What is the appropriate method for achieving a 20 to 1 dilution ratio in a laboratory setting?

To achieve a 20 to 1 dilution ratio in a laboratory setting, you would mix 1 part of the substance you want to dilute with 19 parts of the diluent (usually water or another solvent). This will result in a total of 20 parts, with the original substance being diluted by a factor of 20.