Our Wright Giemsa's went off line with outdated lots, stored at RT.  We
suspected evaporation of alcohol component, replaced with a new lot, all
worked well.  Storage is critical in tightly stoppered bottles, John
Kiernan gave good advice. Proper storage will extend shelf life.  

We store in the refrig to lessen evaporation and found 4C did not hurt the
staining.   


Gayle Callis
Veterinary Molecular Biology
Montana State University
Bozeman MT 59717-3610
406 994-4705
406 994-4303