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Velocity Vehicle Care Blog

How to Perform a Titration for Alkaline Chemicals - Step by Step

Posted by Valerie Lawrenz on Nov 6, 2018 12:10:24 PM

Car Wash Chemical Titration

Keeping on top of the chemistry in a car wash is critical to ensure that you are delivering a consistent quality to your customers, but also that you are not wasting product or at risk of causing vehicle damage from over dosing. In a touch free wash this critically important, as you are relying on the performance of your soaps to deliver clean, shiny cars. The most common and simple titration to do is on your presoaks, as these are the highest use in volume and the most likely to affect your wash results.

This month we will show you how to do an alkaline titration. The actual results will be dependent on the particular product you are using and you should talk to you chemical supplier to provide you with the test method and table for their products. We are often asked about using pH for testing chemical strength. While pH has a role to play in the car wash environment, it is not an accurate measure of the chemical strength. A titration will measure the amount of “free alkalinity” available to provide cleaning power, and is therefore a much more accurate test of strength and performance.

How to Perform a Titration for Alkaline (Hi pH) Chemicals

Step One: Rinse the sample vial with the test solution.

Step Two: Fill the test tube to the 10 ml mark with the solution to be tested.

Car Wash Chemical Testing

Step Three: Add 3-5 drops of Indicator P (#014). Mix

Car Wash Chemical Testing

Step Four: Titrate with reagent 1.0N Hydrochloric Acid (#085) one drop at a time, counting and mixing between each drop until the solution changes from pink to colourless.

Car Wash Chemical Titration

Step Five: Record number of drops.

Step Six: Consult Product Specification Sheet (PSR) to calculate product concentration.  PSR's for all Velocity Vehicle Care products are available for download at

Click Here to download a PDF copy of 'How to Perform a Titration for Alkaline (Hi pH) Chemicals'

Car Wash Chemical Testing

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