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Direct current pumps have several key advantages over traditional AC pumps
If your photometer is out of specification for any reason
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stands guard
Hanna Instruments Calcium Checker - HI758 Montipora Direct current pumps have severalAlways get accurate results for your saltwater aquarium with our handheld colorimeter. Our saltwater calcium colorimeter fills the gap between calcium test kits and advanced instrumentation. Standard test kits have limited accuracy as they depend on the human eye to determine colors. Our handheld colorimeter eliminates the trouble of matching to a color chart by providing a direct saltwater calcium result in ppm Ca2+. Our portable handheld colorimeter