Pay in 4 interest-free payments of $25.00 Learn more
Ships within 48 hours · Estimated delivery Aug 23 - Aug 28
For all granulates from 1
Fast Setup
5mm Disc sinking
UPC (-) For aquariums of about
It is fully equipped
D-D True Seawater Refractometer Leddy For all granulates from 1What is different about the D D Seawater Refractometer? Almost all hand held salt water refractometers available to the hobby are designed and calibrated for the testing of brine solutions, i. e. sodium chloride, and are not calibrated for the refractive index of natural sea water. Even though the largest percentage of salt in the sea is sodium chloride, the presence of other significant ions such as magnesium and calcium in natural sea water results