That pic is great. I have only seen the headshot though. Could you PM me the whole pic? ANYWAY...
I have the Seachem Marine test kit, but it is perfectly suitable for freshwater too. The test has a reagent for measuring total ammonia (harmless ammonium bond) as well a test for the lethal free ammonia. The test utlizes yellow discs placed in measured amounts of sample water and after 15-30 mins you measure the color of the discs versus a chart. Many people in the SW forums here and at (GASP!) reefcentral.com (great bunch of people, there are literally 5-10 times more people in those forums) said that The Seachem tests, although pricey are the most accurate and one of the only tests that does indeed test for free and total ammonia. As a side note, almost all other test kits unless specified only test for total ammonia.
Has anyone here used this test kit?