[Histonet] Special Stain kits Vet lab ques?

[Fran Pearsall]

This is an SOP question. I have several older kits that I have made up 
in-house solutions to replenish certain stains that have been used up 
without having to order a whole new kit. (eg. decolorizer) How do word 
the Stain SOP to be put into practice? How often will I have to revise 
it officially until a new kit is purchased? If the stain is coming out 
correctly, will this pass ISO standards?

Thanks for any help
Fran