Innovators of Magnetic Particle Inspection Materials for 40+ Years

Circle Systems manufactures testing solutions designed to increase the performance of your inspection and reduce the cost of your MPI operation.

Leading the Way in Service and Chemical Technology for the MPI Industry

Personalized Customer Service

Dedicated Account Rep
Direct Access to scientists for support

Cost Effective Solutions

Designed for Efficiency
Use up to 55% less product

Best in Class Technology

State-of-the-Art
Chemical Technologies
& Best-in-Class
Manufacturing Methods

Circle Systems Is Borate Free

Products available that meet world-leading
European standards

Made In The USA

Proud to be US-Based in Manufacturing
& Support

Our Solutions

Circle Systems Provides A Full Range of Magnetic Particle Testing Solutions.

Mi-Glow® products offer fluorescent and  nonfluorescent magnetic particles for use in wet  method inspection. These materials include unique  application materials such as underwater inspection  media, convenient packaging such as the new  Magpac™ products, and a full line of supporting  materials such as white contrast paint, corrosion  inhibitors and advanced wetting agents.

CircleSafe® is a complete line of magnetic inspection aerosols. Our CircleSafe® products are packaged with a carbon dioxide propellant to reduce the environmental and safety hazards typically associated with butane and propane propellant based aerosols. CircleSafe® aerosols are available in fluorescent yellow-green, nonfluorescent black or dual red particles in either water or oil media.

logo-sir-chem

Mi-Glow® products offer fluorescent and nonfluorescent magnetic particles for use in wet  method inspection. These materials include unique  application materials such as underwater inspection  media, convenient packaging such as the new  Magpac™ products, and a full line of supporting  materials such as white contrast paint, corrosion  inhibitors and advanced wetting agents.

logo-circle

About Circle Systems

Circle Systems has been developing and manufacturing magnetic inspection particles for over 40 years. Magnetic particles are our primary business. Originally named Circle Chemical Co., we have been rooted in the chemistry of magnetic particle inspection since our early days.

Our Solutions

Our approach has led to products that utilize state of the art chemical technologies, best in class manufacturing methods, and a broad product line that is unmatched in our industry. 

Circle Systems has established our reputation as a trusted supplier to some of the most notable manufacturers and nondestructive testing companies around the world.

Circle has great customer service that is very responsive. I like that I always get a live person, not a recording, when I call Circle. Circle has a very good range of MT products with excellent delivery times.