Charts & Datasets

TAPPI has a solution for dirt -- the kind that gets into your products during the manufacturing or shipping process.  

TAPPI’s Dirt Chart cards estimate the equivalent black area (EBA) of dirt or other colored specks. The equivalent black area of a dirt speck is defined as the area of a round black spot on the white background of the TAPPI Dirt Estimation Chart that makes the same visual impression as the dirt speck on the material in which it is embedded. Dirt Estimation Charts are manufactured from an original negative on Kodak photographic paper. The paper positive is produced in a NuArc contacting frame with an Olite light source and Olix light integrator. The light integrator precisely controls the exposure. Each piece of photographic paper that is produced during the manufacturing process is evaluated with an X-Rite densitometer for correct exposure.

To ensure the accuracy of the charts, each piece is measured by examining the .20 dot with a 100 x magnifier that has a reticle (scale) incremented in 5/10,000 mm on the lens. This opaque chart can be used with TAPPI Test Methods  T 213T 437, and  T 537.  

You want to hear more? Check out TAPPI’s size estimation chart (for use with Test Method  T 564). Developed from the TAPPI Dirt Estimation Chart, this transparency is used to measure the size of spots, defects, or inclusions over the range of 0.02 to 5.00 square millimeters in paper and other industrial materials such as textiles or plastics.  

The TAPPI Calibrated Size Estimation Chart is a great solution for quality control applications where exact dimension specifications are required. Each Calibrated SEC comes with its own data sheet that provides an actual dot measurement area (expressed in squared mm) to correspond with the increments (dots) on the chart.

Dirt Estimation Chart  (Opaque) 
Product Code: 0109DIRT 
Member Price: $41               
Non-Member Price: $58 

Size Estimation Chart  (Transparency) 
Product Code: 0109DIRTT 
Member Price: $57               
Non-Member Price: $82

Calibrated Size Estimation Chart  (Transparency)

Product Code: 0109DIRTCAL 
Member Price: $300 
Non-Member Price: $350

 

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Terry S. Paulson Memorial Scholarship Form

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Measured Macro and Microstickies at an OCC Mill, 2005 Engineering, Pulping & Environmental Conference

Measured Macro and Microstickies at an OCC Mill, 2005 Engineering, Pulping & Environmental Conference

Laminating Adhesives State-of-the-Art and Future Technologies, 2005 European PLACE Conference

Laminating Adhesives State-of-the-Art and Future Technologies, 2005 European PLACE Conference

The Impact of Changing ONP Quality on a Newsprint Mill, 2005 Engineering, Pulping & Environmental Conference

The Impact of Changing ONP Quality on a Newsprint Mill, 2005 Engineering, Pulping & Environmental Conference

Novel High Performance Collation Shrink Films for Bundling and Multipacks, 2005 European PLACE Conference

Novel High Performance Collation Shrink Films for Bundling and Multipacks, 2005 European PLACE Conference

Determining the Heat of Reaction of Kraft Pulping, 2005 Engineering, Pulping & Environmental Conference

Determining the Heat of Reaction of Kraft Pulping, 2005 Engineering, Pulping & Environmental Conference

Use of Borate in Semi-Chemical Pulping, 2005 Engineering, Pulping & Environmental Conference

Use of Borate in Semi-Chemical Pulping, 2005 Engineering, Pulping & Environmental Conference

European Regulations For Multilayer Food Contact Materials, 2005 European PLACE Conference

European Regulations For Multilayer Food Contact Materials, 2005 European PLACE Conference

Drying Section Deposits: Origin Identification and Influence of the Recycling Processess: Deinking and Packaging Line Comparison, 2005 Engineering, Pulping, & Environmental Conference

Drying Section Deposits: Origin Identification and Influence of the Recycling Processess: Deinking and Packaging Line Comparison, 2005 Engineering, Pulping, & Environmental Conference

OCC Pulp Quality Improvement at Simpson-Tacoma Kraft Company, 2005 Engineering, Pulping & Environmental Conference

OCC Pulp Quality Improvement at Simpson-Tacoma Kraft Company, 2005 Engineering, Pulping & Environmental Conference

Update of the American Forest and Paper Association Recovery Boiler Program, 2005 Engineering, Pulping & Environmental Conference

Update of the American Forest and Paper Association Recovery Boiler Program, 2005 Engineering, Pulping & Environmental Conference

Innovative Primary Solids Treatment With Dissolved Air Flotation, 2005 Engineering, Pulping & Environmental Conference

Innovative Primary Solids Treatment With Dissolved Air Flotation, 2005 Engineering, Pulping & Environmental Conference

Upgrading OCC and Recycled Liner Pulps by Medium-consistency Ozone Treatment, 2005 Engineering, Pulping & Environmental Conference

Upgrading OCC and Recycled Liner Pulps by Medium-consistency Ozone Treatment, 2005 Engineering, Pulping & Environmental Conference

Diagnosis of Hight Temperature Cycling Associated With Primary Air Port Cracking in Kraft Recovery Boilers, 2005 Engineering, Pulping & Environmental Conference

Diagnosis of Hight Temperature Cycling Associated With Primary Air Port Cracking in Kraft Recovery Boilers, 2005 Engineering, Pulping & Environmental Conference