What is the term for dispensing older solutions before newer solutions?

The term for dispensing older solutions before newer solutions is known as "First in, first out inventory." This approach is commonly used in various industries, including healthcare and retail, to ensure that the oldest stock is used first. By doing so, the risk of expiration or obsolescence of products, particularly those with a limited shelf life like contact lens solutions, is minimized. This method helps maintain product quality and safety for consumers.

In practice, implementing a first in, first out system contributes to more efficient inventory management, reduces waste, and optimizes operational costs. By focusing on the age of products, dispensers can ensure that customers receive the freshest and most effective solutions, which is especially crucial in fields where product efficacy is vital, such as optometry.