The Modified Transient Plane Source (MTPS) technique developed by C-Therm Technologies Ltd. provides a rapid convenient test method for the thermal conductivity characterization of solid, liquid, powder and paste materials under 100 W/mK and is designed to provide simple, highly accurate thermal characterization for lab, quality control and production environments. This paper compares MTPS testing results with other traditional techniques for thermal conductivity measurement and the modified hot-wire (MHW) technique recently developed at the University of New Brunswick for testing low-conductivity solid materials. A statistical comparison of results is presented on various different solid and liquid materials in order to establish the equivalency between the thermal conductivity measurement techniques. Materials tested include: LAF foam, PYREX glass, PDMS (poly dimethyl siloxane silicone) and water gel.