Grete Heimerdinger was a science teacher in Stuttgart, Germany, before moving to the United States, where she has been vice president of Lignomat USA for the past 30 years. Along with being actively involved in product development, she is a member of the ASTM task groups C11 for measuring moisture in gypsum, and ASTM F-2170 for measuring moisture in concrete. For more information visit Lignomat’s website at www.lignomat.com.