Transferring liquid nitrogen from one of our MVE Lab Series Dewars is much easier with a MVE Pouring Spout. The rubber plug expands when tightened to fit snugly into the neck of the dewar, allowing LN to be safely and easily poured.
MVE5/PS - Fits LAB5, LAB10 (LAB20 made after June of 2007) (Min ID of 2.2", Max ID of 2.75")
MVE30/PS - Fits LAB30 & LAB50 (Min ID of 2.5", Max ID of 3")
Not sure if your LAB20 Series Dewar was made after June 2007? The MVE Serial number on your MVE Lab Series Dewar will tell you the date it was manufactured.
Example Serial #: NP B20 [12 52] 1817 = The 6th and 7th digits represent the YEAR and 8th and 9th digits represent the week of the year manufactured.