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

Contact webmaster@tappi.org for more information regarding TAPPI Charts. 

Showing 1–20 of 32167 results

Filters

Collections

Content Type

Industry

Topics

Publications

Conferences

Committees

Event Type

Level of Knowledge

Development of Metered Size Press Coating for High-Speed Operations, 2000 Metered Size Press Forum

Development of Metered Size Press Coating for High-Speed Operations, 2000 Metered Size Press Forum

Premetered Roll Coating System in Gorge De Domene, 2000 Metered Size Press Forum

Premetered Roll Coating System in Gorge De Domene, 2000 Metered Size Press Forum

Books
Corrugating Defect/Remedy Manual, Sixth Edition (Book and CD-ROM)

Corrugating Defect/Remedy Manual, Sixth Edition (Book and CD-ROM)

Substitution of the Metered Size Press for the Flooded Nip Size Press Viewed Under Economic and Quality Aspects, 2000 Metered Size Press Forum

Substitution of the Metered Size Press for the Flooded Nip Size Press Viewed Under Economic and Quality Aspects, 2000 Metered Size Press Forum

Books
Paper Machine Steam and Condensate Systems, Fifth Edition

Paper Machine Steam and Condensate Systems, Fifth Edition

Books
Story of Paper, The

Story of Paper, The

Books
How to Write What People Like to Read

How to Write What People Like to Read

Operating Experiences at Goricane Paper Mill, Medvode, Slovenia, 2000 Metered Size Press Forum

Operating Experiences at Goricane Paper Mill, Medvode, Slovenia, 2000 Metered Size Press Forum

World Market Trends, 2000 Metered Size Press Forum

World Market Trends, 2000 Metered Size Press Forum

Books
Secondary Fiber Recycling

Secondary Fiber Recycling

Books
Guidelines for the Buying and Selling of Used Corrugated Machinery

Guidelines for the Buying and Selling of Used Corrugated Machinery

Troubleshooting Rheology Problems in Metered Size Press, 2000 Metered Size Press Forum

Troubleshooting Rheology Problems in Metered Size 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

Books
Nonwovens: Theory, Process, Performance, and Testing

Nonwovens: Theory, Process, Performance, and Testing

Producing LWC Rotogravure Paper on a Metered Size Press, 2000 Metered Size Press Forum

Producing LWC Rotogravure Paper on a Metered Size Press, 2000 Metered Size Press Forum

Books
Testing Guidebook Electronic Document

Testing Guidebook Electronic Document

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

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