Anhydrous Copper Sulfate (grey) will turn Aqua blue if any water is present
in the solutions.  It becomes hydrated copper sulfate a bright blue
chemical.



Susan Meloan
Chief Histotechnologist
Department of Pathology
Medical College of Georgia
Augusta, Ga 30912
(706) 721-3630
e-mail: smeloan@mail.mcg.edu



>>> Rita Riddle <RitaR@lexhealth.org> 01/26 4:45 PM >>>
HELLO HISTONETER,
WE HAVE 2 VIP'S ONE IS 10 YEARS OLD AND WE HAVE THE BRAND NEW VIP WHICH IS
ABOUT 4 MONTHS OLD. MY QUESTION WE ARE FINDING OUT THAT OUR ALCOHOLS HAVE
CHANGE IN STRENGTH. WE ARE PUTTING OWN 80,95,100%. WE ARE FINDING OUT THAT
SOMETIME THE TISSUE LOOKS LIKE IT IS COOKED. WHEN WE START CHECKING THE
SOLUTION WE ARE FINDING THAT WE DO NOT HAVE TRUE %. ONE OF OUR PATHOLOGIST
SAID WHEN HE WAS IN SCHOOL THERE WAS A SOLUTION THAT YOU PUT IN THE SCHOOL
TO LET YOU KNOW IF IT WAS A TRUE 100% IT WOULD TURN COLOR. HE CAN NOT
REMEMBER IF WAS PINK OR BLUE. ANY SUGGESTION OWN HOW WE CAN SOLVE THIS
PROBLEM. WE USE A LOT OF AGAR WITH OUR SMALL SPECIMEN SO THINGS ARE BRITTLE
AND HARD. TRYING REPROSSING AND IT WAS JUST AWFUL. THANKS FOR ANY
SUGGESTION.

RITA