Jeanine Bartlett, HT(ASCP)
Centers for Disease Control
Infectious Disease Pathology
Activity
1600 Clifton Road, MS/G-32
Atlanta, GA
30333
Dear histonetters,
I need help of those, who are familiar to Gomori
Methenamin Silver staining.
I have troubles to convince my colleages about
the advantages of using a stock meth-silver-solution. (instead of fresh making
each time)
stock: 1:40 10%Silvernitrate :
3% Hexamethenamin (stable for few months);
working: 1:10 Borax : stock
My colleages think, that the stock solution
soon becomes instable. And that there is a kind of sediment at the bottom
of the bottle (more concentration of silver).
Can anyone tell me about bad experience with
older stock solutions? What happens, when the stock solution is older than two
(or three,..) months? Is the result of the stain weaker or
darker?
Question 2:
What is the the function of Hexamethenamin? I
know it causes the high pH, but does it make any compound with
the silvernitrate?
Any help is welcome
Best wishes from Austria
Gudrun Lang
Akh Linz,
Austria