ASTM C949-80 Test for Porosity in Vitreous Whitewares by Dye Penetration

ASTM C949-80 Test for Porosity in Vitreous Whitewares by Dye Penetration

ASTM C949-80 is used for detecting pores, cracks, or other voids that may be present in otherwise impermeable whiteware ceramics.


    ASTM C949-80 is used for determining whether a ceramic has been properly fired (matured). Some degree of penetration is acceptable for the use or commercial quality of the item being tested. However, penetration of any extent may negate the usefulness of the ceramic. 

    Test Procedure:

    Unglazed fragments of vitreous whiteware products are randomly selected. They are immersed in a Fuchsine dye solution at one or more pressures for a specific time. They are dried, broken, and inspected for the extent of dye penetration in the fragments.

    Specimen size:

    Freshly broken fragments, approximately 1⁄4 inches, are the smallest dimension, up to 3⁄4 inches, and the largest dimension of the whiteware ceramic. At least 75 % of the surface should be free of glaze or other surface treatment.


    The penetration of the dye indicates the Porosity into the specimens.  


    Core Materials Testing Services


    A variety of microscopy and spectroscopy tools available for precise measurements from the nano to the meter scale.

    Metrology Testing Services POPULAR TESTS:

    TEM SIMS Profilometry

    Materials Testing

    ASTM and ISO standard and custom chemical, mechanical, thermal, corrosion tests, etc. for all materials metals, ceramic or polymers.

    Materials Testing Services POPULAR TESTS:

    Nondestructive Testing Electrical Testing Chemistry Analysis

    Product Testing

    Thousands of tests for product quality and reliability under heat, humidity, temperature shock, vibration, drop, electrostatic discharge.

    Product Testing Services POPULAR TESTS:

    Vibration Testing Humidity Testing Accelerated Aging

    Looking for Material Testing?

    We have already delivered 10000+ Material Test results to top companies

      Send us a request

        Process for testing

          STEP 01

          You share material and testing requirements with us


          STEP 02

          We ensure your sample pick-up in an ensured manner


          STEP 03

          We deliver test report to your inbox

          Let’s work together!

          Share your testing requirements with us and we will be happy to assist you.

          ddd Just share your testing requirements and leave the rest on us!
          • Free, no-obligation consultation
          • Guaranteed confidentiality
          • Quick turnaround time
          • Hassle-free process

            idea icon
            Want to connect with an expert before you leave?