Tappi Size Estimation Chart (Opaque) 0109DIRT 0.02 to 5.00 mm2

TAPPI charts are popular and reliable tools for quality control through visual inspection.

A must for Quality Inspection Professionals in paper, packaging, medical, plastics, and other industries, these flat, flexible inspection gauges are used to measure the size of imperfections over the range of 0.02 to 5.00 square millimeters in industrial materials.

The TAPPI Dirt Estimation Chart is an opaque chart used to estimate the equivalent black area (EBA) of dirt or other colored specks over the range of 0.02 to 5.00 square millimeters.

The chart can be used in a large number of applications where there is a need to estimate a size (area) by way of a direct comparison to a known circular area. A must for quality inspection professionals, these charts serve as quality assurance resources to determine the size of imperfections in the following applications.

• Measure the size of defects in products
  
• Inspect third-party packaging
  
• Determine the size of imperfections in molded plastic products and medical tubing
  
• Detect embedded specs     
  
• Measurement of visible ink spatter on printed surfaces
  
• Estimation of the growth rate of bio-colonies
  
• Detect air inclusions in transparent plastic castings and films.