PTP Program


2024 Annual Fee:

Schedule: April, August, November
Sample amount distributed each test cycle: 1 gallon

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: 2010 Conformity Assessment - General Requirements for Proficiency Testing, by the American Association for Laboratory Accreditation. Certificate Number: 4209.01

List of Programs and Scopes

About The Program

ASTM's Biodiesel Proficiency Testing in cooperation with AOCS (, provides laboratories who need a statistical quality assurance tool that will enable them to improve and maintain a high level of performance in conducting routine ASTM biodiesel analyses by comparing their results with those of other laboratories worldwide.

As a program participant, you will receive a sample of biodiesel and all the necessary instructions for the test cycle. Your laboratory will perform the tests that you normally conduct within your own facility using the specified ASTM methods cited in the program.

Upon completion of the tests, each laboratory will electronically submit data to ASTM via a secure website. The statistical summary report for each test cycle will be delivered electronically to each participant. Reports contain:

  • Coded laboratory test results
  • Statistical analyses of test data

Samples, 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 25 business days.

For more information, contact us.

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.

Should you have an issue with your published results, please write to with your lab number and account number.

Test Materials

Each participating lab will receive a one (1) gallon can containing biodiesel for each of the three test cycles conducted during the year.

Test Parameters


D664, D974, ABNT NBR 14448


D482, D874, ABNT NBR 9842, ABNT NBR 6294


D4530, D189

Carbon Residue

D2500, D5771, D5773, D7683

Cloud Point

D6371, ABNT NBR 14747 

Cold Filter Plugging Point

D130, ABNT NBR 14359 


D1298, D4052, ABNT NBR 7148, ABNT NBR 14065




EN 14538

Ca, Mg, Na, K by ICP

ABNT NBR 15553

Ca, Mg, Na, P, K by ICP

EN 14103, ABNT NBR 15764

Linolenic Methyl Ester

EN 14110, ABNT NBR 15343

Methanol Content

EN 14112, EN 15751

Oxidation Stability


Ca, Mg, Na, K by ICP


Filtration, Cold Soak (CSFT)

D93, D3828, ABNT NBR 14598

Flash Point

D6584, ABNT NBR 15908


D6079, D7688



Particulate Contamination



D5453, D7039, ABNT NBR 15867, ABNT NBR 16549-2



Thermal Stability

D445, D7042, ABNT NBR 10441 

Viscosity, Kinematic


Water and Sediment

D6304, E203, ABNT NBR 15531

Water by KF


Cloud point

ISO 2719

Flash Point

ISO 2160


ISO 3104

Viscosity, Kinematic

ISO 6245


ISO 3675, ISO 12185


ISO 3015, ISO 22995, EN23015

Cloud Point

ISO 3734

Water and Sediment

ISO 20846


ISO 12156-1


EN 116

Cold Filter Plugging Point

NOTE: List of tests subject to change.

Distribution Of Samples

Test samples are prepared and distributed for ASTM International by Clark Labs in Jefferson Hills, PA. Program registration fees include the cost of shipping the test samples to U.S. participants or, for international participants, to a third-party shipping agent located in the U.S.

IMPORTANT for International 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 U.S. who will be responsible for shipping samples from the U.S. to your facility. Participants are responsible for making financial and shipping arrangements directly with the 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.
  • Product Shipment Specs
    • Quantity: 1 GAL drum
    • Shipping Weight: 10lbs
    • Dimensions: 8x8x11"
    • ECCN: EAR99
    • Harm Code: 3824.90.4030
  • 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 tests to participate.

About Astm International Committee D02 On Petroleum Products, Liquid Fuels, And Lubricants

About ASTM International COMMITTEE D02 ON PETROLEUM PRODUCTS, LIQUID FUELS AND LUBRICANTS provides the technical direction for the program. Test information generated through the program is utilized by Committee D02 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.)