• picture of 4 Glass Replacement Test Tubes with lids
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    Set of 4 replacement test tubes for the API Master Aquarium Test Kit.
  • picture of a Dissolved Oxygen Meter for Aquaculture with 7 buttons, a test wand and LCD display
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    The Dissolved Oxygen Meter is a must have for DO sensitive organisms or high bio-load environments. The HI 9147 Dissolved Oxygen Meter is designed for applications within an aquaculture operation. This unit is unique among DO meters in that comes with with a galvanic probe.
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