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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Level of Knowledge

Supplemental Recycled Fiber

Supplemental Recycled Fiber Module 1 Introduction and Course Overview Module 2 OCC Bale Handling Module 3 OCC Cleaning Module 4 OCC Coarse Screening Module


Recovery Module 1 Introduction and Course Overview Module 2 Baghouse Basics Module 3 Fluidized Bed Boilers Module 4 Kraft Recovery Boiler Fundamentals Module 5 Kraft Recovery Boilers

Pulp Manufacturing Technology

Pulp Manufacturing Technology Module   1 – Introduction & Overview of Course Module   2 Overview of U.S. and Global Pulp & Paper Industry

Kraft Pulping

Kraft Pulping Module 1 Introduction and Course Overview Module 2 Air Emissions Monitoring Basics Module 3 Batch Cooking Introduction Module 4 Blow Line Refining Operation Module 5 Brown Stock


Recaust Module 1 Introduction and Course Overview Module 2 Dregs Washing Module 3 Electrostatic Precipitators Module 4 Exhaust Gas Scrubbers Module 5 Green Liquor Clarifiers Module 6

Environmental Control

Environmental Control Module 1   Environmental Overview Module 2   US Laws & Regulations Module 3   Pulp and Paper Process Review I

Chemical Recovery

Chemical Recovery Module   1   Introduction and Course Overview Module   2   Evaporation I Module   3   Evaporation II


Environmental Module 1 Introduction and Course Overview Module 2 CNCG Systems Module 3 Contaminated Condensate Systems Module 4 HVLC Systems Module 5 Process Sewers and Effluent Collection Module

Fiber Supply

Fiber Supply Module 1 Introduction and Course Overview Module 2 Chip Screening Module 3 Log Handling and Chip Storage Module 4 Paper Fiber Sources Module 5 Wood Properties and

Corrugated Packaging - Box Plant Basics

Corrugated Packaging Box Plant Basics Module 1  Corrugated Box Basics Module 2  Other Box Plant Equipment Module 3  Safety Module 4  Raw Materials  Module 5  Corrugators


Evaporators Module 1 Introduction and Course Overview Module 2 Black Liquor Evaporators Equipment Module 3 Black Liquor Evaporators Introduction Module 4 Black Liquor Evaporators Operations


Bleaching Module 1 Introduction and Course Overview Module 2 Alkaline Extraction Module 3 Bleaching Basics Module 4 Bleaching Equipment Module 5 Bleaching Sequences and Filtrate Recycling Module 6


Finishing Module 1 Introduction and Course Overview Module 2 Paper Machine Winder Slitting Module 3 Paper Machine Winding Basics Module 4 Pulp Drying and Baling Module 5 Roll Handling

Paper Machine Optimization

PAPER MACHINE OPTIMIZATION WET END OPERATIONS Module   1 Course Overview                                                                   Module   2 Evolution of Paper


Converting Module 1 Introduction and Course Overview Module 2 Sheeting of Paper Module 3 Palletizing Module 4 Paper Ream Packing

TAPPI Tissue 201: Operations & Runnability

STOCK PREPARATION AND WET END OPERATIONS Module 1 Wet End Chemistry Impacts and Optimization Module 2 Forming Fabric Options and Benefits  Module 3 Tissue Former Headbox Operations and Optimization  PRESSING AND DOCTORING OPERATION Module 4

Tissue Manufacturing Technology

Tissue Manufacturing Technology Module  1 Introduction & Overview Module  2 Tissue Structure Module  3 Tissue Properties – Softness

Stock Approach

Stock Approach Module 1 Introduction & Course Overview Module 2 Centrifugal Cleaners Module 3 Stock Approach Deaeration Module 4 Thin Stock Screening Module 5 Thin Stock System

Paper Properties and Testing

Paper Properties and Testing Module 1 Introduction & Course Overview Module 2 Common Physical Tests for Paper and Board Module 3 Paper and Board Optical Tests Module 4 Paper and Board


Forming Module 1 Introduction and Course Overview Module 2 Forming Fabric Design Module 3 Forming Fabric Tensioning and Guiding Module 4 Fourdrinier Design and Operation Module 5 Multi ply