General Sales Questions and Orders
Humboldt Mfg. Co.
875 Tollgate Road
Elgin, IL 60123
Office hours are Monday to Friday, 7:00am to 5:30pm CST.
Humboldt Scientific, Inc.
2525 Atlantic Ave.
Raleigh, NC 27604 USA
Office hours are Monday to Friday, 8:00am to 5:00pm EST.
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