How often must balances capable of weighing small quantities be tested and sealed?

Balances that are used for weighing small quantities in a pharmacy must be tested and sealed annually to ensure their accuracy and reliability. This requirement is crucial because even slight discrepancies in weight can significantly affect the dosing of medications, especially when preparing compounded prescriptions or conducting any precise measurements. By ensuring that balances are tested and sealed every year, pharmacies comply with regulatory standards and maintain the integrity of their pharmaceutical preparations.

The annual testing allows for regular calibration and maintenance, which is essential to prevent potential dosing errors. It ensures that balances continue to perform accurately and meet the necessary professional and legal standards for practice.