Determination of acetic acid concentration in commercially available white vinegar is one of the simplest and easiest titrations. It is also possible to determine concentration of acetic acid in other types of vinegar. The only problem is that the color of the vinegar can make it difficult to spot the end point. However, in most cases even vinegars made of red wine - after being diluted for titration - are pale enough so that the phenolphthalein color at the end point can be easily spotted.