A volume of 2 μL is about 2 mg and the balance requires a resolution of 1 μg (0.001 mg). The AD4212B-PT can display mass at a resolution of 0.001 mg up to 5 g so 2 μL pipettes can be inspected. One μg is about 1,000,000th of a one yen coin (about 2,500,000th of an American penny). As you can imagine, measuring at 1 μg is not a simple task and the measuring environment is extremely important. When setting up the tester, ensure that the following conditions are met.
- Avoid measuring on a weak foundation, on the second floor or higher, in the center of a floor away from the support pillars, in earthquake-proof structures, near tall structures, along heavily traveled roadways, etc.
- Place the balance on a stand.
- Prevent direct contact with air blown from air conditioners, etc.
- Perform tests in a temperature and humidity controlled room.