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ARCHIVED - Questions and Answers on the Federal Questions and Answers on the Federal Sulphur in Diesel Fuel Regulations

4. Analysis

  1. Why are specific test methods stipulated in the Sulphur in Diesel Fuel Regulations?

    Test methods are specified in order to provide certainty and consistency in the enforcement of the regulations.

  2. What happens if a test method is amended?

    Any amendment to a test method is automatically incorporated into the regulations (refer to subsection 1(2)).

  3. Why is the test method changed from CAN/CGSB-3.0 No. 16.0-95 to ASTM D 5453-00 after December 31, 2003?

    ASTM D 5453-00 has increased accuracy for lower sulphur levels. This was recommended to Environment Canada by the CGSB.

  4. In 2003, CAN/CGSB 3.0 No. 16.0-95 is the test method identified for compliance purposes. CAN/CGSB 3.0 No. 16.0-95 yields results in percent by weight. The limits in Section 3 of the regulations are specified in mg/kg. How does one convert from percent by weight from CAN/CGSB 3.0 No. 16.0-95 to mg/kg?

    Results obtained from CAN/CGSB - 3.0number 16.0 - 95 method can be converted arithmetically by multiplying them by 10,000 and reporting the result in mg/kg, with 2 significant digits.

  5. How do I get copies of the test methods?

    The methods can be purchased from the Canadian General Standards Board (CGSB):

    CGSB Sales Centre
    Ottawa, Canada
    K1A 1G6

    or from the American Society for Testing and Materials (ASTM):

    100 Barr Harbor Drive
    PO Box C700
    West Conshohocken, Pennsylvania

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