ASTM D7558-09 Colorimetric / Spectrophotometric Procedure

ASTM D7558-09 Colorimetric / Spectrophotometric Procedure

ASTM D7558-09 is intended to evaluate how much absolute extractable gas pedals are in regular elastic-plastic (NRL) and nitrile gloves. The qualities expressed in SI units are to be viewed as standard.


    Dialkyldithiocarbamates (DTCs), benzothiazoles, and thiurams are regularly utilized as vulcanization gas pedals in NRL items. A UV spectrophotometer with recognition at 320 nm is used to gauge the ZDTC, mercaptobenzothiazole, and thiurams. 


    In ASTM D7558-09, the elastic material is cut into tiny pieces, and around 1 g is set into the extraction vessel. Acetonitrile is added to give a last volume/weight of 10 mL acetonitrile per gram of elastic. The acetonitrile extricate is recuperated and centrifuged. Zinc dibutyl dithiocarbamate (ZDBC) is added as per guidelines at 500 to 31.25 μg/mL in acetonitrile. Every individual arrangement is blended and afterward hatched for 120 min at 50 6 5°C. All samples are blended thoroughly, and the standard is estimated at 320 nm on a UV spectrophotometer. Contingent on the number of tests tried, this test strategy takes around five h to finish.

    Specimen size:

    Polypropylene or Glass Extraction Tubes, with screw top lids (50 mL, conical bottom) and Polypropylene Cryotubes are required.


    The report will incorporate a portrayal of the elastic gadget, including item and parcel number, when accessible. The gas pedal should be communicated in μg/g and μg/dm2


    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?