The ASTM B193 standard is listed in our ASTM standards list however this exact specifications
in the ASTM B193 standard of section of
5. Test Specimen states :
5.2.2 A test length of at least 1 ft or 300 mm.
causes a problem for measuremets.
The test sample minium size as stated in the ASTM B193 standard limits the measurements that can be
performed over a temperature range unless you have a very large furnace or cooling structure.
Instead TPRL uses a standard four-probe electrical resistivity method which can get
equivalent electrical resisivity results without being limted to a large sample size.