We all of us have/use 'invisible ink regularly, probably without knowing that
we do...

Most laundry detergents contain "whiteners", which are really UV active dyes,
to "whiten" our clothes.   (Shine a UV light on your clothes, and watch em
light up!)

We use them for QC purposes, to add to certain ingredients, so that we can
assure that this ingredient is added to the final product.

One of my rules in life (re: invisible ink) is that "Forgiveness is easier to
get than permission", so I would put invisible ink on the board (I can
volunteer to supply small amounts at no charge) and if the customer screams, tell
him you rubbed the board against your clothes, and it musta transferred, right?

Good hunting and fishing...:-)

Rudy Sedlak
RD Chemical Company

---------------------------------------------------
Technet Mail List provided as a free service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/html/forum.htm for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315
-----------------------------------------------------