Edge-On-Up PT50A Industrial Sharpness Tester

The Edge-On-Up PT50A is the flagship sharpness tester in the Edge-On-Up lineup. Wondering if your kitchen knives require sharpening? Interested in assessing your extensive knife collection? Or eager to determine the effectiveness of your sharpening efforts? This tester precisely measures the pressure required to cut through a testing medium, with an increment of 1 gram.

Compared to other models, the Edge-On-Up PT50A boasts superior sensor capabilities and a faster processor, ensuring even more accurate measurements of knife sharpness. Meanwhile, the Edge-On-Up PT50C measures in 25-gram increments, and the PT50B measures in 5-gram increments.

This scientifically designed tester assesses knife sharpness using a certified synthetic wire. Simply apply gentle pressure to the wire with your knife. The accompanying scale records the pressure exerted until the wire is cut, providing your test result in grams on the BESS (Brubacher Edge Sharpness Scale) C-scale. A lower BESS value indicates a sharper knife, offering a concrete numerical assessment of sharpness that eliminates guesswork.

The BESS standard, developed by Mike Brubacher, offers a user-friendly method for evaluating knife sharpness. Scores on the scale range from 2000 BESS for an unsharpened knife to 0 BESS for ultimate sharpness. For reference, a double-sided sharpened razor typically scores around 50 BESS.

Given that the test measures only a small portion of the edge, it's recommended to assess three areas: the tip, middle, and heel. A weighted average of these values provides a comprehensive assessment of sharpness.

For accurate comparisons, certified test materials are necessary. Edge-On-Up provides the required materials, including the DoubleX test medium capable of conducting 325 measurements.