With the help of this tool you can calculate the amount of catalyst and methanol you need to convert a given amount of oil into biodiesel.

First you have to do a titration on a small sample of the oil you want to use. The titration result in milliliter you can fill in the field "Titration in ML". If the concentration of your reagent is different than the standard value you can change it in the field "Normality reagent". Homemade reagents have a normality of 0,018 while laboratory reagents mostly have 0,05 or 0,1 N.

In "Oil sample gram" you fill in the weight of your oil sample. It does not need to be exactly 1 gram. After you fill in these data the program will calculate the %FFA for you. If the FFA is too high the program will give you a warning. In that case you will need to pre-treat your oil with, for example, sulfuric acid or use the experimental sugar based catalyst.

The field "Acid Value" gives the AV of the oil. It is always double the amount of the FFA.

After you fill in the size of your batch in “Batch size in KG”, you can select the catalyst of your choice. This program only has NaOH (Caustic Soda) and KOH (Caustic Potash), but we can provide Sodium Methoxide and Potassium Methoxide as well.

Now you can read out how much catalyst you have to use in "Catalyst KG". The amount of Methanol you can read out in "Methanol KG". If you want to make a 1 liter test batch you can read out the amount of catalyst you need for this in "Gram/Liter".

The field "Glycerol KG" gives you an estimated amount of the generated glycerol. It does this on the base of the amount of FFA "FFAs in KG" and the base glycerol level. The reason for this is that all the FFAs in a base-base process will be converted to soaps and normally ends up in the glycerol, giving it the dark color.