A new definition of the kilogram was necessary, in order to ensure the measurement unit is independent from a physical object. more
Uninterrupted Testing During Weight Recertification
Businesses that utilize quality assurance systems such as GMP/GLP must check their balances regularly. The check intervals are often very short, for example one day or one week. It can take up to 6 weeks for test weights to be sent to a regular recertification and testing of balances may not be interrupted during this time. For this reason, reserve weights are utilized.