Humic and Fulvic Acid - From Laurentian soil.

Miller Analytical Laboratory Supplies - Manufacturer and distributor of laboratory products. Specializing in TCLP equipment and supplies.

CrudeOils.Com - Crude oils (petroleums) for education and research.

EVHILL - Manufacturer of smoke generating devices used in scientific and industrial applications.

Zefon International, Inc. - Supplier of air sampling equipment including filter membranes and cassettes, Gast and Gilian pumps, Gastec gas detectors, Extech sound meters, light meters, pH meters and anemometers.

ADC Gas Analysis Ltd. - Supply and manufacture infra-red gas analysis equipment for use in: laboratory, emissions control, industrial process control. Full spares and service support.

Comptus Inc. - Manufacturer of weather instruments, designers of electronic and electrical instruments.

EMV Corp - Environmental testing equipment.

Acorn Naturalists - Offers a wide selection of science and environmental education resources for teachers, naturalists, interpreters, outdoor educators, nature centers and camps.

Forestry Suppliers, Inc. - Products for outdoor research specializing in forestry, environmental science, surveying/engineering, horticulture, grounds maintenance, and educational products.

NITON Environmental Instruments - NITON XRF multi-element analyzers, for analyzing metals in dust, soil, filters and other thin films.

Johnston Inc. - Suppliers of water and wastewater treatment equipment and instrumentation including ISCO, ISCO Samplers, odor control, biocube, flow meters, mag meters, wastewater ampler and wastewater treatment