Identify water-quality problems in your aquarium with speed and accuracy. Mardel Test Strips employ the same technology used by physicians, clinics and hospitals to streamline aquarium testing. Convenient test strips eliminate time-consuming mixing of chemicals; you simply dip the strip in the aquarium water and within 60 seconds check your results against a color coded chart. It's that easy. The strips contain absorbent pads saturated with specially-blended, nontoxic chemicals that turn different colors when exposed to certain substances in water.
5-in-1 Test Strips (25 count) measure pH, hardness, alkalinity (buffering capacity), nitrite and nitrate in freshwater/saltwater.
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