The Scientific Approach to Slip Resistance
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THE AMERICAN SLIP METER (ASM 825A OR ASM 925) VS THE BOT-3000E

Are you looking into tribometers? The ASM 825A and ASM 925 may have come up.  As you noticed from the sticker prices, these devices are different from the BOT-3000E – because they are completely different products.

First thing I want to bring to your attention is that the ASM 825A and ASM 925 devices listed on the American Slip Meter website no longer have any ANSI or ASTM standards behind them.  The American Slip Meter used to rely on the ASTM C1028 – Standard Test Method for Determining the Static Coefficient of Friction of Ceramic Tile and Other Like Surfaces by the Horizontal Dynamometer Pull-Meter Method (Withdrawn 2014) – Link

The ability for a tribometer to report results that are repeatable and reproducible are typically documented in an interlaboratory study. I reference two documents, first being the most recent version of the ANSI A326.3 standard released in February 2022 and a research report, written by Eric Astrachan, Executive Director of the Tile Council of North America

I would like to point out that in the ANSI A326.3-21 Standard, Section 12 is dedicated to speaking about the precision, repeatability, and reproducibility of the test method, based on a 3rd party inter-laboratory study.

The research report, referenced above, speaks to the TCNA’s transition from the C1028 (American Slip Meter), to the test protocol described in the ANSI A326.3, which measures Dynamic Coefficient of Friction, using the BOT-3000E.   We hope this helps you make an informed decision when it comes to tribometer selection. 

Please note that the BOT-3000E does have the ability to test both DCOF and SCOF, however, because of the ANSI A326.3 standard requirements, we strongly recommend DCOF.

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