Floor Slip Resistance Testing – Additional Information

This page explains in more detail the various floor slip resistance tests we do in our certified lab and in the field. If you’d like to order a test, then click on our main Slip Resistance Testing page.

Dynamic Coefficient of Friction (DCOF Rating):

We can run slip resistance tests using these four test methods and instruments, all of which measure dynamic coefficient of friction (DCOF):

  • BOT-3000E Binary Output Tribometer with Neolite, SBR, Four S, TRL, leather or hosiery sliders. Can measure COF up to 1.00. We can test using the ANSI B101.3 (dynamic coefficient of friction) and ANSI B101.1 (static coefficient of friction – SCOF) methods with the BOT-3000E, as well as the new ANSI A137.1 (or ANSI A326.3) dynamic coefficient of friction (DCOF Rating) AcuTestSM that is now part of the 2012 International Building Code.
  • British Pendulum DCOF test (adapted for floors from ASTM Method E 303) with Four-S and/or TRL rubber slider; and EN 13036-4 with CEN rubber slider. The British pendulum is used for our highly recommended Sustainable Slip Resistance test. We can also run an ASTM E-303 test for road skid resistance with the British Pendulum.
  • Tortus Floor Friction Tester Digital Tribometer with Four-S (hard) and/or TRL (soft) rubber slider
  • SlipAlert floor slipperiness indicator

Peak-to-valley surface roughness:

  • Taylor-Hobson Surtronic 10 profilometer

Static Coefficient of Friction (SCOF):

  • Horizontal dynamometer pull-meter (ASTM C1028-07): Laboratory floor slip-resistance tests for SCOF includes a written report signed and stamped by a California-licensed Professional Engineer. We conduct this test but do not offer the apparatus for sale. ASTM, Ceramic Tile Institute of America, Tile Council of North America, University of California Medical Center and Safety Direct America do NOT recommend this method (or any wet static coefficient of friction test) as a primary means of assessing floor slip resistance. [ASTM standards rules allow only test devices that do not involve patented or proprietary technology. For this reason the best test methods for floor friction, except for the pendulum and the BOT-3000E, are not and can not be specified by ASTM standards.]
  • We can also run the ANSI B101.1 static SCOF test, if required.

Field slip resistance test prices are based on time and travel expenses for our technician. Contact us for a quote by email or call 1-800-988-6721.

We presently do (or have recently done) floor slip resistance testing both on-site and/or in our laboratory for two major cruise ship companies, Outrigger Reef on the Beach in Waikiki, Exeter Hospital in New Hampshire, the Ceramic Tile Institute of America, attorneys representing both plaintiffs and defendants, the Cities of New York, San Francisco, Palo Alto and Los Angeles, Cartier, The Montage Resort and Spa, Crowne Plaza Hotels, Intel, Ceramic Tile and Stone Consultants, and many other major international companies all over the USA and beyond.

Ceramic Tile Institute of America endorses the Tortus and the Pendulum. In a study of nine types of tribometers at the University of Southern California Medical Center in which slip-and-fall experts from around the world participated, the Tortus received the highest rating; click here for details on the slip-tester test. SlipAlert has had very favorable reviews from British and Australian government safety research agencies. The static coefficient of friction method ASTM C1028 is principally used for manufacturing quality control purposes rather than assessing slip resistance, but is sometimes specified as an indicator of slip resistance. We recommend using the Tortus or pendulum slip resistance test instead, as these are more reliable and are recommended for slip resistance testing by Ceramic Tile Institute of America. We also recommend the BOT-3000E as it has an ANSI test method (B101.3 dynamic coefficient of friction test) and safety standards for wet slip resistance testing.

ASTM C1028 Slip Test Equipment

ASTM C 1028-07 SCOF Test

Tortus II Slip Resistance Tester (Tribometer)

Tortus II Floor Friction Tester

SlipAlert Slip Resistance Tester


Pendulum Slip Resistance Tester in action

Pendulum DCOF Tester

BOT-3000E Slip Resistance (COF) Tester

BOT-3000E (AcuTest or ANSI A137.1 Slip Test)

Click here to return to our main Slip Resistance Testing page and order your floor DCOF slip test now!