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5 mm Step Down Ultra-Thin Wall Precision NMR Sample Tube 9" L, 350MHz
Product No. Price Each Quantity Action
547-PPT-9 $27.98  

Wilmad-LabGlass's NMR Precision Tubes are manufactured from borosilicate glass that meets the requirement of Type 1 Class A glass from ASTM E438. Precision Tube has 3 fold less paramagnetic contamination comparing to the Economy tube, and can be operated safely at temperature up to 230 ˚C, and within a temperature step of 120 ˚C. Precision tube is rated as hydrolytic class 1, which states that the inner surface is resistant to strong acid and base at ambient temperature.

Wilmad-LabGlass is adopting a unique precision shrinking and grinding process to shape the inner surface with maximized filling factor, and a tight ID and OD tolerance as small as 0.0065 mm. None of our competitors are capable to offer even close products. Each of our individual NMR tubes released into the market has been manufactured in the state-of-art facility in the United States and passed multiple NIST traceable gauge control and optical surface defect checks.

This ultra-thin wall Precision tube features a 15% more sample volume than the standard wall Precision tube, and 25% more sample volume than the Economy NMR tube. The length of the ultra-thin wall protion is 2".


MHz Rating: 350
Length (inch): 9
OD (mm): 4.9635 ± 0.0065
ID (mm): 4.4965 ± 0.0065
Description: Step-down Ultra Thin
Wall Thickness (mm): 0.24
Concentricity (microns): 51
Camber (microns): 13
3 mm Economy
Material ASTM Type 1 Class A Borosilicate Glass
Impact on shimming quality by paramagnetic impurities1 Small (400 ppm Fe2O3)
Rapid cooling/heating Yes, within 120 ˚C
Max. working temperature 230 ˚C
Sample volume reproducibility2 0.5%
Averaged Sample Volume within Rf  coil 158.8 µl/cm
Outer Diameter 4.9635 ± 0.0065 mm
Cut-off wavelength 320 nm
Compatible with Small Volume Insert Customizable
Recommended Application Experiments that require critical shimming quality

Note 1: Impact on shimming quality varies upon magnetic field strength. Economy tube is recommended for 1D low field experiments.

Note 2: Sample volume reproducibility refers to the maximum volume fluctuation when filling different NMR tubes to the same sample height. This number correlates to the reproducibility of time domain signal amplitude between different runs.