www.hannainst.com

They ship so fast, I always go straight through them. I wish the shipping was cheaper but the price ends up the same if you buy it somewhere else.

I love your testers...we are definitely a Magnesium Tester that we can use in the Reef Tank Hobby. Please...can you make one? I'll pre-pay for mine now. Thanks, Tony

Arrived quickly, everything neatly packaged thanks again

Quick shipping!! Folks were very informative!!

Hanna did a great job!