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Learn More About RSR Analytical Laboratories and Our Principal Scientists Learn More About RSR Analytical Laboratories and Our Principal Scientists

About RSR Laboratories

Team Biographies

Anthony J. Repay, M.S.

 Director of Microbiology 


Joseph A. Haun

 Q.A.  Manager


David Luttrull, Ph.D

 Laboratory Director

Dr. David Luttrull earned a Ph.D in Physical-Organic Chemistry from Arizona State University in 1991 with a dissertation in the area of artificial photosynthesis and earned a NSF Postdoctoral Fellowship at  the Center for Change Transfer Studies at the University of Rochester. He began his career as a Senior Chemist in 1992 at Nalco Chemical in Sugarland, TX, where he developed and synthesized gasoline additives. In 1997, he accepted a position as a Material Scientist, which quickly became an R&D Director position at Neltec, INC., in Tempe, AZ. In 2004, he went to work for Rosestreet Labs, in Phoenix, and in 2007, Dr. Luttrull started up his own analytical lab, MG Lab Services (Malcom Grey, LLC). Dr. Luttrull’s activates included consumer product testing for Lead (Pb) and cadmium (Cd), precious metal assays for small mining companies, diagnostic chemistry for forensic engineering companies, analytical support for electronic materials manufactures and military contractors.

                In 2010, Dr. Luttrull accepted the position of Sr. Director of Emerging Technologies at Isola Group. Isola Group is a large dielectric materials manufacturer based in Chandler, AZ. Isola approved Dr. Luttrull’s proposal to build a million dollar laboratory facility, which included a new 300MHz NMR. Dr. Luttrul left the Isola Group in the late 2013 to pursue chemical consulting and new product ideas. Dr. Luttrull has over twenty one publications, including two patents and nine scientific papers in peer-reviewed journals.

                Dr. Luttrull will serve as a paid consultant to CANNEX Nevada, LLC with the responsibilities to oversee the training of methodologies, lab set-up and the proper use of all testing instrumentation. This will ensure that all testing is performed consistent to the testing standards set forth in NAC 453A Sec.118.

State Licensed & Certified

We are a state licensed marijuana testing laboratory. We are ISO-17025: 2017 accredited through ANSI National Accreditation Board, Certificate Number: AT-2648.

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Testing Innovation

Our team has developed an innovative series of sample preparation methods to work with various raw materials, extracts, oils and topical applications.

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Fast & Reliable

We have a state-of-the-art laboratory facility which is equipped with the most up-to-date instruments.  Our advanced instrumentation has the capability to achieve better separation, lower detection limit and reduce the matrix effect in the extracts.

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