"Safe" ink refills???

[MorganGrafixx]

I am researching ink refills that are "secure". A potential client loves my pens, but he must have ink that is considered safe for check writing that can't be "washed". After some looking and a LOT of reading, I've come to find out that the Uni-Ball 207 series does prevent check washing. Looking through the Uni-Ball site, I can only find the Pens themselves that use this ink. I can't find out if/where just the ink refills are sold. When I find that out, I will need to know if they fit in the pens we make.
If anyone out there has a list or some resource I can use to find out the "safe" inks/refills I would be most grateful to borrow it.

 

[Crickett]

I buy those refills at my local stationary store, Staples. The refill fits perfectly in the Sierra Click without having to use the little extension on the end of the refill.

 

[Monty]

Someone please correct me if I'm wrong, but IIRC, the ink in the Parker style gel refills are supposed to be "safe".

 

[bitshird]

Mannie you are right, the Gel refills are Supposed to be unwashable or at least resistant to washing/bleaching.

 

[BRobbins629]

See this thread

http://www.penturners.org/forum/showthread.php?t=75182

I got mine at Office Max

 

[Dan_F]

Noodler's makes some fountain pen inks that are guaranteed to be safe from all manner of forgery/alteration techniques.

Dan