Buffers have many applications. Some of these are:

1)Maintenance of life:Most biochemical processes work within a relatively small pH range. The body uses buffers solution to maintain a constant pH.For example, blood contains a carbonate/bicarbonate buffer that keeps the pH close to 7.4.

2)Biochemical Assays:Enzyme activity depends on pH, so the pH during an enzyme assay must stay constant.

3)In shampoos:Many shampoos use a citric acid/sodium citrate shampoo to maintain a slightly acidic "pH balance".This counteracts the basicity of the detergents present in the shampoo.

4)In baby lotions:Baby lotions are buffered to a pH of about 6.This hinders the growth of bacteria within the diaper and helps prevent diaper rash.

5)In the brewing Industry:Buffer solutions are added before fermentation begins.This prevents the solutions becoming too acidic and spoiling the product.

6)In the textile Industry:Many dyeing processes use buffers to maintain the correct pH for various dyes.

7)In laundry detergents:Many laundry detergents use buffers to prevent their natural ingredients from breaking down.