COLLBATH Accurate Automatic Salinimeter Hydrometer for Saltwater Fish Tanks Square Aquarium Gravimeter with Specific Gravity Precision Read Surface Floating Design for Seawater Testing

Salinimeter:keeping your hands clean and can prevent pollution of water from the fish pond,Salt Water gravimeter

Salt water gravimeter:it is easy to read and the precision can be + (-) 0001 units of specific gravity professional design make it able to get accurate reading when the temperature of the fishpond is at -28 degrees,Hydrometer

Hydrometer:15 centimeters (6 inches) from the bottom of the water to avoid the error caused by the oil film on the water,Salt Water gravimeter

Aquarium gravimeter:the proportion of water sample can be automatically detected the proportion, and conductivity of sea water are shown once,Salt Water gravimeter

, both inside and outside the cylinder can be read the hydrometer that can float on the surface of the water is simple and easy to read