The Sample Vault™ Series NMR tubes with NorLoc™ caps are engineered for a new generation of high-throughput lab automation systems. Designed to be used with 96 position carrier’s using103.5 mm (4”) long NMR tubes with open port caps, or 178 mm (7”) long NMR tubes with closed port caps. NorLoc™ caps have superior holding and sealing capabilities which eliminate cap/tube failure in your instrument. Our patent pending design incorporates a blue band positioned on the NMR tube that aligns with the base of the cap, indicating a properly locked position. Our NorLoc™ cap and Sample Vault™ tube is an integrated closure system for fail-safe delivery of your sample into the magnet. We offer Sample Vault™ tubes in both 3mm & 5mmfor use up to 700 MHz and up to 950 MHz.