4 mL Volumetric Reusable Transfer Pipets Pipettes - New/Used, Class A/B - Choose

Description

Borosilicate/Pyrex reusable
4 mL volumetric transfer pipets.
These loose pipets have been warehoused for a while and have been cleaned.
Those sold as "new other" appear as if just out of the box.
Those sold as "used" show signs of wear, typically characterized by friction marks at the bulbs and/or tips (see photos). The wear does not affect performance of the pipets, but they are clearly not cosmetically as they were when new.
Class A pipets have a specified tolerance to +/- 0.01 mL To Drain (TD)
Class B pipets
have a specified tolerance to +/- 0.02 mL To Drain (TD)
Orders will be filled with various manufacturers' (models) such as those listed below:
Class A
Kimax (37002-4)
Fisher (13-650E)
Corning (7100A)
Class B
Kimax (37000-4)
Corning (7102-4)