- HI98319 Marine Salinity Tester - Hanna Instruments
Designed for Simple Aquarium Salinity Testing
Hanna Instruments HI98319 Marine Salinity Tester measures electrical conductivity (EC) to determine the salinity of natural and artificial seawater. Within seconds, the salinity and temperature are measured, and then using the temperature reading, automatically compensated and displayed on the easy to read LCD screen. Ensuring the proper salinity in your reef tank allows your fish and corals more time to grow instead of having to adjust to constant salinity changes. If you have a hard time seeing the fuzzy blue line common with traditional refractometers, or just want to make your life easier, pick up a Hanna HI98319 Salinity Testing Pen!
- Comes with calibration solutions ensuring proper readings
- Ideal for testing salinity in any aquariums
- Pocket-sized for easy travel
- Graphite sensors reduce polarization effects
- Fast and accurate temperature readings
- Selectable auto-off prolongs battery life
Easily cycle between the three common salinity measurements:
- ppt - parts per thousand
- PSU - practical salinity units
- S.G. - specific gravity
- 0.0 to 70.0 ppt (g/L)
- 0.0 to 70.0 PSU
- 1.000 to 1.041 S.G.
- 0.1 ppt (g/L)
- 0.1 PSU
- ±1 ppt for 0.0 to 40.0 ppt (±2 ppt for readings over 40.0 ppt)
- ±1 PSU for 0.0 to 40.0 PSU (±2 PSU for readings over 40.0 PSU)
- ±0.001 S.G.
Temperature Range - 0.0 to 50.0°C (32.0 to 122.0°F)
Temperature Resolution - 0.1°C (0.1°F)
Temperature Accuracy (@ 25°C/77°F) - ±0.5°C; 1°F
SalinityCalibration - Automatic single point 35.00 ppt
Temperature Compensation - Automatic from 5 to 50.0 ºC
Battery Life - Approximately 100 hours of continuous use
Environment - 0 to 50 °C (32 °C to 122 °F) RH max 100%
1x HI98319 Marine Salinity Tester
1x CR2032 Battery (installed)
1x Storage Case
4x 35ppt Calibration Standard Sachets
1x Instruction Manual
1x Quality Certificate
Consistently low reading despite calibration By Albert on 1/17/2020Albert wouldn't recommend this product to a friendIf this unit is meant only for freshly mixed saltwater and not intended for tank water, it is rather useless. Mine always tested 0.002 lower than the actual salinity. My Milwaukee digital refractometer and reference VeeGee are consistent, leading me to not trust the Hanna.
Nice concept but... By David on 12/6/2019David wouldn't recommend this product to a friendI really love the idea of having a tester that you can just dip in the water and get a good reading. Even when calibrated this checker is reading consistently higher than a calibrated handheld and digital refractometer. It leads me to suspect a bad batch of calibration packets. Hanna has yet (3 days and waiting) to respond to an inquiry about this.
Love it By Tim on 11/26/2019Tim would recommend this product to a friendVery nice tool to have. My salinity was off quite a bit and I think it had something to do with my calibration and temperature. This tool works perfectly and adjusts for temp. Compared to LFS and this thing is dead on. I have been sticking in tank and gives a quick accurate measurement.
Absolutely love it! By Yo Mama on 11/22/2019Yo Mama would recommend this product to a friendWouldn’t know what I did without it for so long! I have not had any problems with it stating calibrated, and will check it to my hydrometer and refractometer once a week or so, and it has always been spot on. And I even use it directly in my tanks. I religiously rinse it in ro water and dry it after each use, maybe that why I have good luck with it. But it’s so nice and convenient to push a button and have readings seconds later!
Accurate and easy to use By Michael on 11/5/2019Michael would recommend this product to a friendThis pointed out to me that my trusty cheap refractometer was not so trusty even when calibrated before every use. This has been dead on compared to a couple of friends devices such as the Milwaukee- it is more accurate too. I was running at 30ppt for a year based on the refractometer but thought I was at 34.
Minus one star for sloppy manufacturing of the device with sanding marks and black smudges as well as my temp probe is way off center. Hanna also doesn't reply to emails.
Quick, simple and accurate By Patrick on 10/21/2019Patrick would recommend this product to a friendI’ve had great luck with this. It’s quick, just as accurate as my refractometer and much easier to use. You do have to calibrate it periodically - the instructions say once a month; I do it about every other month and haven’t had an issue, but my refractometer needs to be calibrated more often than this does.
Wont stay calibrated By Nick on 9/8/2019Nick wouldn't recommend this product to a friendI purchased this item about 6 months ago and was working ok until recently when it wouldnt stay calibrated. Sent back to Hanna and they shipped a new one. Rating is for lack of customer service at all and the fact the product has failed. Read some forums and others are having the same issue and have multiple replacements from Hanna.
HI98319 Marine Salinity Tester By steve on 6/21/2019steve would recommend this product to a friendlove it
good for making fresh salt water By ying on 4/29/2019ying would recommend this product to a friendThis unit works as advertised for me. Gives me instant salinity readings when I am making fresh salt water. The reads seem accurate and consistent (when measured against my refractometer). However, as someone has reviewed before, this meter is only meant for freshly made salt water. If you use it on tank water, it will give very inconsistent (or completely wrong) readings, persumably from dissolved waste interfering with the resistance readings. However, since the only time I ever use salinity checkers is when I'm making fresh salt water, the meter works well for my purposes. If your tank doesn't have an ATO and you need to check tank water salinity, then I would recommend a refractometer instead. But overall a nice niche product that saves me time and effort when I'm change water.
More of a Pain than Helpful Tool By Josh on 4/19/2019Josh wouldn't recommend this product to a friendPerhaps just a bad unit, but accuracy was just never there for me and I was always careful to rinse and clean after every test and calibrate it regularly following every step as carefully as possible. Using my refractometer is just easier and more reliable. I'm past any return window, so I'll have it as an emergency backup I suppose, but I should have either stuck with the refractometer only or paid more for the Milwaukee.
This thing rocks By JeffreyF on 4/10/2019JeffreyF would recommend this product to a friendI just got mine today so I thought I better give it a test run. After setting it up per the instructions that were easy and painless off I went to test my new mixed batch of water. Way fast and even easier to read. I love this because my eyes are not what they use to be so trying to read my refractometer has been getting harder and harder. Would I recommend this? Yes I would.
Accurate and priced right. By Eric on 3/22/2019Eric would recommend this product to a friendThis tester is awesome! With almost instant and very accurate salinity readings, compared to my Red Sea refractometer, and the temp probe is accurate to within a half degree to calibrate your Apex or other controllers temp sensors to also. No more dripping saltwater on the flooring or trying to read a refractometer with my less than perfect eyesight! Calibration was quick and easy after selecting the type of output reading you desire and your good to go. Well done Hanna!
Is this tester accurate enough to test my salt water swimming pool which should be at 3000 PPM?
Thanks for reaching out to us. It would accurately measure from 0-70 ppt (70,000 ppm) and please let us know if you have any further questions. Take care!