For years, purchased from Zeus (hope I got that one correct!) but got the
best deal, larger volume from Poly Scientific 516 586-0400 and aliquoted
what was needed into shipping tubes, appropriately labeled, etc.  

Poly Scientific also has rinse buffer.  

The Zeus was prepackaged in glass vials, bulk was more convenient. If it
isn't Zeus, it is Wampole, someone will come forth with phone, correct
name.

Poly Scientific won the day for pricing/quantity and quality was same
as the Zeus.

Gayle Callis