Is the statement "One centimeter is the normal path for an ultraviolet quartz cell" true or false?

The statement "One centimeter is the normal path for an ultraviolet quartz cell" is true because in laboratory practices, particularly when using ultraviolet (UV) spectrophotometry, the standard path length for cuvettes made of quartz is typically set at one centimeter. This standardization is important because it allows for consistency in measuring the absorbance of samples. The use of a one-centimeter path length is a common practice that aligns with the Beer-Lambert Law, which is foundational for quantifying concentrations of solutions based on light absorption.

UV quartz cells are specifically designed to transmit UV light without absorbing it, which is critical for accurate measurements in UV spectroscopy. The one-centimeter path length facilitates optimal interaction between the light and the sample, enabling reliable data collection. Thus, the statement accurately reflects standard operating procedures for using UV quartz cells in laboratory settings.