This item has been on MANUFACTURER DISCONTINUED. We recommend trying Tetra Test Kits
Tetratest Laborett Kit Reliable and accurate, the Laborett Testing Kit for freshwater and marine aquariums
provides professional measurement of the most important aquarium water parameters:
pH freshwater and pH saltwater, carbonate and general hardness, nitrite, ammonia and
carbon dioxide. The Tetra Laborett Kit includes reagents, two test vials, a water
withdrawal syringe, color scales, and instruction booklets with recommendations and
Pretty good test assortment by snowballs5 from Hayden, ID02/21/2012
I have been having difficulties finding out what brand is best for accurate testing. I get mixed results with different brands. This test didn't answer that question for me but using these with others seems to narrow down which ones are still at issue.