Class B: The different among Class A/AS and Class B is that the mistake boundaries for Class B are 2 times that allowed courses A and AS, Course B pipettes can be made from plastic, and the shipping and delivery program (TD, Ex) waiting around time is not specified.[four] stem https://felixrxxup.loginblogin.com/36014244/how-much-you-need-to-expect-you-ll-pay-for-a-good-types-of-glass-pipette