Wilmad-LabGlass WG-1235-7-5 5 mm NMR Economy Sample Tube, 7", 500MHz

Features:

• Wilmad-LabGlass High-Throughput NMR Tubes are manufactured from borosilicate glass that meets the ASTM Type 1 Class B standard and recognized as N51A.
• Due to its nature, this glass has much less thermal-shock resistance than Class A glass used for Precision Tubes
• It may contain Fe2O3 which is paramagnetic around 1200 ppm and has certain impact on shimming quality at high field over 600 MHz.
• High-Throughput NMR tubes have an averaged camber of 60 microns to guarantee the spectrum resolution for small molecule (MW<250) samples up to 600 MHz.
• WG-1000 Tubes are sold in various pack sizes.
• The twist pack is made of polypropylene and resistant to common orga-nic solvents.
• The packing materials are 100% recyclable.
• Some of competitors altered MHz rating standard by advertising inferior tubes for higher magnetic field experiments.

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.