments with the promise of friendly, experienced service and support. If you're looking for sensitive, reliable instruments and precision cation exchange resins at reasonable prices you have come to the right place.

St. John Associates Products:

*BioOven III™ Thermocyclers


High-capacity, uniformity and flexibility for DNA amplification & more.

*Variable-Rate Flask Shakers


Shake peptide flasks and lab glassware at 2 - 30 agitations per minute.

*Fluoro-Tec™ Filter Fluorometers


Bench and field instruments for fluorescence detection and quantitation.

*Lumi-Tec™ Luminometers


Measure chemiluminescence in cuvette and flow cell configurations.

*Cation Exchange Columns, Resins


Hand-polished, narrow bore stainless steel columns and polystyrene resins.

*Acid Gas & Aerosol Analyzers


Portable battery-powered acid gas & aerosol analyzers with data logging.

Now accepting Visa, Mastercard and Discover!

Now Accepting Visa, Mastercard and Discover!

Now accepting Visa, Mastercard and Discover!