Kontes' 3mm NMR tubes are manufactured from ASTM Type I borosilicate glass and their performance is assured by state of the art manufacturing and inspection processes for camber and concentricity. These high resolution tubes will meet stated dimensional specifications and will produce accurate results according to the field strength of the NMR spectometer. Each tube is supplied with a polyethylene cap.
T.I.R. = Total Indicator Reading in inches.