Quality Philosophy

Integrating simplicity and innovation into every process.

Dr. Edmund O. Schweitzer, III, the founder of SEL, taught his first employees that they all “owned quality.” Today, we continue to embrace this principle—that quality assurance is a collective responsibility, and every employee plays a critical role.

We recognize that quality isn’t determined by any one department or group—it’s the result of diligent efforts and continuous innovation throughout the entire company. Guided by the principles of World Class Manufacturing and our company values, our employees continually strive to simplify and improve our processes at every level, from design and manufacturing to testing and customer support.

Quality Highlights

“SEL designs, tests, and builds products to the highest quality standards. We empower our employees to take ownership of quality, find the root cause of every problem, and continuously improve processes.”
Adrian P. C. GenzQuality Director


The SEL design process is best summarized by our quality policy: “Understand. Create. Simplify.” The process always begins with our customers as we work to understand their needs and challenges. Driven by these considerations, we create effective solutions using the simplest designs possible—because we believe simplicity is the key to producing efficient, reliable technology.

All our products are designed to operate reliably for over 20 years, even in the most challenging environments. Using robust, type-tested designs, we create devices that can withstand extreme temperatures, corrosive agents, electrical surges, and other harsh conditions—consistently exceeding the highest industry standards for durability and performance.

“All of our work in Research & Development is based on the first principles of engineering. Everything we do should be solving a problem for our customers. We’re constantly asking ourselves, 'How can we improve our designs to add value for our customers?”
Ryan BradetichSenior Vice President of Research & Development

SEL System and Product Certifications

The quality, safety, information security, and environmental management systems that underpin SEL research, development, manufacturing, laboratory, and corporate environments are certified to internationally recognized standards by the British Standards Institution (BSI) and the American Association for Laboratory Accreditation (A2LA).

SEL also works with accredited certification bodies to obtain the product certifications that are necessary for our customers, who operate in a variety of industries and regulatory environments around the world.