Dear Histology Professionals,
I am using the Azure B as a counter-stain for melanin preparing solution by the
protocol below. My questions are:
1. Is this solution should be fresh prepared every day?
2. How long I can store and use this solution?
3. Where this solution should be stored in the room or in the refrigerator?
My protocol is:
Counterstain Method
The use of Azure B as a counter-stain will stain melanin a blue green
color.
Azure B working reagent:
4mL of a 25mg/mL aqueous solution of Azure B
3.4mL of 0.1M acetic acid
600uL of 0.1M sodium acetate
27mL of DI water
5mL acetone
Incubate for up to 30 minutes, followed by a 20-second
hematoxylin counter-stain. The use of either counterstain should give you good
cytological detail, with blue-green melanin and brown DAB specific signal.
Thanks in advance,
Naira
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