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HYDROMETERS
By Hagen, Tropic Marin & Red Sea |
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Hagen Hydrometer and Thermometer
- Accurate Available in 8" or 12" model. #192026 - 8" model ~ $5.99
Tropic Marin Precision Hydrometer
These high precision hydrometers are handmade in Germany by experienced craftsmen. They have a maximum deviation of 0.0005. These hydrometers never need calibration. Indispensable for scientists and the committed hobbyist. The higher price will soon pay off by an always exact salinity in the aquarium. Scale from 1.018 to 1.028, with a marked recommendation range 1.021 to 1.024. #510025 - $31.99
Red Sea Hydrometer with Digital Thermometer
Hydrometer with digital thermometer for Continuous or Periodic reading of Specific Gravity in saltwater aquariums Hydrometer: floating needle type with readable scale from 1.010 to 1.030 in 0.001 graduations. All swing-arm plastic hydrometers for aquarium use are only accurate when used within the normal range of operating temperatures for marine aquariums (approx 25 deg C / 77 deg F). Red Sea's hydrometer is supplied with a digital thermometer to ensure that the water being tested is at the correct temperature #120109 - $9.99
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