PTP Program

Natural Gas

2026 Annual Fee:
$1,000.00

Schedule: February, August
Sample amount distributed each test cycle: 1000 cc cylinder

Reduced Price

Register for Multiple Programs
A2LA Accredited Symbol

Accredited Proficiency Testing Provider*

This program is accredited in accordance with the recognized International Standard ISO/IEC 17043: 2023 Conformity Assessment - General Requirements for Proficiency Testing, by the American Association for Laboratory Accreditation. Certificate Number: 4209.01

List of Programs and Scopes

Registration Instructions

Program $1,000.00; Cylinder $4500.00

Please download the registration form and return to afontenot@astm.org; cylinder purchase is required as indicated on registration form.

About The Program

ASTM’s Compressed Natural Gas (NATG) Proficiency Testing Program provides laboratories with a statistical quality assurance (SQA) tool, enabling them to compare, improve, and maintain, a high level of performance in the use of ASTM methods with other laboratories worldwide. The NATG program will provide a typical mixture of hydrocarbons, principally methane, ethane or a mixture of these materials. The product will be a commercially available Natural Gas that is used as a domestic, commercial or industrial fuel.

Conducted two times annually, this program provides a different commercial sample, electronic report forms, and test instructions for each test cycle. Your laboratory performs the tests that you normally conduct within your own facility using the specified ASTM methods cited in the program. All data and related information generated from the program is coded to maintain lab confidentiality.

Test instructions and data report forms are distributed electronically to each participant on the date samples are distributed. Labs have approximately 8 weeks to submit test data with the final statistical summary reports being electronically distributed in approximately 20 business days.

Why Should Your Laboratory Participate?

ASTM's Proficiency Test Program provides you with:

  • A useful and meaningful statistical quality assurance tool to monitor the strengths and weaknesses of your laboratory's performance in conducting testing.
  • The resource you need to satisfy proficiency testing elements of laboratory accreditation.
  • A periodic comparison of test results with other participating laboratories.

Test Materials

Each participating lab will receive a one (1) cylinder of NATG for each of the two test cycles conducted during the year.

Test Parameters

D1945, D7607, D7833

Hydrogen and Oxygen

D3588

Lower Heating Value

D4468, D5504, D6228, D6968, D7165, D7493, D7551

Total Sulfur

D8221

Calculated Methane Number

NOTE: List of tests subject to change.

Distribution Of Samples

Test samples are prepared and distributed for ASTM International by SGS North America. in Deer Park, TX. Program registration fees do not include the cost of shipping the test samples to US participants or, for international participants, to a third-party shipping agent located in Canada.

IMPORTANT for ALL participants: You have the following options for receipt of samples:

  • Ship through a third party shipping agent - Provide ASTM International with the complete contact information of a designated Shipping Agent located in the US who will be responsible for shipping samples to your facility. Participants are responsible for making financial and shipping arrangements directly with the shipping agent.
    • You will still need to provide a shipping courier and account number to have the samples shipped from the Subcontractor to your third party shipping agent.
    • Please be advised that when samples are shipped, an e-mail is sent only to the contact of record on your ASTM PTP account. It is the customer’s responsibility to advise their designated shipper that the sample has been shipped.
    • We cannot permit shipping agents to pick up samples at our distributors’ warehouses.
  • Ship directly from the sample distributor via UPS, DHL, or FEDEX - Provide ASTM International with your shipping account number to cover shipping charges. Check that your carrier will deliver the test materials to your location. Materials classified as Hazardous may have restrictions.
    • You are responsible for additional fees charged-back to our distributor for any reason relative to your sample shipment including, but not limited to, fees for fuel surcharges, missing/invalid account numbers, dangerous goods, remote area delivery, and multiple delivery attempts.
    • DHL will only ship to international locations.
  • Product Shipment Specs
    • Quantity: 1000 cc
    • Shipping Weight: 10lbs
    • Dimensions: 8x8x11"
    • ECCN: EAR99
    • Harm Code: 2711.11.00
  • Generic SDS

Program Requirements

Participation is on an annual fee basis and open to all laboratories. Registration fees must be paid in advance to participate. Testing must be performed within the participant's laboratory facilities. A laboratory does not need to perform all the program test parameters to participate. (All data and related information generated from the program is coded to maintain lab confidentiality.)

About Astm International Committee D03 On Gaseous Fuels

ASTM Committee D03 on Gaseous Fuels was formed in 1935. D03 meets twice a year, in June and December, with about 50 members attending two days of technical meetings. The Committee, with a current membership of approximately 208, has jurisdiction over 55 standards, published in the Annual Book of ASTM Standards, Volume 05.06. D03 has 7 technical subcommittees that maintain jurisdiction over these standards. Test information generated through the program is utilized by Committee D03 to determine if modifications to ASTM International methods or new methods are warranted and to analytically review program test results. (All data and related information generated from the program is coded to maintain lab confidentiality.).

For Additional Information Please Contact:

Angelique Fontenot afontenot@astm.org - +1-610-832-9748