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QED Environmental Systems was established in 1982. Since our inception by industry experts who were eager to provided sound, scientific solutions to an industry in need. We have been a leading manufacturer of environmental monitoring and remediation ...

Since 1995, Sequoia Scientific, Inc. has been the global leader in technologies for submersible and field measurements of suspended particles, and particle size distributions. Sequoia invented the LISST series of aquatic science sensors in 1995. ...