A few things about buying liquid nitrogen dewars
1. Check around for deals - I found a set of 2 - 20L dewars for $500 on a lab auction site. You can sometimes find some deals on ebay although not as much.
2. Be careful if you are going to buy your dewars used, the principal behind a dewar is a double walled vacuum chamber which works as an insulator. Sometimes when buying a dewar the vacuum chamber has beencompromisedand thus you loose your liquid nitrogen a lot faster.
With all of that in mind, I checked out the chef rubber dewar and it seems like a pretty good deal for a new 10L. Although the item description states that the dipper is for removing the liquid nitrogen I would double check with them because anytime I've seen dippers, they were for submerging products in the liquid nitrogen (they areperforatedwith holes on the bottom of the wand).
When I transport my liquid nitrogen I wedge my dewar between the door of my hatchback and my backseat. It is also helpful to strap it down using some bungie cables or something similar. The biggest concerns with transporting it isaffixationdue to the release of the gas, so you solve this by riding with your windows down. The second biggest concern is having liquid nitrogen thrown about the car if you happen to stumble into a car accident, you can come close to solving this by securing the liquid nitrogen in a part of the car or truck that prevents it from coming near you should you be in an accident. Although both of those scenarios are unlikely, you still need to be vigilant when working with liquid nitrogen. Good luck and if you have any other questions, you know where to come.
Joe
