Screw Thread Sample Tubes, Specialty NMR Sample Tubes
400-500 MHz
5mm OD x 158mm tube length; 178mm overall length


Type 1, Class B Borosilicate glass
4.960+/- 0.006mm OD; 0.40mm nominal wall; 0.0025 roundness
Wall Variation 0.0065mm; Camber 0.065mm; Tube Length 158mm
Overall length 178mm; Thread 8-425

The convenience of a screw cap - the security of a Teflon / glass seal.  Each tube includes an open-top cap and a Teflon / Silicone septum.  A 22 gauge, standard point needle is recommended for a clean puncture.  To maintain spinning quality, choose the tube length that places the threads closest to the spinner.  Optional lengths are available on special order.

Application Note:
These tubes are ideally suited for glove box preparation of air or moisture sensitive samples.  The screw cap provides easy access for kinetic studies.  Another proven application has been tracking the evolution of hydrolysis products within bioabsorbable materials.


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Click below for Tube Measurement instructions.
Do this before ordering. Insert this measurement in
the "Tube Lenght" box on the Shopping Cart screen.
Measurement Data Sheet