Standard cotton-plug type, but plug is not supplied. N-51A glass. Designed from ASTM E1044, Style II requirements. Pipets are calibrated to tip; with volume adjusted for blowing out the last drop. Designated by a ground band near the top. Sizes 5 mL and larger are constricted to retain plug, but…

Calibrated "to deliver" N-51A borosilicate glass Not sterilized or cotton-plugged Size 10 mL has constriction near top, forming chamber in which protective cotton plug can be inserted 7536U86 contain five shelf packs of 100 each.