RE: [Histonet] FW: Pararffin

From:"Ford Royer"

Beverly makes a definitive point here.  Turning off an embedding center
every night, allowing the paraffin to solidify; then turning it back on in
the morning and forcing it melt the solidified paraffin will do more stress
to the embedding center than to the paraffin involved (assuming that you
keep your paraffin temps. within reason).  When the reservoir is up to temp,
it only takes a few intermittent electrical pulses to the heating elements
to keep it "at temp".  Making the embedding center heat and melt solid
paraffin every single morning will take years off the life of the
instrument's heating elements.  Keeping it on all the time (and "At
Temperature") uses about the same amount of energy as a 40 watt light bulb
in a 24 hour period.  The only time I could see that it would make sense to
turn the unit off is if you do not work weekends or holidays ("3-day

Ford M. Royer, MT(ASCP)
Minnesota Medical, Inc.
7177 Madison Ave. W.
Golden Valley, MN 55427-3601
CELL:  612-839-1046
Phone:  763-542-8725
Fax:  763-546-4830

-----Original Message-----
[] On Behalf Of Beverly
Sent: Monday, March 10, 2008 11:55 AM
To: 'Hannen, Valerie';
Subject: RE: [Histonet] FW: Pararffin


For the very little it costs to keep paraffin melted overnight vs the wear
and tear on your embedding unit to have to melt down the paraffin daily and
the loss of quality in your paraffin I would think that in the long run you
would have saved money by keeping your machine on.
We own our own lab and try to save every penney, but have never considered
your pathologist's suggestion and at this point never will.
Paraffin does break down faster when it is heated and remelted even once. 

Beverly Robinson
Laboratory Manager
Histology Tech Services, Inc.
Phone: 352-338-0045
FAX: 352-338-0027
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-----Original Message-----
[] On Behalf Of Hannen,
Sent: Monday, March 10, 2008 11:51 AM
Subject: [Histonet] FW: Pararffin



From: Hannen, Valerie 
Sent: Monday, March 10, 2008 9:12 AM
To: ''
Subject: Pararffin

Good Morning fellow histonetters!!
   My Section chief has asked me to post this question.
   Does it hurt the paraffin to go from liquid to solid and back again
   Our Pathologist is trying to save the hospital money...he has ask us
to put
   our Embedding station in a "Stand-by Mode". 
             Valerie Hannen, MLT(ASCP),HTL,SU(FL)
              Parrish Medical Center
              Titusville, Florida


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