DeFelsko® Plastic Shims for Coating Thickness Instruments

Thickness Standards are used to verify the accuracy and operation of coating thickness gauges.  As a component of ISO 9000 or in-house quality control procedures, they are a practical alternative to sending instruments to DeFelsko for calibration.

These Plastic Shims (aka foils) are low-cost alternative to coated metal plates.  They are available in Certified (individual shims or full sets) and in Un-Certified sets.  Accuracy is somewhat less than metal plates and they are more sensitive to heat. They are intended for use over a Zero Plate, or over an uncoated substrate.

A set of un-certified plastic shims is included with most electronic DeFelsko coating thickness gauges.  Replacement sets and certified options are available here as follows:

• Un-Certified.  These are checked for accuracy within tolerance shown below at DeFelsko, but are not traceable to any standard. They come as a set of 5 only, in the following approximate thicknesses:
  • 25 microns / 1 mil (Orange), +- 20% accuracy
  • 50 microns / 2 mils (Red), +- 10% accuracy
  • 125 microns / 5 mils (Blue), +- 5% accuracy
  • 250 microns / 10 mils (Brown), +- 5% accuracy
  • 500 microns / 20 mils (Yellow), +- 5% accuracy
• Certified.  Includes certificate of calibration traceable to PTB and all are accurate to within 2 microns / 0.08 mils.  Available in the following thicknesses individually, or as a complete set of 8 shims:
  • 25 microns / 1 mil (Orange)
  • 50 microns / 2 mils (Red)
  • 75 microns / 3 mils (Green)
  • 125 microns / 5 mils (Blue)
  • 250 microns / 10 mils (Brown)
  • 500 microns / 20 mils (Yellow)
  • 1000 microns / 40 mils (White)
  • 1500 microns / 60 mils (Black)