Converter for Waterman Hemisphere

For my birthday, I decided to buy the matching fountain pen to the Waterman Hemisphere Moonlight ballpoint my girlfriend bought me.

I quite like it. Trouble is, ink converters are sold separately.

Can someone recommend a high quality ink converter that will work well with this pen?

This pen will go most places with me in my pocket, and I can't have any malfunctions causing ink explosions in six months, so I'm willing to spend a little more.

Thanks in advance.

Not to point out the obvious, but how about a Waterman converter?

Waterman write better using Waterman convertors.

Have to agree with the others, but any international standard sized converter should work. Unlike Parker, Lamy, Pilot they don't use a proprietary size.

Thanks for the responses. A Waterman converter is the obvious choice, however reading reviews of it on Amazon, apparently they've redesigned it, and there have been quality control complaints. What I'm unable to determine is whether it's a Waterman issue, or a substandard-knockoffs-infiltrating-the-market issue.

I might have found something that will do:

http://www.ebay.com/itm/131214475113

That's a good one.

Montblanc makes another high quality converter that fits.