About Us

Environmental Laboratory Testing

5-Day Standard Sample Turnaround

Since our inception in 1989, we have offered a reliable 5-day standard sample turnaround time, where the industry standard is 2 to 3 weeks. Many labs say they can offer a 5-day turnaround time, but few can do it reliably day in and day out as we have for over 25 years. This is just one of the many examples of how our laboratory exceeds the standard. “Exceeding the Standard” has been our focus from day one and will remain our focus for the future.

Expedited Service

Three, Two, Next Day and Emergency Services are our Specialty

Rapid, reliable sample turnaround time has always been our specialty. Our claim to fame has always been our ability to do what other labs cannot. We routinely provide 3-day, 2-day, next day, and emergency service on most of our analytical offerings. When time matters, we deliver, that is why we have such a loyal client following and excellent client retention. Few labs can make that claim.

NELAP Accredited

Certified in all EPA Region 3 States

Phase Separation Science joined the National Environmental Laboratory Accreditation Program (NELAP) before it was required as a demonstration of our commitment to quality. We currently maintain NELAP accreditation under the Pennsylvania and Virginia laboratory accreditation programs for almost all the methods we perform for Drinking Water, Non-Potable Water, Air, and Solid samples. Additionally, we have maintained accreditation consistently in Maryland and in West Virginia. We routinely provide data for compliance with regulatory programs in Delaware and the District of Columbia.

Experience and Consistency

Since 1989 Same Name, Ownership and Location

Since 1989, our laboratory has had the same name, ownership, and location. To date, we have performed well over a million analyses as we work through our third decade of operation. We have maintained the experience and consistency often lacking in our industry.

Making it Easy

Sampling Supplies, Courier Service & 24/7 Access to Data

We make it easy. We provide sample collection kits including containers, labels, chain of custody forms, and coolers. Additionally, we provide courier service to pick up samples and 24/7 access to your data through our WebLIMs portal.

Directions to the Lab


6630 Baltimore National Pike
Baltimore, MD 21228
Phone: 410.747.8770 or 800.932.9047
Fax: 410.788.8723
Email: info@phaseonline.com

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