Change Your Titration Solution Every 90 Days
Titration solution used for titrating waste vegetable oil for Biodiesel production should be changed every 90 days to ensure it’s still potent.

Potassium Hydroxide and Sodium Hydroxide titration based solutions have been shown to deteriorate and lose potency with age. If not freshened, your titrations can slowly start increasing and can lead to using too much catalyst which can cause problems down the road.

To make Titration Solution, simply mix 1 liter of distilled water with 1 gram of either Sodium Hydroxide or Potassium Hydroxide. Be sure to use an accurate scale when measuring out the gram of catalyst too! If it’s off, it will throw off the accuracy of all your titrations.