[Histonet] Precipitate in Processor

[Adrienne Aperghis Kavanagh]

Hello Everyone,  

Has anyone ever seen a (salt?) precipitate in their alcohols following formalin?  While changing the processor this morning, I noticed a precipitate in the 80% alcohol and 95% alcohol (NOT in the 70% alcohol).  It is white and grainy.  The alcohols were otherwise unaffected.

We are using a 10% NBF containing:
Formaldehyde
Water
Sodium Phosphate, monobasic
Sodium Phosphate, dibasic
Methanol

And our alcohols are all reagent grade.

Any help would be very much appreciated!  Thank you in advance!


Adrienne Aperghis Kavanagh 
US PATH 
30 W. Century Road 
Suite 255 
Paramus NJ 07652