Brand new refracto juice BRS not accurate?

[Kershaw]

"This 3.65 weight percent sodium chloride solution can be made by dissolving 3.65 grams of sodium chloride in 96.35 grams (mL) of purified fresh water. "

Doesnt get much simpler, just need accurate measuring instruments.

Awesome thank you.

 

[LadyTang2]

DIY is best, if you have a scale. With commercial products that disagree with one another, it is very hard to tell what is correct.

Reef Aquarium Salinity: Homemade Calibration Standards by Randy Holmes-Farley - Reefkeeping.com

So you just use iodized salt and the second which you just call salt is table salt correct? Is that aka all purpose salt?

 

[Miller535]

I had a bottle of the BRS calibration fluid in the past that was pretty off that I contacted them, and they took the lot number and acknowledged the problem and replaced mine. It does happen..

 

[Miller535]

@Randy Holmes-Farley , is this still the method you are referring to? I am interested in trying this.

http://reefkeeping.com/issues/2004-06/rhf/index.php

 

[Sisterlimonpot]

@Randy Holmes-Farley , is this still the method you are referring to? I am interested in trying this.

http://reefkeeping.com/issues/2004-06/rhf/index.php

Same link from Randy on the 1st page

DIY is best, if you have a scale. With commercial products that disagree with one another, it is very hard to tell what is correct.

Reef Aquarium Salinity: Homemade Calibration Standards by Randy Holmes-Farley - Reefkeeping.com

 

[Randy Holmes-Farley]

So you just use iodized salt and the second which you just call salt is table salt correct? Is that aka all purpose salt?

Iodized or not will not matter. I used Iodized Mortons iodized salt, but any salt will do if you use a scale. If you use a volume measurement of it, it's more important to get the same type so it has the same bulk dry density.

 

[DOJOLOACH]

@Randy Holmes-Farley is there a Barny version of your Article for some of us less educated reefers? I have read allot of the articles on reefkeeping.com. And I do enjoy them but many are way over my head

The sodium chloride is the table salt

 

[Miller535]

Iodized or not will not matter. I used Iodized Mortons iodized salt, but any salt will do if you use a scale. If you use a volume measurement of it, it's more important to get the same type so it has the same bulk dry density.

I am sorry, I am still a little confused. It says use iodized salt of a 1/4 cup, then 1 tsp of salt which you are saying table salt. Isn't Iodized salt table salt?

If so can I dissolve 3.65 grams of table salt into 96.35 grams of water? I have a gram scale

 

[DOJOLOACH]

So you just use iodized salt and the second which you just call salt is table salt correct? Is that aka all purpose salt?

Yes, the basic no thrills salt, not the other stuff like pink salt.

 

[Miller535]

Yes, the basic no thrills salt, not the other stuff like pink salt.

Ok, thank you

 

[Randy Holmes-Farley]

I am sorry, I am still a little confused. It says use iodized salt of a 1/4 cup, then 1 tsp of salt which you are saying table salt. Isn't Iodized salt table salt?

If so can I dissolve 3.65 grams of table salt into 96.35 grams of water? I have a gram scale

Yes, all the same salt.

 

[Randy Holmes-Farley]

FYI, this recipe is just for refractometers. Don't use it for conductivity meters or hydrometers Those have different recipes.

 

[shred5]

Funny thing is, the brs bottle is made by bright well. Not trying to blame brs but I have heard of inconsistencies of these hobby grade calibration fluids

I have allot of bottles from different manufacturers and most are off, I mean I have 1/2 a dozen or more and they all read different from each other.
What helps is shaking the bottle and making sure the water is the proper temp.

I got so tired of it I switched to Hanna tester.

 

[Sisterlimonpot]

Grr! Randy, I can envision you making Mr wizard style low budget videos to pass on your knowledge.

Unfortunately no one wants to read that entire article to get the answers... with the adoption that videos are the preferred way to recieve information i can see you cleaning up with Mr wizard and Bill Nye style videos..

 

[daybreaksky]

I just changed my RO filters and resin. Dialed the refractometer with my bright well solution and then used ro/DI and it read 0. I know RO isn't the best and most reliable but I've done it for a decade before and was never too much off when I took my water to lfs or checked against bottled solution.

 

[Randy Holmes-Farley]

I just changed my RO filters and resin. Dialed the refractometer with my bright well solution and then used ro/DI and it read 0. I know RO isn't the best and most reliable but I've done it for a decade before and was never too much off when I took my water to lfs or checked against bottled solution.

A perfect brine refractometer (if that is what you have, as opposed to a true seawater refractometer) working and calibrated perfectly will ALWAYS read seawater to be higher in salinity than it actually is (misreporting an actual 33.3 ppt to be 35 ppt).

 

[daybreaksky]

Thanks Randy! Mine is labeled as seawater but who knows

 

[CK00020]

OP what did u come up with?

 

[Sprin001]

How do you know which is accurate (if either)?

I check it against the hanna which is calibrated to 35 ppt solution.

 

[Randy Holmes-Farley]

I check it against the hanna which is calibrated to 35 ppt solution.

ok, just don’t assume a refractometer solution at 35 ppt is necessarily 35 ppt on the Hanna.