National Testing Laboratories, Ltd. NTL performs water analysis for customers worldwide according to USEPA and Standard Methods. We test for compliance and informational purposes and hold certifications across the United States. The achievement of ISO 17025:2005 accreditation is a confirmation of our commitment to providing the highest quality services and support to all of our customers.
About the author: Marianne R. Metzger is GPG business manager for National Testing Laboratories Ltd. and a WQP editorial board member. Metzger can be reached at mmetzger@ntllabs...
About the author: Marianne Metzger is GPG business unit manager for National Testing Laboratories Ltd. and a member of the Water Quality Products Editorial Advisory Board. Metzger...
About the author: Barbara Marteney is food and beverage business unit manager for National Testing Laboratories Ltd. Marteney can be reached at [email protected] or at 800....
