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Quiz Leaderboard: 10/26 - 11/25/2015    Sign in to track your quiz score! | Full Leaderboard

  • 1. Robert Cloutier (22/22 answered correctly)

  • 2. Mark Allen (22/22 answered correctly)

  • 3. Mark Gierke (22/22 answered correctly)

  • 4. Juan I. Ordinas (22/22 answered correctly)

  • 5. Roland Peemans (22/22 answered correctly)

  • 6. Stephen Lipsham (21/22 answered correctly)

  • 7. Gustavo Vidal (21/22 answered correctly)

  • 8. Dave Heyne (21/22 answered correctly)

  • 9. Matt Burst (21/22 answered correctly)

  • 10. Michael Beitzel (21/22 answered correctly)

  • 11. William Turcotte (21/22 answered correctly)

  • 12. Brian McEwen (21/22 answered correctly)

  • 13. Doug Driscoll, Sr. (21/22 answered correctly)

  • 14. David Zuskin (21/22 answered correctly)

  • 15. Gunnar Ackx (20/22 answered correctly)

  • 16. Douglas Steitz (20/22 answered correctly)

  • 17. Shabbir Hussain Shah (20/22 answered correctly)

  • 18. arieh calahorra (20/22 answered correctly)

  • 19. Bryon Beck (20/22 answered correctly)

  • 20. Robin Hasak (20/22 answered correctly)

Wednesday, February 19, 2014

High-pressure, supplied-air respirators are given an Assigned Protection Factor of 25 by NIOSH. What does this 25 mean?

The wearer can be exposed to particulates of 25 microns or smaller.
The wearer can be exposed to breathable material above its OSHA Permissible Exposure Limit for 25 minutes before exiting the exposure zone for at least 10 minutes.
The wearer can be exposed to contaminants in a concentration of up to 25 times OSHA’s Permissible Exposure Limit.
None of these

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Previous Quizzes from the Past Week

Tuesday, February 18, 2014
True or false: With zinc-rich coatings on steel, the zinc becomes the anode in a galvanic cell and sacrifices itself to protect the cathode, the underlying steel.

Monday, February 17, 2014
True or false: A Bresle patch is used to treat dynamic cracks in concrete, especially in secondary containment structures around tanks.

Friday, February 14, 2014
True or false: Krebs units are units of elasticity of a paint.

Thursday, February 13, 2014
True or false: If a zinc-rich coating has an epoxy binder, it is classified as both an organic and an inorganic zinc-rich coating.

Tuesday, February 11, 2014
What happens to the condition of a steel substrate when waterjet cleaning is used to remove rust or existing coatings?

More previous quizzes

Clemco Industries Corp.
Powerful Protection in a Small Package

Mounts inside blast helmet, alerts operator to dangerous breathing-air condition by audible, visual, and vibratory alarms. Easily calibrated, battery operated.

RPB Respiratory

With RPB Safety’s new Nova 3 Cassette Lens System which has been specifically designed to save you time and money! See the benefits for yourself now!

Graco Inc.
Graco Mortar Pump

The M680 sprays epoxy-based mortars, anti-skid coatings, cementitious and filled materials. Compact.
Easy to use.
Call 877-844-7226 or

Nationwide Overspray
Profession Overspray Removal Services

The Finest Name in Safe Overspray Removal. We specialize in removing all contaminants from any surface. Family Owned and Operated for 33 years! Fully insured. Satisfaction is guaranteed.


The Next Generation
of Blasting

• Lightest
• Coolest
• Most Comfortable
• Most Dependable

SABRE Autonomous Solutions
Safety, Productivity, Quality. Robotic Blasting

Learn how this simple to use, field deployed, automatic robot is eliminating hazards in major confined, cluttered and complex surface preparation projects.

Armakleen Company, The
ARMEX when nondestructive cleaning is critical

When cleaning substrates that cannot be damaged the only blast abrasive to use is ARMEX. Other blast abrasives can remove surface materials damaging the substrate.

U.S. Zinc
Logistics. Rely On U.S.

Whether via rail, truck, sea or air, you can trust our logistics services to deliver the product you need on time, every time.

ITW Binks
Built for Tough Jobs

From Epoxies to Urethanes to other high solid coatings, the new Binks Airless 75 delivers a great finish using an ergonomic design. Visit for more information.

Fischer Technology Inc.
DUALSCOPE®FMP100 with DataCenter IP

Transfer customized inspection plans from PC to FMP100 using step-by-step guidance with prompts and pictures throughout the measurement procedure

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