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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Laminate Manufacturers Meet the Indoor Air Quality Challenge by Creating Low Emitting Products for High Performance Buildings, 2004 Decorative & Industrial Laminates Symposium

Laminate Manufacturers Meet the Indoor Air Quality Challenge by Creating Low Emitting Products for High Performance Buildings, 2004 Decorative & Industrial Laminates Symposium

Effects of Coating Structure and Optics on Inkjet Printability, 1999 Coating Conference Proceedings

Effects of Coating Structure and Optics on Inkjet Printability, 1999 Coating Conference Proceedings

Baggy Webs: Making, Measurement and Mitigation Thereof, 2001 Engineering / Finishing & Converting Conference Proceedings

Baggy Webs: Making, Measurement and Mitigation Thereof, 2001 Engineering / Finishing & Converting Conference Proceedings

Specifying Preimpregnated Papers for Colour and Covering Power, 2002 Decorative and Industrial Laminates Symposium

Specifying Preimpregnated Papers for Colour and Covering Power, 2002 Decorative and Industrial Laminates Symposium

Impulse Drying of a South African Furnish, 2000 Engineering Conference Proceedings

Impulse Drying of a South African Furnish, 2000 Engineering Conference Proceedings

From Wastepaper to Paper, 1993 Engineering Conference Proceedings

From Wastepaper to Paper, 1993 Engineering Conference Proceedings

Testing the Effects of Operating Conditions on Corrosion of Water Wall Materials in Kraft Recovery Boilers, 1996 Engineering Conference Proceedings

Testing the Effects of Operating Conditions on Corrosion of Water Wall Materials in Kraft Recovery Boilers, 1996 Engineering Conference Proceedings

Temperature Effects on Corrosion Rates, 1990 Engineering Conference Proceedings

Temperature Effects on Corrosion Rates, 1990 Engineering Conference Proceedings

Application of Dynamic Simulation in Stock Preparation and Paper Machines, 2000 Engineering Conference Proceedings

Application of Dynamic Simulation in Stock Preparation and Paper Machines, 2000 Engineering Conference Proceedings

Mixing Intensity Analysis of a 2-Layer Stratified Headbox Jet, 2000 Engineering Conference Proceedings

Mixing Intensity Analysis of a 2-Layer Stratified Headbox Jet, 2000 Engineering Conference Proceedings

Automatic Jet Speed Profiling System, 2000 Engineering Conference Proceedings

Automatic Jet Speed Profiling System, 2000 Engineering Conference Proceedings

Characterizing Fibre Suspensions, 1996 Engineering Conference Proceedings

Characterizing Fibre Suspensions, 1996 Engineering Conference Proceedings

Susceptibility of Composite Floor Tube Materials to Stress Corrosion Cracking During Recovery Boiler Operation, 2000 Engineering Conference Proceedings

Susceptibility of Composite Floor Tube Materials to Stress Corrosion Cracking During Recovery Boiler Operation, 2000 Engineering Conference Proceedings

Corrosion in Chlorine Dioxide Bleach Environments - Experiences with Stainless Steels and Nickel-Base Alloys, 1993 Engineering Conference Proceedings

Corrosion in Chlorine Dioxide Bleach Environments - Experiences with Stainless Steels and Nickel-Base Alloys, 1993 Engineering Conference Proceedings

Process Application in the Pulp Mill, 2000 Engineering Conference Proceedings

Process Application in the Pulp Mill, 2000 Engineering Conference Proceedings

Process Safety Management Process Boundary Determinations, 1995 Engineering Conference Proceedings

Process Safety Management Process Boundary Determinations, 1995 Engineering Conference Proceedings

Thermal Analysis of the Polymerization of Phenol Formaldehyde Resins, 2004 Decorative & Industrial Laminates Symposium

Thermal Analysis of the Polymerization of Phenol Formaldehyde Resins, 2004 Decorative & Industrial Laminates Symposium

Using Modified Continuous Cooking (MCC) to Reduce AOX and Dioxins in Pulp Mill Effluent, 1991 Engineering Conference Proceedings

Using Modified Continuous Cooking (MCC) to Reduce AOX and Dioxins in Pulp Mill Effluent, 1991 Engineering Conference Proceedings

Dryer Sleeve Bearing Lubrication System Reduces Failures, Improves Safety, 1996 Engineering Conference Proceedings

Dryer Sleeve Bearing Lubrication System Reduces Failures, Improves Safety, 1996 Engineering Conference Proceedings

Electrolysis of Weak Black Liquor and Bleach Effluent, 1996 Engineering Conference Proceedings

Electrolysis of Weak Black Liquor and Bleach Effluent, 1996 Engineering Conference Proceedings