A four-generation family business rooted in Cleves, Tisch Environmental has been shaping air science since 1954 and became 100% employee-owned through an ESOP in 2023. The company is known for keeping its precision air-sampling heritage local while serving environmental agencies and scientists worldwide.
US EPA Federal Reference Method (FRM)
Compliance program
US EPA Federal Equivalent Method (FEM)
Compliance program
ISO 9001:2008 Registered Facility
Registration
NIST-Traceable Calibration
100% Employee-Owned ESOP
Compliance program
EPAFRM
Quality certification
EPAFEM
Quality certification
Eisco GroupFamily-owned since the 1940s, Eisco Group makes science and laboratory equipment through a portfolio that spans educational products, industrial supplies and precision lab glassware. The group has grown into a global business with more than 600 employees across India, the USA and the UK, while its newer brands extend into science-focused homeware and bespoke travel experiences. Eisco Group is now carried into its fourth generation and holds ISO 9001 and ISO 14001 certifications.HONEOYE FALLS, NY
CECO EnvironmentalWith more than a century of industrial innovation behind it, CECO Environmental has grown from its origins as Claremont Engineering into a diversified company focused on protecting people, the environment, and industrial equipment. Its 1,600-plus employees work from more than 25 principal facilities to support industrial customers in over 40 countries, with a record that includes more than 32,000 installed air-pollution-control systems.CINCINNATI, OH
CECO EnvironmentalCECO Environmental traces its heritage to more than a century of industrial innovation, including origins as Claremont Engineering and a broader history reaching back to 1869. Today, the diversified industrial company serves customers in more than 40 countries through over 25 operating facilities, drawing on more than 30 brands to address environmental and equipment-protection challenges. CECO is especially known for its large installed base of air-pollution-control systems, with more than 32,000 systems deployed worldwide.WEXFORD, PA
Glasfloss Industries, IncGlasfloss Industries, Inc. manufactures HVAC air filters and filtration media, a business begun in New York City in 1936 by engineers Horace R. Lange and Theodore J. Tottis. It grew from a special-size filter fabricator into a full-line manufacturer operating five U.S. manufacturing facilities, and became 100% employee-owned and operated in 2023. The company is particularly known for commercial and industrial air filtration products.LANCASTER, OH