Manual methods are those that are done by hand, and are also known as wet chemistry or bench chemistry. Methods used include titration and distillation, as well as using a balance to weigh the mass of objects.
Buffer capacity is the resistance of a solution to pH change, in this case a grape juice sample. This is determined by measuring the amount of a basic solution needed to raise the pH by 1 unit. Buffer capacity is useful when making calculations for acid adjustments to achieve a target pH value.
We achieve economies of scale here at ETS based on the volume of samples
processed at a given time. As a consequence we are pleased to pass these
savings on to our customers, offering discounts for multiple sample
submissions. These discounts apply only to samples submitted at the same