Why Test Here?
There are several labs out there that can test your biodiesel.
Here's why we believe you should test your fuel with us.

Affordable Pricing
We know that most people are trying to save money by making Biodiesel so we pulled out all the stops in negotiating for the absolute best pricing for high quality ASTM Biodiesel Testing with FuelOnly. We spent several days with FuelOnly negotiating for what we believe are some of the best prices you'll find in the market. Because they have an interest in home-brewers, we were able to negotiate for their absolute lowest volume discount pricing for our customers. We're sure you'll notice the difference too!

ASTM Testing Methods
You can rest assured that FuelOnly will test your fuel the right way! FuelOnly participates in the acclaimed ASTM interlaboratory cross check program and only tests fuel following the correct biodiesel testing methods as defined in the Biodiesel ASTM standard. You'll also get easy-to-read results with each ASTM test method clearly displayed.

Fuel Testing Is All FuelOnly Does
FuelOnly was built from the ground up with one thing in mind; FUEL TESTING! By focusing only on fuel testing and analysis they're able to provide superior analysis and results and dynamite customer service.

How It Works
Once you purchase a test package below, FuelOnly will ship you a testing kit. You'll then put your fuel to be tested in the supplied kit and repackage it up with the included packing material. Then attach the supplied prepaid shipping label to the box and drop it off at any UPS facility. When your package arrives at FuelOnly, they'll open it up and start the testing process. Afer the testing is complete you'll receive your test results via email.

Easy To Use Kits
Unlike other labs that make you send your fuel in using your own containers, FuelOnly will actually send you the kit to use. You'll not only receive a kit but a pre-paid label to send it back with. The kit is completely standardized and includes easy to follow directions. You simply sample your fuel, box it up and ship it back to FuelOnly for analysis. Once it gets to the lab it's tracked electronically and tested automatically to ensure the highest level of testing.

State Of The Art Equipment
FuelOnly started out with the belief that the test results are only as good as the equipment it's tested on. With this in mind, they set up one of the most top-notch, state-of-the-art Biodiesel testing labs in the United States. All of their equipment is brand new, completely automated and extremely accurate.

Turn Around Time
Once samples reach Fuel Only's facility, typical turn around time is roughtly 4 business days for most tests. The modified and full ASTM tests take a full 7 business days to report. Once results are ready, they are emailed directly to you in PDF format. Click here to see an example result

Pricing & shipping charges below are for the lower 48 states.
Shipping to & from additional destinations is extra. Email us for a quote.

Free & Total Glycerin | Back To Testing Packages
This is by far the most common test Biodiesel users and producers use. This test checks the biodiesel to identify how much glycerin is still left over in your biodiesel sample. Free glycerin is an indication of how well you're biodiesel is being washed. Bound glycerin allows you to see how well the reaction occured when the biodiesel was produced. The test reports not only total glycerin amounts but will break out your results into triglycerides, diglycerides, monoglycerides, and free glycerin along with how it compares to the ASTM standard. See a sample test result here
ASTM D6584 - Free & Total Glycerin

PRICE: $79.99 SHIPPING: $10.00

The Basic Test Package | Back To Testing Packages
This package tests for common quality indicators in Biodiesel. It will test for Free & Total Glycerin, Flashpoint, and Acid Number. The Free & Total Glycerin test will indicate how well the conversion went. The Flashpoint test will give you an idea of how much methanol is left in the oil, which helps to indicate how well you're washing is working. The Acid Number also helps to identify how well the fuel is being reacted. It can also indicate if fuel is oxidizing and breaking down in storage. High acid numbers can have a solvency effect on rubber seals and hoses in the fuel system.
ASTM Test Methods
ASTM D6584 - Total & Free Glycerin Test
ASTM D93 - Flashpoint Test
ASTM D664 - Acid Number

PRICE: $199.99 SHIPPING: $10.00

The Deluxe Testing Package | Back To Testing Packages
This package is the same as above except we add the Sulfated Ash Test and the Karl Fisher Water Content Test. Sulfated Ash is an indicator of how much soap or other residuals are left. High Sulfated Ash levels can clog new Catalytic Converts on diesels designed for ULSD (Ultra Low Sulfur Diesel). The Water Content test indicates how dry the biodiesel is. Water and diesel fuel injection systems don't do too well together so having dry fuel is of utmost importance. NOTE: This test packages uses a different method to find water content (D 6304). The Karl Fisher test will find TOTAL water content & not just FREE water. The ASTM only requires FREE water (D 2709), however knowing total water content is of great benefit.
ASTM Test Methods
ASTM D6584 - Total & Free Glycerin
ASTM D93 - Flashpoint
ASTM D674 - Sulfated Ash
ASTM D664 - Acid Number
ASTM D6304 - Water By Karl Fisher

PRICE: $229.99 SHIPPING: $10.00

The "Big 5" Test Package | Back To Testing Packages
This test package has the 5 most commonly failed tests by Biodiesel producers. It's a common test run by commercial biodiesel producers, biodiesel distributors, and biodiesel retailers. If Biodiesel is going to fail ASTM, these tests typically are where it will fail. This is a great test to run if you're getting ready to do the full ASTM tests and think you're "almost there". We highly recommend it!
ASTM Test Methods
ASTM D6584 - Total & Free Glycerin
ASTM D93 - Flashpoint
ASTM D2709 - Sediment & Water
ASTM D664 - Acid Number
ASTM D2500 - Cloud Point

PRICE: $299.99 SHIPPING: $10.00

The Modified ASTM D 6751 Test Package | Back To Testing Packages
If you think you've got what it takes to pass the ASTM D6751 test, but aren't quite ready to spring for the whole thing, then this is the test for you. It tests for everything the full Biodiesel ASTM D6751 Test calls for but not in exactly the same way so it's not "certifiable" for your ASTM accredidation for selling the fuel. For example, the Cetane is reported as an index not as the actual number and Distillation is simulated. However, this is an excellent test to check your fuel against and comes highly recommended as a cost effective way to see if you're ready for the full bona-fide ASTM D6751 Test Package.
ASTM Test Methods For Modified ASTM D6751-09
ASTM D445 - Viscosity @ 40° C
ASTM D664 - Acid Number
ASTM D6584 - Free & Total Glycerin
ASTM D1160 - Distillation Temperature
ASTM D976 - Cetane Index
ASTM D2500 - Cloud Point
ASTM D93 - Flash Point, Pensky Martens
ASTM D5453 - Sulfur
ASTM D4951 - Phosphorus, Sodium, Potassium, Calcium, & Magnesium
ASTM D2709 - Sediment & Water
ASTM D874 - Sulfated Ash
ASTM D4530 - Carbon Residue
ASTM D130 - Copper Strip Corrosion Rating
EN 14112 - Oxidative Stability
ASTM D6217-Annex A1 Cold Soak Filter Ability

PRICE: $741.99 SHIPPING: $10.00