API Calcium test kit API CALCIUM TEST KIT for Seawater API CALCIUM TEST KIT measures calcium levels down to 20 mg/L to help you keep your reef population healthy. <Calcium is one of the most important elements in a reef aquarium. Invertebrates, such as corals, crustaceans,...

Reagents for HI 782&nbsp;(No3) - 25 tests

Saltwater Nitrate High Range Checker The HI782 Marine Nitrate High Range Colorimeter is specifically designed to quickly and accurately determine high levels of nitrate for saltwater aquariums and marine applications. With a digital read out, there is no more struggling to determine colors visually. • Measurements with a range up to 75.0ppm • Less...

KH Keeper Mixing pill (4mm x 10mm)

Magnesium Hardness Checker HC The hardness or hydrometric titer (TH) of water essentially corresponds to the presence of calcium and magnesium salts. It is directly linked to the geological nature of the terrain crossed. A calcareous soil will give hard water while a granite soil will produce rather soft water. The total hardness represents the sum of the calcium and...

Test Phosphate - 100 tests

Test Magn&eacute;sium - 75 tests

Reagent for Alkatronic 4 l (Concentrated) This concentrated reagent for Alkatronic will generate 20L of ready to use reagent after being diluted. The suggested measure interval for the Alkatronic is every 4 hours. 1 liter of reagent will last for 1 month. 20L of reagent will be able to perform approx. 2500 measures. Based on 6 measures a day (4 hours interval), this...

Buffer solution&nbsp;pH 4

Pocket Water Resistant pH/ORP/°C HI98121 simultaneously measures pH, redox potential and temperature. Housed in a compact and perfectly waterproof case, it combines ease of use and measurement safety. When switched on, the instrument performs...

Storage solution for electrodes (20ml) The HI703004 Solution is a storage solution prepared with quality chemicals that are used to maintain peak performance of your pH and ORP / Redox electrodes. It is important to store an electrode in solution in order to keep the glass electrode membrane hydrated. Ideally, a storage solution should be used; never store an...

Pocket pHep4 Water Resistant pH Tester HI98127 Water resistant, accurate and portable, this handy little pocket meter is a true go anywhere pH tester with replaceable electrode. The HI-98127 has a dual LCD screen that displays...