Single water test
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sera CO2 long-term indicator
Permanent CO2 monitoring
sera pH-Test
Makes it easy to monitor the pH value in fresh and marine water and ponds. For approx. 100 measurements.
sera kH-Test
Makes it easy to monitor the carbonate hardness in fresh and salt water.
sera gH-Test
Zur einfachen Bestimmung der Gesamthärte.
