Great Product By Bryan on 4/24/2014
Bryan would recommend this product to a friend
It's easy to use and very accurate. Does a better job than RODI water.
Recommend By DE on 3/3/2014
DE would recommend this product to a friend
You need to calibrate refractometer with a solution ode to what you are testing.
Piece of mind my settings are correct. By Salty Reefer on 8/28/2013
Salty Reefer would recommend this product to a friend
Excellent product and quantity. I was able to share some with a fellow reefer and still had many calibrations left over.
Must own for Refractometer By BBoyter on 7/18/2013
BBoyter would recommend this product to a friend
Refractometers are great for checking your salinity. But too often people forget to calibrate their instrument. You could be adjusting your salinity based on the wrong readings if you are not checking your equipment. I use it at least once a month. Will last a long time.
It works and provides a high confidence for your readings By Mark on 5/18/2013
Mark would recommend this product to a friend
Based on all of the reading i have done it seems like you will get the most accurate readng using this calibration fluid rather then RODI. I know my measurements appear to be more accurate after calibrations with this fluid.
Fast and easy By Eckolancer on 3/20/2013
Eckolancer would recommend this product to a friend
Great product to use, makes calibrating very fast and easy.
Not something to go cheap on By Dave on 12/21/2012
Dave would recommend this product to a friend
With the amount of money I have in my tank there is no way I would not have a refractometer. That said, without an accurate calibration fluid the refractometer is useless.
This fliud does the job and does it well. This is the second bottle I have re-ordered from BRS and when it runs out, I'll be ordering it again.
This is only optional if you want to do it wrong By Nick on 10/31/2012
Nick would recommend this product to a friend
Marine tanks are too costly to go cheap on the salinity, so having a properly calibrated refractometer is essential. This does the job perfectly, at a very reasonable price. So many people can't be wrong about this... use the calibration fluid!
ezpz By j on 10/9/2012
j would recommend this product to a friend
turns out my calibrating with ro/di had my refractometer off by .002
Calibration fluid was well worth it
On point. By Jocelyn on 7/3/2012
Jocelyn would recommend this product to a friend
This solution is the back bone to keeping my paramount check. 4 stars because I do believe it's a little pricey. Having said that it is a decent sized bottle and the built in dropper is great. I will not have to buy this for a while so that makes up for a dollar or two difference I've seen in lesser quality solutions.
A necessity for just $7 By John on 4/26/2012
John would recommend this product to a friend
This is a great item to keep on hand. Having a refractometer not calibrated correctly can cause major issues. There is enough fluid to last for a very long time. Great product!
must have! By Darrell on 2/5/2012
Darrell would recommend this product to a friend
ok folks, add this to the "must have" list of your tank maintainence and testing supplies! I have always calibrated to 0ppt using ro/di. after getting this calibration fluid I discovered by refractometer was off by 2.5! so, i was actually mixing my salt to 1.023 1/2 instead of 1.026.