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Tannas Co. & King Refrigeration, Inc. Precision Laboratory Instruments for Routine Testing and Advanced Research & Development of Engine Oils, Lubricants, and Related Fluids

Frequently Asked Questions

Have a question about an instrument?  We’re here to help. Select an instrument below to find answers to some of the most frequently asked questions about that instrument.

If your question isn't answered here, our trained technicians and Instrument Engineers are ready to respond.  Send your question or service request via our Service & Training Request Form by clicking the button below:


Our friendly Service & Logistics Team is ready to help you with your orders and schedule your shipments.  They include, from left to right: Steve, Ken, Stephanie, Ray, Deanna, Cindy, Tim, and Janet.

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Our certified Instrument Engineers include, from left to right:  Andrew, Calvin, Rob, Ryan, and Nick.

Technical Service Inquires

If you would like to speak to our Technical Service team, please call or email us using the contact information below.  

We are committed to responding to all requests within one business day, during normal hours of operation, Monday - Friday, 8:00 AM to 5:00 PM, Eastern Standard Time.

Tannas Company


PHONE: +1 (989) 496-2796
FAX: +1 (989) 496-3438

King Refrigeration

  King Refrigeration

PHONE: +1 (989) 698-5500
FAX: +1 (989) 496-3438