Question
Could someone at UC Davis tell me if in your experience a Durometer gives more consistent readings if used on a motorized stand? In other words, if the durometer tip is contacting the fruit at a steady rate of speed and direction, does this give more reliable readings than using it “hand held”? (K.A.J.)
Answer
The durometer does give more consistent readings if used on a controlled velocity and controlled force stand (not necessarily motorized). Here is one website where you can get an idea of stands available: http://www.rexgauge.com/operating-stands. Look at something like Model OS-2H Operating Stand.
Important features to consider include: Air Dampened Controlled Rate of Descent. This stand features a load weight for the proper testing pressure as noted in ASTM D2240.
I’m sure you can also find other stands that meet these specifications.
--David Slaughter