American Marine PINPOINT Salinity Monitor PINPOINT Salinity Monitor will accurately and immediately measure the amount of salt in any marine or freshwater system. The reading is fully temperature compensated and the conversion chart will precisely show the corresponding density (specific gravity) or % salt (refractometer) values. Every saler aquarist should own this monitor . the accuracy is superb! This monitor is especially useful to determine the low level of salt required for Koi, whether in an aquarium or outdoor pond. Comes complete with meter, probe and calibration fluid.
O**P
Accurate if used with some precautions
I use it regularly to measure salinity in my Reef Tank and when I mix new saltwater. It's especially helpful when mixing new saltwater, since I just add salt until I reach the desired salinity, which is much easier than a refractometer. Generally it is pretty accurate if you make sure to do a few things; 1. Let the sensor be in the water a few minutes before taking a reading, 2. Swish the sensor around a bit (this make a big difference), 3. Only use a fresh battery, not the AC adapter, and make sure to turn it off after every use to save the battery. 4. Carefully calibrate it with the fluid provided.
J**N
Easy to use and calibrate.
Need a 9 volt battery. Also need a fine precision (flat not Phillip) screw driver to calibrate. This is not provided with the purchase.These are sold in precision screwdriver sets easily available. The calibration screw is listed as screw 3 inside the battery holder on the photo in the instructions. Don't mess with screw 4 as this is factory set (glued per instructions to keep from accidentally trying to set). Screws 3,4 are right next two each other with screw 3 further from the edge of the battery box. Instructions are clear. Calibration fluid provided. Up and running in less than 2 minutes. Display stabilizes making reading easy. Conversion table to specific gravity included. Highly recommended.
D**G
Much better than a refractometer or hydrometer!
I love that they include the calibration fluid with this unit. It gives me more confidence in my aquarium's salinity measurements. Initially, I thought i was low in Mg and Calcium but it turned out that my refractometer wasnt accurate. No longer! I can confidently measure no matter the temperature as this is adjusted accordingly. The only reason I didnt give it 5 stars was the fact that I had to calibrate more than once so far.
C**D
they are very stiff and damage easily over time
These work well, however, be careful handling the probe as the cable entering it is rather fragile. I had to replace the last one due to internal wire breakage, they are very stiff and damage easily over time. My last one lasted about 2 years but now that I understand the failure will handle the replacement more delicately
J**B
easy to calibrate
Seems accurate, easy to calibrate.
Trustpilot
1 month ago
3 weeks ago