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The safety regulations included the statement: "Never pipette by mouth KCN, NH3, strong acids, bases and mercury salts". Some pipettes were manufactured with two bubbles between the mouth piece and the solution level line, to protect the chemist from accidental swallowing of the solution.
Under average conditions, most pipettes can be calibrated semi-annually (every six months) and provide satisfactory performance. Institutions that are regulated by the Food and Drug Administration's GMP/GLP regulations generally benefit from quarterly calibration, or every three months. Critical applications may require monthly service, while ...
(These are for Class A pipettes; Class B pipettes are given a tolerance of twice that for the corresponding Class A.) A specialized example of a volumetric pipette is the microfluid pipette (capable of dispensing as little as 10 μL) designed with a circulating liquid tip that generates a self-confining volume in front of its outlet channels. [3]
A small pipette allows for more precise measurement of fluids; a larger pipette can be used to measure volumes when the accuracy of the measurement is less critical. Accordingly, pipettes vary in volume, with most measuring between 0 and 25.0 millilitres (0.00 and 0.88 imp fl oz; 0.00 and 0.85 US fl oz). [2]
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Agricultural Regulations “As head of HHS, RFK Jr. would likely influence food policies, ... At the same time, per Lokenauth, new safety standards might influence packaging costs.
In Kennesaw, Georgia, it's against the law not to own a gun.. The city law, dating back to the 1980s, makes it a requirement for residents to own guns and ammo. Kennesaw's gun law states: "In ...
The U.S. Food and Drug Administration (FDA) recently announced a new strategy around berry safety.
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