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1.7 mm 19F sensitivity reference tube
1.7 mm 13C sensitivity & 1H decoupling reference tube
1.7 mm 1H lineshape reference tube
1.7 mm water suppression reference tube for RT probes (10 mM sucrose)
1.7 mm 31P sensitivity reference tube
1.7 mm gradient recovery reference tube
1.7 mm 1H sensitivity reference tube
1.7 mm water suppression reference tube for Cryoprobes (2 mM sucrose)
1.7 mm 15N & 13C pulse calibration tube
1.7 mm 13C sensitivity & resolution reference tube (ASTM)