AGR International, Inc., founded in 1927 and based in Butler, Pennsylvania, is a leading supplier of quality assurance and process automation equipment for the global packaging markets, particularly in the glass and plastics industries. Originally established as Preston Laboratories, AGR has evolved to become a recognized authority in container manufacturing and quality control.

The company provides a wide range of products and services, including on-line and laboratory inspection equipment, pressure testers, and comprehensive research and testing services through its division, American Glass Research. AGR also offers consulting and training to help manufacturers optimize their processes and maintain high-quality standards. With a strong global presence, AGR serves a diverse clientele in the packaging industry, focusing on manufacturers and fillers of glass and plastic containers.

In March 2024, AGR was acquired by Indicor, reinforcing its commitment to quality and sustainability in the packaging sector. With nearly a century of experience, AGR International continues to be a key player in ensuring the reliability and quality of packaging solutions worldwide.