IQS Directory provides an extensive list of calibration laboratory companies in Illinois. Utilize our website to review and source calibration laboratory companies with our easy-to-use features which allow you to locate calibration laboratory companies that will provide calibration services for your exact specifications. Our request for quote forms make it easy to connect with leading calibration laboratory companies. View company profiles, website links, locations, phone number, product videos, customer reviews, product specific news articles and other production information. We are a leading manufacturer directory who will connect you with the right providers whether you are looking for hardness testing, load cell calibration, or speedometer calibration.