Company Overview
GEO Calibration is a worldwide leader in the manufacturing of temperature and humidity calibration chambers and instrumentation.
Our purpose is to help companies throughout the world to achieve enhanced performance and comply with industry standards for humidity measurement.
We do this by producing and supplying high-precision generators, chambers, instruments and system solutions that measure temperature and humidity and allow for streamlined calibration workflows.
GEO Calibration traces its roots as an international engineering, development and manufacturing company that offered a wide range of products and solutions in the B2B segment. Founded in 1994, the company is headquartered in Ronkonkoma, New York.
The company under CEO, Kamal Mahajan launched the portable humidity generator line in 2003 and has been providing clean and sophisticated solutions to corporate/research labs, independent calibration service labs and various manufacturing segments including pharmaceuticals, chemicals, fuels, automotive, metrology and various industry segments concerned with monitoring and measuring humidity.
Our team is ready to provide you a solution for your workload related to calibration for humidity measurement and monitoring. Our best-in-class system boasts the best accuracy and dependable probe calibration, rapid humidity and temperature stabilization for enhanced workflow and a high design to accommodate volume throughput.
Our support centers offer online chat, video, phone and field support. In addition, an extensive channel partner network to support loaner units and on demand customer service.
On behalf of the GEO Calibration family we look forward to working with you.
Events and Exhibits
NCSLI 2026 Workshop & Symposium
– July 24-29 in Kansas City, Missouri
Looking to expand your expertise, connect with industry leaders, and explore the latest advancements in measurement technology?
Join us at the 2026 NCSLI Workshop & Symposium, taking place July 27–29, 2026 in Kansas City, MO.
GEO Calibration will be exhibiting — visit us at Booths #316 & 318.
Kamal Mahajan, CEO / CTO
As CEO/CTO, Kamal Mahajan leads GEO Calibration, focusing on advanced manufacturing, custom engineering, and systems integration across mechanical and electronic disciplines for commercial, industrial, and military/aerospace markets.
With over three decades of experience, Mr. Mahajan has built a distinguished reputation for designing and developing high-precision temperature and humidity-controlled chambers, purpose-built for relative humidity probes and environmental testing applications. In addition to his role at GEO Calibration, he serves as a Professor at SUNY Farmingdale, Hong Kong and Shenzhen University, where he contributes to the development of future engineers and applied research in instrumentation and control systems.
His expertise in custom system design integrates advanced control technologies, including Watlow microprocessor-based controllers and specialized microprocessing solutions utilizing Atmel’s ATMega644 platform. Through this work, Mr. Mahajan has become a trusted collaborator to national laboratories and leading calibration organizations, supporting the design, integration, and advancement of sophisticated temperature and humidity chamber systems.
Product Demo
See how our calibration units can add value to your facility
On-site Demo