Two Little Fishies Accurasea 250ml

Two Little Fishies AccuraSea 250ml is a real seawater reference solution for precise salinity calibration. Micron-filtered and UV-sterilized, it's adjusted to standard salinity (S = 35, 53 mS/cm at 25°C). Use it to calibrate refractometers, verify hydrometers, and validate test kits. Essential for maintaining accurate water parameters in reef systems.