I own several salinity testers including the Milwaukee MA887, a refractometer, and the Tropic Marin hydrometer. but the one I use the most is the Hanna handheld salinity tester. That being said, there are some improvements I wish Hanna would incorporate in a future model.
(1) Back Lit display. If you are reading your Hanna under your tank lights its no problem but if you are in your garage at night staring into a Brute trashcan, I need a flashlight. A backlit screen would be very welcome.
(2) Move the "CAL" button to a different location on the device. I can't count how many times I turned the device off without thinking but used the "Cal" side of the button when I should have hit the left side of the switch.
(3) Allow changes to specific gravity and temperature without having to take off the back of the unit.
Other than that I am very pleased with the ease of use and relative accuracy. If I need to verify accuracy I use the Tropic Marin Hydrometer but the Hanna is close enough and very convenient.
(1) Back Lit display. If you are reading your Hanna under your tank lights its no problem but if you are in your garage at night staring into a Brute trashcan, I need a flashlight. A backlit screen would be very welcome.
(2) Move the "CAL" button to a different location on the device. I can't count how many times I turned the device off without thinking but used the "Cal" side of the button when I should have hit the left side of the switch.
(3) Allow changes to specific gravity and temperature without having to take off the back of the unit.
Other than that I am very pleased with the ease of use and relative accuracy. If I need to verify accuracy I use the Tropic Marin Hydrometer but the Hanna is close enough and very convenient.
