Who We Are

We are a dedicated group of individuals whose years of experience has kept us a step ahead of our competition as a leading manufacturer of disposable Silver/ Silver Chloride Coated Electrode Sensors. Our exceptional product is distributed world-wide for many applications and our yearly part distribution exceeds billions of pieces. It is through our commitment to a quality product, continual improvement, external provider commitment, on time delivery, team member focus and strong customer relations that allows us to maintain our status as a world class manufacturer. At Select Engineering our guidelines are simple “provide product that exceeds our customer’s expectations”.

About Us

In July of 1988, Steven R. Aho, President, and Rene Rainville, Vice President, started Select Engineering as a small business with just seven employees operating out of a leased 7,000 square foot facility in Leominster, Massachusetts. Since then, the company has expanded into two company owned facilities: a 42,000 square foot operations facility and a 15,000 square foot injection molding facility, both in Fitchburg, Massachusetts.

Know More

Select Engineering - Manufacturers of Disposable Silver / Silver Chloride Coated Electrode Sensors

  • We provide comprehensive engineering and manufacturing services to manufacturers requiring high-performance disposable electrode sensors.
  • We use an unrivaled program of stringent visual, dimensional, and electrical inspection.
  • It is our mission to provide our customers with a product which will meet or exceed their expectations.
  • We have implemented a strong commitment to continual improvement through management and employee participation in all our engineering, manufacturing, and quality processes.
  • Our success has been achieved through customer communication and dedication to high quality products.
  • Providing Industry standard and custom design products.

Contact us


“Overall the service we receive from Select Engineering has been excellent and the quality of products is superior and works well in the products we manufacture. All shipments are made on time and according to schedule. Thanks for all you help with our projects and requirements.”

Superior Quality

“We want you to know that we are pleased with the quality of service your company provides, we sincerely appreciate your responsiveness and the way you conduct business and we rely on dependable service from the suppliers like you to help us keep our schedule and satisfy our customer. Thank You and we appreciat

The way you conduct business

“Select Engineering is one of our consistently high performing suppliers. You are very user friendly and quick to respond to any of our inquiries or concerns. Your deliveries are always on time. In checking with our quality and manufacturing departments, there are no concerns with regard to the quality of pro


“I wish all suppliers were as easy to work with as Select Engineering. You confirm PO’s quickly, your lead times are short, you ship on-time, you reply to requests and questions ASAP. We have had no quality issues or problems with your products that I can think of. You guys are fabulous in my book!”