CK Supply Delivers Specialty Gas Expertise to the Midwest

For more than 77 years, CK Supply has supported businesses, laboratories, healthcare organizations, and research institutions with dependable gases, equipment, and technical expertise. Headquartered in St. Louis, CK Supply is a local, independent, family- and employee-owned company serving customers throughout Missouri, Illinois, and the greater Midwest.

While the company is also widely known for its industrial gases, welding equipment, and dry ice, specialty gases are a particularly important part of CK Supply’s capabilities. Its St. Louis headquarters houses a dedicated specialty gas laboratory and sales department focused on supplying the precise, high-quality products required for scientific, medical, environmental, and industrial applications.

CK Supply offers an extensive range of specialty gas products, including high-purity gases, custom mixtures, calibration standards, certified and primary standards, EPA Protocol gases, medical gases, hydrocarbons, rare gases, disposable cylinders, and food-and-beverage-grade gases. Its portfolio serves customers across biotechnology, pharmaceuticals, healthcare, research, higher education, environmental monitoring, electronics, manufacturing, petrochemicals, utilities, and food and beverage production.

Consistency and accuracy are essential when gases are used to conduct research, calibrate sensitive instruments, validate medical advances, or maintain regulatory compliance. CK Supply supports these demanding applications with carefully controlled preparation, analysis, documentation, and packaging processes. Its specialty gas laboratory is independently audited and certified by AsteRisk, helping ensure that established standards for quality, consistency, accuracy, and integrity are maintained.

Through its relationship with the Independent Welding Distributors Cooperative, CK Supply also provides PurityPlus specialty gases and equipment. The PurityPlus network includes 12 ISO/IEC 17025-accredited laboratories and enables CK Supply to source rare gases, highly specific mixtures, and certified standards for customers with complex requirements. PurityPlus products are prepared under stringent quality-assurance procedures, with calibration standards traceable to recognized national references where applicable.

CK Supply’s capabilities extend beyond the gases themselves. Customers can also turn to the company for regulators, manifolds, flowmeters, cryogenic dewars and hoses, gas purifiers, filters, generators, safety equipment, laboratory monitoring systems, and other components needed to create a complete gas-delivery solution. The company provides equipment sales and rentals, technical assistance, delivery planning, and support in developing effective laboratory practices.

This combination of laboratory capability, product breadth, local service, and technical knowledge allows CK Supply to meet both routine and highly specialized needs. Whether a customer requires a common high-purity gas, a NIST-traceable calibration standard, a custom blend, or a complete laboratory gas system, CK Supply works closely with the organization to understand the application and provide an appropriate solution.

CK Supply began operations in 1948 as a distributor of gases and welding equipment. The company opened its specialty gas laboratory in 1993 and has continued investing in the facilities, technology, and expertise needed to serve increasingly advanced applications. Today, its automated fill plant and analytical laboratory can fill and test hundreds of cylinders daily, helping customers receive the purity, consistency, and timely service their work demands.

As the Midwest’s bioscience and research communities continue to grow, CK Supply provides a valuable local resource for organizations whose work depends on precise and reliable gases. Its employee owners remain committed to responsive service, long-term customer relationships, and practical solutions that help researchers, manufacturers, and healthcare professionals move their work forward.