About this item
- Material The sea hydrometer is made of plastic, the structure is sturdy and resistant, not easy to be damaged, and has a long service life.
- Unique Design Transparent design, easy to read accurate measurement readings, please wash with water after each use.
- Precise Our seawater hydrometer has clear scales and small errors, with an accuracy of +(-) 0.002 specific gravity units.
- Tips Please use it at a depth of 6in/15cm to avoid errors caused by inhaling the oil film on the water surface.
- Application Suitable for testing salinity and specific gravity in saltwater and marine aquariums.












Casandra Jenkins –
Simple to use and read. Decent quality. Works well.
Lisandro Hirthe IV –
This works as expected. The numbers are not very dark on the one I got, so it’s not so easy to read. I do know where the needle needs to point to, so it’s easy enough for me to use that I would not need to replace it. I imagine over time, the color will wear off any way.