Page 18 of NMR Sampling Tubes, Supplies & Accessories by Wilmad Labglass

ptfe nmr tube cap product no wg-1264-3 wg-1264-4 wg-1264-5 wg-1264-8 wg-1264-10 wg-1264-12 tube od mm 3 4 5 8 10 12 wilmad s ptfe nmr tube caps are machined to exact specifications you get better spinning stability and higher resolution spectra that s especially important at higher field strengths where spinning stability is important use these caps when using chloroform packaged in bags of 25 special nmr tube cap packaged in bags of 100 pieces and 1000 pieces product no 521-pc 521-s size 5mm 5mm cap type superior pressure serum wg-1264-5 521-pc 521-s you can use wilmad s superior 5mm pressure cap where the standard cap isn t recommended we recommend the 5mm serum cap for air-sensitive or biological samples wilmad s colorless polyethylene superior pressure cap avoids pop-offs by gripping the tube with ribs molded onto the cap s inner surface keep a package on-hand for your most valuable samples you can also protect important biological samples with wilmad s 5mm serum cap made from #990 natural gum rubber you have an easy way to hermetically seal biological or air-sensitive samples in the tube r resonance report for details about choosing or using nmr tube caps or vortex plugs request your copy of resonance report nmr-009 you can also access this resonance report at www.wilmad-labglass.com tolerance code c e i 0.000 ­ 0.013mm nominal 0.013 ­ 0.000mm d ±0.013mm h 0.003 ­ 0.013mm k ±0.13mm 12 www.wilmad-labglass.com 22

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