Pasteur Pipettes
•Our new pipettes display a uniformly drawn tip that can easily access the bottom of our 8” (203mm) long 5mm NMR tubes • Manufactured from borosilicate glass that meets the requirements of both theUSP (United States Pharmacopeia) Type I specification and the Type I ClassB specification for the ASTM E438 standard (formerly known as the AmericanSociety for Testing and Materials, now ASTM International). Glass meetingthese specifications possesses superior chemical resistance, and is the leastreactive glass available, exhibiting a very low level of extractable materialwhich can otherwise contaminate very sensitive or highly purified samples.This type of glass also withstands thermal shock very well because of itscomparatively low coefficient of thermal expansion
In addition to being ideally suited for use in all 5mm NMR tubes, includingour medium wall NMR tubes with walls up to 0.8mm, our pipettes alsoaccommodate our 3mm NMR tubes of 7” (178mm) length with walls up to0.38mm in our Select Series and Sample Vault Series
Our pipettes can contain a total volume of 2.5ml. Because NMR tubes of5mm diameter and less generally require no more than 1ml sample volume, ourpipettes provide ample volume while allowing a margin of safety resulting fromthe large remaining headspace
The uppermost part, or body, of our pipette measures 7mm in outer diameter,permitting use with most rubber bulbs and other pipetting devices commonlystocked in a typical laboratory.
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