Any chance that the pens are Lot 1266? (Look on the side of the pen.)

We had the same thing happen with this lot. Pens from other lots were OK.

We reported this to the company, and returned the pens. They replaced
it with . . . . Lot 1266!!! These new pens, same lot, also "wash off"
during processing.

Found an old box with a different lot number, and not having any
problems.

Trying to get the pens returned, and hopefully replaced with a
different lot number.

Peggy A. Wenk, HTL(ASCP)
William Beaumont H