RE: Marking pens

From:Cynthia Favara <>

I had the same problem last week with light markings after processing. I'm
thinking of going to the trusty #2. Please let me know what you find out.
Cynthia Favara
Rocky Mountain Laboratories
903 S. 4th Street
Hamilton, MT 59840
FAX 406-363-9286

-----Original Message-----
From: Jim Staruk []
Sent: Monday, November 13, 2000 6:15 AM
To: HistoNet Server
Subject: re: Marking pens

Dear Connie and others,

I also ran into a disastrous situation last week because of marking pens.  A
client delivered many cassettes, all marked with marking pens (I don't know
which make and he's on vacation this week, so I can't ask him).  We
processed half of them and when we went to embed them, about half of the
cassettes were totally blank.  The numbers were completely washed off!  The
others were from light to pristine.  I took the remaining un-processed
cassettes and re-labeled each one on the side with my trusty #2 lead pencil.
I monitored this batch and noted that all numbers were pristine going into
the first paraffin bath.  When it was time to embed them (two changes of 58
degree paraffin, 2 hours each), about half of the cassettes were blank!  The
pencil numbering on the sides saved us.  When we grouped the cassettes into
their appropriate cases, I noticed each case was either pristine or
completely washed off.  My conclusion was that different pens were used for
different cases and there is a bad lot of pens out there (if, in fact he
used the same brand for all of his cases).

I have used #2 pencils for 25 years and have never lost a number.  I keep an
electric pencil sharpener close by to keep the points nice and sharp.  My
philosophy is:  If it isn't broken, don't fix it!

If you want, I'll inform this group next week which pens were used in the
above case.


James E. Staruk, HT(ASCP)
Mass Histology Service

> -----Original Message-----
> From: Connie Grubaugh []
> Sent: Sunday, November 12, 2000 6:26 PM
> To: HistoNet Server
> Subject: Re: Daily Digest
> Reguarding  Securline Marker ll Superfrost marking pens.
> In  the past couple of weeks we have been having a lot of trouble with
> these pens, the numbers have been coming off during processing and when
> we scrape the paraffin off the blocks the number goes with it.  We write
> the number on the top and on the sides.
> If anyone has any insight into this problem I would appreciate your
> comments.

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