Background
Gray, David Marshall was born on October 30, 1947 in Fostoria, Ohio, United States.
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David Marshall Gray
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David Marshall Gray, American Chemical engineer. Achievements include original design and product development of stateof the art pH control instrumentation introducing pH characterization to enable convenient correction for non-linearity of pH versus reagentdemand; developed exceptionally accurate temperature compensation algorithms for high purity conductivity measurements.
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Education
BSChE, Case Western Reserve University, 1969.
Career
Product engineer, engineering specialist, Leeds & Northrup, North Wales, Pennsylvania, 1969-1988; senior applications specialist, Leeds & Northrup, North Wales, Pennsylvania, 1988-1994; application manager, Leeds & Northrup, North Wales, Pennsylvania, 1994-1995; product manager, Thornton Associations Inc., Waltham, Massachusetts, since 1995.
Achievements
Membership
Member American Society Testing and Materials (task group chairman since 1991), Instrument Society of America (senior member).
