Looking at pics of Van Dorn Bottles (thank you google), I wonder if there's enough metal on them to make a metal detector useful. OTOH, a VD bottle is basically a tube with two spring-loaded rubber caps. I'm surprised the researchers find it expeditious to hunt for the lost one. If the lab supply company charges too much for a new one, just make the luckless grad student fashion his/her own from scratch - just like Prof. Van Dorn did.
(1) the student will learn a few things about equipment and (2) they'll definitely learn how to tie a decent knot!
-Don ( a grumpy old scientist who laments that too many grad students these days don't know to use a screw driver. Bah, humbug.)
(1) the student will learn a few things about equipment and (2) they'll definitely learn how to tie a decent knot!
-Don ( a grumpy old scientist who laments that too many grad students these days don't know to use a screw driver. Bah, humbug.)