In response to James Mohler's query about discontinued gelboxes (though
my mailer can't seem to handle Reply today):
My neighbor, Doug Vizard, works at Kodak, so I passed this one on to him
while dropping our kids at the bus stop.
He says: Indeed the IBI gel boxes are alive and well. I, too, am
partial to them. They can be had (probably at the best price and
availability) from the folks that bought the whole line - they are
Shelton Scientific. Their web site (complete with related pictures) is
I, personally, am unaffiliated with either company, but the many, many,
many Southerns and Northerns for my thesis were run in IBI boxes.