Entries by Kei Sakamoto

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Thoughts on the Minimum Weight

Today’s topic regards minimum weight for balances and is based on information from the U.S. Pharmacopeia (USP), an organization that makes standards to ensure the quality of pharmaceutical products. The following is a summary of the contents of USP Chapter 41 Balances.　 “Unless otherwise stated, when substances must be accurately weighed for analysis, the measurement […]

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Operation of Microbalances for Elemental Analysis

Microbalances with minimum displays of 1.0 to 0.1 μg are used in the inductively coupled plasma (ICP) method for elemental analysis. One microgram (μg) is equivalent to a one-millionth of a gram. Common reasons that a microbalance is used are that elemental analysis is quantitative and small samples of a few milligrams are used. A […]

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Development of AD-1641: Air Flow Logger

A&D has developed an air flow logger capable of detecting breezes with speeds below 1m/s. For this development story I have put some material together on the background behind the development the air flow logger and also some market information related to safety cabinets. A few years ago we developed and started selling the BM […]

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Development of the GX-A/GF-A Series

For this installment of the developement series I would like to share some details on the ongoing development of the successor models to the GX/GF Series of Precision Balances released 15 years ago. These top loader balances have the mass sensor mechanisms and the circuit board housed inside a case with the weighing pan placed […]

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Development of Balance for Animals

Animal testing is used to accomplish the crucial task of evaluating the safety and effect of medicine before testing on humans occurs in the development process for new medicines. At facilities that perform these tests many tools ranging from balances for measuring weight to microscopes for observation are used for analysis. In the past analytical […]