40 CFR Part 63, Subpart HHHH, Appendix B to Subpart HHHH of Part 63 - Method for the Determination of Loss-on-Ignition

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View PDF at GPO Pt. 63, Subpt. HHHH, App. B
Appendix B to Subpart HHHH of Part 63—Method for the Determination of Loss-on-Ignition
1.0Purpose
The purpose of this test is to determine the loss-on-ignition (LOI) of wet-formed fiberglass mat.
2.0Equipment
2.1 Scale sensitive to 0.001 gram (g).
2.2Drying oven equipped with a means of constant temperature regulation and mechanical air convection.
2.3Furnace designed to heat to at least 625 °C (1,157 °F) and controllable to ±25 °C (±45 °F).
2.4Crucible, high form, 250 milliliter (mL).
2.5Desiccator.
2.6Pan balance (see Note 2 in 4.9)
3.0Sample Collection Procedure
3.1Obtain a sample of mat in accordance with Technical Association of the Pulp and Paper Industry (TAPPI) method 1007 “Sample Location.”
3.2Use a 5- to 10-g sample cut into pieces small enough to fit into the crucible.
3.3Place the sample in the crucible. (Note 1: To test without the use of a crucible, see Note 2 after Section 4.8.)
3.4Condition the sample in the furnace set at 105 ±3 °C (221 ±9 °F) for 5 minutes ±30 seconds.
4.0Procedure
4.1Condition each sample by drying for 5 minutes ±30 seconds at 105 ±3 °C (22 ±5 °F).
4.2Remove the test sample from the furnace and cool in the desiccator for 30 minutes in the standard atmosphere for testing glass textiles.
4.3Place the empty crucible in the furnace at 625 ±25 °C (1,157 ±45 °F). After 30 minutes, remove and cool the crucible in the standard atmosphere (TAPPI method 1008) for 30 minutes.
4.4Identify each crucible with respect to each test sample of mat.
4.5Weigh the empty crucible to the nearest 0.001 g. Record this weight as the tare mass, T.
4.6Place the test sample in the crucible and weigh to the nearest 0.001 g. Record this weight as the initial mass, A.
4.7Place the test sample and crucible in the furnace and ignite at 625 ±25 °C (1,157 ±45 °F).
4.8After ignition for at least 30 minutes, remove the test sample and crucible from the furnace and cool in the desiccator for 30 minutes in the standard atmosphere (TAPPI method 1008).
4.9Remove each crucible, and test each sample separately from the desiccator, and immediately weigh each sample to the nearest 0.001 g. Record this weight as the ignited mass, B. (Note 2: When it is known that no ash residue separates from the test sample during the weighing and igniting processes, you may weigh the sample separately without the crucible. When this occurs, the tare mass (T) equals zero. With appropriate care, you can dry and weigh a single piece of mat and place with tongs into the ignition oven on appropriate refractory supports. When the ignition time is over, remove the sample as an intact fragile web and weigh it directly on a pan balance.)
5.0Calculation
5.1Calculate the LOI for each sample as follows:
Where:
A = initial mass of crucible and sample before ignition (g);
B = mass of crucible and glass residue after ignition (g); and
T = tare mass of crucible, (g) (see Note 2).
5.2Report the percent LOI of the glass mat to the nearest 0.1 percent.
6.0Precision
The repeatability of this test method for measurements on adjacent specimens from the same sample of mat is better than 1 percent.

Title 40 published on 2013-07-01

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  • 2014-03-27; vol. 79 # 59 - Thursday, March 27, 2014
    1. 79 FR 17340 - National Emission Standards for Hazardous Air Pollutant Emissions: Group IV Polymers and Resins; Pesticide Active Ingredient Production; and Polyether Polyols Production
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      ENVIRONMENTAL PROTECTION AGENCY
      Final rule.
      This final action is effective on March 27, 2014. The incorporation by reference of certain publications listed in this final rule was approved by the Director of the Federal Register as of March 27, 2014.
      40 CFR Part 63

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Title 40 published on 2013-07-01

The following are ALL rules, proposed rules, and notices (chronologically) published in the Federal Register relating to 40 CFR 63 after this date.

  • 2014-07-02; vol. 79 # 127 - Wednesday, July 2, 2014
    1. 79 FR 37850 - National Emission Standards for Hazardous Air Pollutants: Off-Site Waste and Recovery Operations
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      ENVIRONMENTAL PROTECTION AGENCY
      Proposed rule.
      Comments. Comments must be received on or before August 18, 2014. A copy of comments on the information collection provisions should be submitted to the Office of Management and Budget (OMB) on or before August 1, 2014. Public Hearing. We do not plan to conduct a public hearing unless requested. If requested, we will hold a public hearing on July 17, 2014. To request a hearing, please contact the person listed in the following FOR FURTHER INFORMATION CONTACT section by July 14, 2014.
      40 CFR Part 63