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 [email protected] for more information regarding TAPPI Charts. 

Showing 1–20 of 32214 results

Filters

Collections

Content Type

Industry

Topics

Publications

Conferences

Committees

Event Type

Level of Knowledge

Featured Products Test Page 1 - Publications

Featured Products 42317 42318 42319 42320 2345 2059 2067 1902 1912 1918 1927 1940 1963 1982 2048 2049 2104 2072 2163 2119

Join or Renew

Links to login to TAPPI to join or renew membership

Overview

TAPPI is the #1 trusted source for new technical knowledge in the pulp, paper and converting industries.

Metering Size Press Drying and Web Handling Systems, 2000 Metered Size Press Forum

Metering Size Press Drying and Web Handling Systems, 2000 Metered Size Press Forum

benefits

Automatic Membership Renewal

Sign up for Automatic Membership Renewal to keep you TAPPI member benefits going. 

member benefit

Membership Overview

17099

Sustaining Corporate Membership Content

Put the power of TAPPI connections to work for your company. TAPPI Sustaining Corporate Membership is a catalyst for exceptional global opportunities. With it you will meet industry leaders, earn prestigious recognition, and discover new business possibilities worldwide.

Featured Products Test Page 2

Featured Products 42317 42318 42319 42320 2345 2059 2067 1902 1912 1918 1927 1940 1963 1982 2048 2049 2104 2072 2163 2119

membership types

Member benefits

Slider Images

Books
How to Write What People Like to Read

How to Write What People Like to Read

app