Quality Testing

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The Top 5 Biodiesel Tests

The 5 Tests Every Home Brewer Should Know

While there are dozens of tests available to home brewers, there are only five that every biodiesel home brewer needs to know.

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The 3-27 Conversion Test

The 3-27 Conversion Test

One of the most important tests available to home brewers. Biodiesel completely dissolves in methanol, while vegetable oil (VO) does not. It is this difference the 3-27 test depends on to give us an indication of how successful we have been at converting VO into biodiesel.

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Testing oil and biodiesel for water

Testing for Water in WVO

Homebrewers have relied on a number of tests to determine water content. The most common are the hot pan test, and the weigh-heat-weigh test. The Sandy Brae Water Test Kit, and the Carbide Manometer are becoming more popular due to improved accuracy at lower concentrations..

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titrate

Titrating WVO

Titrating WVO is essential to understanding the quality of your oil. It is a simple test and is used to build a biodiesel recipe. This article contains instructions and videos on how to tirate.

 

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GO/NO GO Field Titration

Go/NO GO Field Titration

When you're out scouting for oil sources, it is best to test the oil before talking the source. That way you don't spend time acquiring a fantastic oil source that turns out to titrate to 20. This test lets you quickly determine if WVO meets your standard when looking for that perfect oil source.

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3M FFA Test Strips

FFA Test Strips

3M offers a test strip for measuring FFA% of oil. The strips cost about 50 cents a strip and will quickly tell us roughly how good or bad your oil is. It's a great idea for when your scouting for sources and want to test the oil on site.

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The Biodiesel pHLip Test

The Biodiesel pHLip Test

Cytoculture International manufactures the pHLip test for biodiesel. It costs about $5 per test and acts as a firewall against 'bad' fuel. It gives indications for low conversion, poorly washed fuel, and aging fuel

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Gel point and cloud point test for biodiesel

Cloud Point and Pour Point Tests

Your Biodiesel can Gel up and clog your filter when it gets cold out. But since the temperature that biodiesel starts to clog filters varies a great deal, we need to test the biodiesel we are using to make sure it will work with no problems.

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Cold Soak Filtration Test

Cold Soak Filtration Test

When biodiesel gets cold, sometimes stuff will fall out that doen't melt back in when it warms up. On the UK forum they call it HMPE for High Melting Point Esters. It is common with biodiesel made from WVO. This is the official ASTM test for it.

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Soap Titration for Unwashed Biodiesel

Soap Titration for Unwashed Biodiesel

This biodiesel titration test is used to determine the amount of soap in unwashed biodiesel. It is not part of ASTM D6751 biodiesel testing. It is a variation the one found in the Biodiesel Analytical Methods by the NREL pg 41, and has been tuned specifically for testing unwashed biodiesel.

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The Biodiesel Washwater Separation Test

The Separation Test

This test is used to determine when to stop washing your biodiesel. It works on the basic principle that we have removed enough impurities when the suspended water drops quickly to the bottom without forming an emulsion.

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methanoltest

Testing Methanol for Purity

This test will tell you how much water is in your methanol. Over time, water will get into your methanol from the air. The hydrometer is the best way for a home brewer to check it on the cheap.

 

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