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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Books
Abecedario de Pulpa y Papel (Pulp and Paper Primer), Spanish Translation

Abecedario de Pulpa y Papel (Pulp and Paper Primer), Spanish Translation

Books
Corrugating Defect / Remedy Manual, Sixth Edition

Corrugating Defect / Remedy Manual, Sixth Edition

Role of the Roll Cover in the Film Transfer Press, 2000 Metered Size Press Forum

Role of the Roll Cover in the Film Transfer Press, 2000 Metered Size Press Forum

Making Coated Ink Jet Paper on Metering Size Presses, 2000 Metered Size Press Forum

Making Coated Ink Jet Paper on Metering Size Presses, 2000 Metered Size Press Forum

Books
Pulp and Paper Primer, Second Edition

Pulp and Paper Primer, Second Edition

Metered Size Press Installations-Handling, Circulation, and Filtering, 2000 Metered Size Press Forum

Metered Size Press Installations-Handling, Circulation, and Filtering, 2000 Metered Size Press Forum

Books
Functional Analysis of Lignins and Their Derivatives, The

Functional Analysis of Lignins and Their Derivatives, The

Manufacture of One-Sided Coated Speciality Papers on the Metered Size Press, 2000 Metered Size Press Forum

Manufacture of One-Sided Coated Speciality Papers on the Metered Size Press, 2000 Metered Size Press Forum

Books
Maintenance Painting of Steel Structures in Pulp and Paper Mills eBook

Maintenance Painting of Steel Structures in Pulp and Paper Mills eBook

Books
Testing Guidebook Electronic Document

Testing Guidebook Electronic Document

World Market Trends, 2000 Metered Size Press Forum

World Market Trends, 2000 Metered Size Press Forum

Development of the Metering Size Press: A Historical Perspective, 2000 Metered Size Press Forum

Development of the Metering Size Press: A Historical Perspective, 2000 Metered Size Press Forum

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Manual de Defectos/Remedios en la Corrugacion, Sexta Edicion

Manual de Defectos/Remedios en la Corrugacion, Sexta Edicion

Pilot-Scale Wet Web Surface Treatment of Newsprint, 2000 Metered Size Press Forum

Pilot-Scale Wet Web Surface Treatment of Newsprint, 2000 Metered Size Press Forum

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Guidelines for the Buying and Selling of Used Corrugated Machinery

Guidelines for the Buying and Selling of Used Corrugated Machinery

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Nonwovens: Theory, Process, Performance, and Testing

Nonwovens: Theory, Process, Performance, and Testing

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Guidelines for the Safe Operation of Yankee Dryers, Second Edition, revised and updated

Guidelines for the Safe Operation of Yankee Dryers, Second Edition, revised and updated