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Good Probe, Needs Better Clarification By Steven on 3/7/2017Steven would recommend this product to a friendGood probe, but I've seen some struggling with what unit they're calibrating the unit in. The operation range for probe per the factory sheet is 0-50ppt (parts per thousand), thus the numeric value you're reading on the display is displayed in ppt. At 77F a widely used calibration solution produced by Neptune is 53.0 mS/cm, which is 34.952ppt, with a specific gravity of 1.0263. So your first calibration point is in dry air with a ppt value of 000.0. The second however, should be set to 034.9 for ppt. Once the data stabilizes for each, which should be pretty quick, you save it and you're all set. So I hope that clears it up for everyone! Thanks for the video and happy reefing!
Waste of money By Misterkind on 12/2/2016Misterkind wouldn't recommend this product to a friendI bought this probe along with the vl2 module for over $200. This piece of junk didn't come with any instructions. Also, nothing to indicate that the probe is very fragile, which it apparently is. I didn't bang it around or anything, but didn't handle it with extreme caution either. After hours of research, I learned to calibrate this probe, only to watch it fail time and time again. Won't give you an accurate reading from the second you calibrate it. Then the reading steadily rises. This equipment is worthless, and quite expensive.
Probe works By Justin on 9/4/2016Justin would recommend this product to a friendProbe works well, and calibrates easy, but don't try to calibrate a refractometer using the salinity probe calibration fluid, it was about 10 ppt off for me