Accurate By Benjamin on 3/19/2015
Benjamin would recommend this product to a friend
Very accurate. Dropper tip on the bottle eliminates having to use a pipet. Enough in the bottle to last a very long time.
Excellent Calibration Fluid By Mr.JD on 3/15/2015
Mr.JD would recommend this product to a friend
Perfect solution for calibration of your Refractometer. Don't make the mistake I did buying the Pinpoint Salinity Calibration Fluid it is for salinity probes not Refractometer. Keep the fluid stored in a cool place you don't want any evaporated fluid.
Don't test without it By Jeff on 3/12/2015
Jeff would recommend this product to a friend
I use this solution weekly to keep my refractometer and probes calibrated. Peace of mind that my readings are true and I will not test without it. Good stuff!
Good Idea for Refractometer precision By Matt on 3/12/2015
Matt would recommend this product to a friend
My new refractometer was off 3 points using RO water to calibrate. Now I know it's on with this calibration solution.
Simple to use and should last for a very long time. By Scott on 3/4/2015
Scott would recommend this product to a friend
Simple to use and should last for a very long time.
Great item. By Michael on 2/9/2015
Michael would recommend this product to a friend
Works spot on.
Simply works By Jesus on 2/3/2015
Jesus would recommend this product to a friend
Easy to use, large quantity, and the drops come out at a very controllable rate. Tested this against multiple calibrated devices including the Milwaukee MA887. All read at 35, so it's pretty dang accurate.
Excellent Product, Excellent Accuracy By AsmoTiC on 1/26/2015
AsmoTiC would recommend this product to a friend
I actually ordered this on accident. I didn't realize the Refractometer was going to come with a bottle of the same stuff, so I ended up with two.
As it turns out, this worked out great. My sality was so far off from the Hydrometer I was using before, I thought something was wrong with the Calibration Fluid that came with the Refractometer. This bottle was a perfect match for the fluid that I calibrated my Refractometer with the first time and gave me piece of mind on the accuracy of both.
Best Price for a bottle that'll last forever By Ryan on 1/15/2015
Ryan would recommend this product to a friend
My refractometer came with enough to calibrate it once. This will last forever and I'll know my salinity is perfect.
Small investment saves your peace of mind By Martin on 12/15/2014
Martin would recommend this product to a friend
If you have a refractometer, don't hesitate in buying this. I have two and they both read 35 ppm as advertised. Don't use RO/DI...I tested and calibrated my refractometer with RO and found that at about 35 ppm my refractometer was reading out by 3 ppm. With this calibration fluid I know I'm reading my salinty accurately at the range it needs to be accurate.
BOTTLE SHOULD LAST YOU A LONG TIME By Mark on 11/18/2014
Mark would recommend this product to a friend
I like the fact that it has a build in dropper. My refractometer came with a small vial of calibration fluid but no dropper! I have to use my dropper for doing other water tests so always making sure it was completely clean of any old saltwater just added another step to my calibrations. Plus if you're using two drops or so to calibrate this should last you a long time. The bottle was much bigger than I was expecting.
Good Value By Mario on 10/14/2014
Mario would recommend this product to a friend
The calibration fluid is easy to use and works as advertised.
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.