Constricted NMR tubes provide the most convenient way to flame-seal an air sensitive sample. Simply apply vacuum to the tube using our Tip-Off Manifold then heat the constricted portion and twist off; the sample is sealed in the tube. Order a constricted NMR tube by adding "CONS" to the product number of any Wilmad sample tube. Example: 507-PP-7CONS Unless otherwise specified, constrictions are placed 1 inch from top of tube. Order tubes that are 1 inch longer than your required finished length. Note: There is an additional charge for constriction. Please see table below, charges are per tube.
5 mm OD Tubes
Learning: Science Lab Equipment & Supplies Glassware Plasticware Manifold Valve - 552-5-O - Viton O-Ring For 5 Mm Tip-Off Manifold
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