Conversion Tool  Decimal Inches   mm       If you require a flowtube not listed on our Standard Flowtube page, please either send us an email or complete the details below.   Length Tolerance ± Internal Diameter Tolerance ± Outer Diameter Tolerance ± Material Clear Fused Quartz Cerium Doped Quartz Titanium Doped Quartz Pyrex Samarium Doped Glass   System   The diagram must be updated prior to continuing. Selected Material       length               Internal Diameter       Outer Diameter               © First Light Lamps Limited | Designed by rOar