It should in its place to become pressed so the gap in the bulb would make an air-tight seal towards the mouth on the pipet. Note listed here that Dr. Reilly has squeezed the bulb in advance of he pressed it against the mouth from the pipet. A recent introduction https://types-of-pipette-ppt34333.thechapblog.com/28884452/top-latest-five-types-of-pipette-and-their-uses-urban-news