pH and Alkaline Reserve Tests

The Tests

pH / Alkaline Reserve TestingIPI tests paper and paperboard photo-storage products for pH levels using a modification (described in ISO 18902) of the standardized test, TAPPI T 509 Hydrogen Ion Concentration (pH) of Paper Extracts (Cold Extraction Method). This determines if a material is acidic, basic, or neutral. The test involves soaking a sample of the material in distilled water for a certain length of time and then measuring the pH of the solution.

IPI tests for alkaline reserve of paper by soaking a sample in water, in the same manner as for the pH test, and then measuring the amount of acid necessary to neutralize the alkaline buffering. This test determines the percent alkaline reserve of the paper. Alkaline reserves are added to paper and paperboards to neutralize acids that are created or absorbed as the paper deteriorates over time.

All test results are confidential.

What We Need

For the pH test and/or alkaline reserve test, the customer shall provide IPI with 10 grams of each material submitted for testing.

Please name or code your samples so that we have a reference by which to communicate the test results. Our test reports will refer only to your specific label.

NOTE: The pH and alkaline reserve are destructive tests; sample materials cannot be returned.

Materials for testing should be shipped to:

RIT/IPI
Attn: Andrea Venosa (pH/Alkaline Reserve)
Gannett Building 7B, Room 2000
70 Lomb Memorial Dr.
Rochester, NY 14623
585-475-5199

Pricing

Cold Extraction pH Test per ISO 18902

  • First two samples inclusive (minimum charge): $600
  • Each additional samples (sent at same time): $300

Alkaline Reserve Test

  • First two samples inclusive (minimum charge): $600
  • Each additional samples (sent at same time): $300

Cold Extraction pH Test and Alkaline Reserve Package

  • First two samples inclusive (minimum charge): $900
  • Each additional samples (sent at same time): $450

For more information on pH or Alkaline Reserve testing, please contact Andrea Venosa at ajvpph@rit.edu.