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    …Phosphorus X 3.066) / 1000 = ppm Phosphate Phosphorous to Phosphate Conversion Chart   HI98107 pHep Waterproof Pocket pH Tester With two point calibration, the HI98107 pHep pH Tester is perfect for any aquarist that wants an accurate reading within seconds. Just dip the electrode end of the meter…


    …large LCD window down to a resolution of 0.01 pH.    Monitor your aquariums temperature and pH all with a single pen-style tester. Hanna's HI98108 Waterproof pHep+ Tester can give you pH readings from 0.00 all the way up to 14.0 pH making it perfect for saltwater or freshwater aquariums. The HI98108…


    Designed for Simple Aquarium Salinity Testing Hanna Instruments HI98319 Marine Salinity Tester measures electrical conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are measured, and then using the temperature reading,…

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