We need to have an alternative to marking our prostate needle biopsies.  We 
have been using merchrochrome (not sure if I spelled that right) but need to 
have something that colors other than red.  Any suggestions?

Also we are having a tremendous amount of debris in the H&E staining line.  
We use an automated stainer and have changed, filtered and bleached 
everything possible and still the debris remains.  Help.