The two lessons are Class A and Class B. Course A pipettes are produced to specific tolerances, or "error limits". Course B are permitted 2 times the mistake boundaries of Class A. The category specification or serial range of Course B are usually not marked. With chromatographic analyzers and autosamplers, https://cruzmxfoy.izrablog.com/29913171/the-fact-about-types-of-pipettes-purpose-that-no-one-is-suggesting