Dennerle Carbo Test Precision 3 Sizes Size?:Small Ammonia Alert's® sensor changes reversibly

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Dennerle Carbo Test Precision 3 Sizes Size?:Small Ammonia Alert's® sensor changes reversiblyDennerle Carbo Test Precision 3 sizes The Dennerle Carbo Precision long term tests are made of high quality crystal glass and are suitable for permanent and direct CO2 measurement in the aquarium. The white inner tube helps to see the color of the indicator liquid at a glance, regardless of the background. Thanks to the compact, spherical design, the Dennerle Carbo Precision test reacts quickly and reliably to CO2 fluctuations in the aquarium. Three