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Standards and Shims

General Q&A

What are my choices?

DeFelsko offers a variety of certified thickness standards, certified shims, and non-certified shims as accessories to our coating thickness gages. They may also be used with many competitive models.

How do I select the appropriate product?

STANDARDS are the best solution for verifying the calibration and operation of any coating thickness gage (including pull-off gages) and for fulfilling both ISO and in-house quality control requirements. They are accurate to within ±0.01 mil (±0.25 µm). Prices range from $95 for individual plates to $345 for sets. (see Standards Q&A).
< 1500 µm
> 1500 µm

 

CERTIFIED SHIMS Simulate a coating over the customer's particular substrate material or shape. Gage performance can be conveniently verified on a regular basis as called for by some international test methods. Unlike coated STANDARDS they can be used for verification and adjustment directly over the customer's unusual substrate shapes and conditions. They also provide an economical alternative to STANDARDS with a reduced accuracy of ±0.1 mil (±2.5 µm). They are not appropriate for use with pull-off gages. Prices range from $45 for individuals shims to $195 for a set of eight. (see Shims Q&A).

NON-CERTIFIED SHIMS provide a quick operational check of the instrument by allowing the user to perform practice measurements. They can also be used to protect the probe when measuring on tacky, rough or hot surfaces. They are not appropriate for use with pull-off gages. Price for a set of five is $10. (see Shims Q&A).

How often should they be changed?

User specific calibration intervals should be established based upon frequency of use, handling practices and measuring environment. Visibly scratched or worn CERTIFIED SHIMS and STANDARDS should be replaced. (see replace shims or replace standards)