[Histonet] Metabisulfite rinse for PAS reaction (potassium vs sodium)

[Angela Lamberth]

In Carson’s 3rd edition, the reducing rinse following Schiff for PAS is
0.55% potassium metabisulfite (pg 137-138). For PAS/AB the reducing rinse
is given as sodium metabisulfite (Carson pg 149).



My other texts (Sheehan/Hrapchak as well as Vacca) list the reducing rinse
as sodium metabisulfite which makes sense to me since the Schiff is made
with sodium metabisulfite.



Is this a printing error in the Carson book? I appreciate any light anybody
can shed on this.

-- 
Angela Lamberth
Histology Technician III
Histology Core Lab
La Jolla Institute for Allergy & Immunology
9420 Athena Circle
La Jolla, CA 92037