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04/14/2008, 08:19 AM | #1 |
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Randy's DIY Refractometer Calibration Fluid - Kosher Salt OK?
I have seen Randy's recipe for calibration fluid for a refractometer in I believe Reefkeeping Mag. In this article he stated he used 6.2g of Morton salt. I have Kosher salt already (not iodized) and would prefer to use this instead of buying more. Any problems with this substitution? Due to crystal size/shape differences, I will measure this in the Materials Lab at work so that the correct weight is used.
Thanks, DW302 |
04/14/2008, 10:18 AM | #2 |
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That will be fine DW, as long as you are going to measure it out as you stated Kosher not only does not contain any Iodine but also none of the Sodium ferrocyanide, which is a free-flow agent. STD lab grade cal solutions use Kosher more or less, pure NaCl.
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If you See Me Running You Better Catch-Up Seawater Chemistry, Geology, ID Marine Life, Collecting Science Books, Explosives Technology, Audiophile An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be. |
04/14/2008, 01:23 PM | #3 |
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Thanks Boomer!
I thought the lack of anti-caking agents and iodine would be better, but was uncertain if Randy accounted for these in his calculations for the proper proportions. DW302 |
04/14/2008, 02:11 PM | #4 |
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No, I did not specifically take them into account.
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Randy Holmes-Farley Current Tank Info: 120 mixed reef |
04/16/2008, 09:56 PM | #5 |
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Randy - The DIY solution worked out fine and it appears is as good as the high dollar stuff we have at work. I cannot mention the company due to internal issues at the moment, but we are a tier 2 automotive company that uses salt spray testing. The guys in the test lab were surprised their "ASTM-certified" calibration fluid read very similiar results as your recipe for the DIY fluid. Cost me $1.69 for the 1L of Diet Dew, purified water = free from the lab, and the kosher salt I had. Not bad for less than $2 and 25 minutes out of my cube dungeon.
Thanks for the article. Frank |
04/16/2008, 10:55 PM | #6 | |
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"If you have more than one tank in your livingroom, you might be a reefneck" Current Tank Info: 180r SoCal Creations, 75g SCC1M Sump, WM EcoBAK, NextReef SMR1, TropicMarin Salt, ACIII, 3x250w HQI Phoenix 14k, 2x140w Super Actinics, ATi BM250, Eheim 1262, Tunze 2x6100+7095, Tunze Osmolator, 6 stage RODI w/ Spectrapure MaxCap |
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04/16/2008, 11:32 PM | #7 |
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Volume yes Doug but not weight Justy take some to the drug store and have them make-up a 3.65 % solution.
963.5 mL RO/DI and 36.5 grams of Kosher Then cal the refract to read 35 ppt or 1.0264 with this solution. Or just go buy some Pinpiont 53 mS and the same, cal to read 1.0264 or 35 ppt
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If you See Me Running You Better Catch-Up Seawater Chemistry, Geology, ID Marine Life, Collecting Science Books, Explosives Technology, Audiophile An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be. |
10/22/2017, 12:19 AM | #8 |
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I work at a clinic with its own lab and could have them weigh out the salt for me. Anyone have the link to Randy's recipe?
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Cheree "Inside of me there are 2 dogs. 1 of the dogs is mean & evil. The other is good. The mean dog fights the good dog all the time." "Which dog wins?" "The one I feed the most." Native Amer Current Tank Info: Have had several- nano, 25, 65 & 75. Currently have Evo 13.5 and 40B, both mixed reefs. |
10/22/2017, 12:02 PM | #9 | |
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Quote:
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Gary 180 gallon, 40 gallon sump, 3 250 W MH + 4 80W ATI T5's, MTC MVX 36 Skimmer, Apex controller Aquamaxx T-3 CaRx Current Tank Info: A 2 Barred Rabbitfish, Red Head Salon, Yellow/Purple, McMaster Fairy, Possum, 2 Leopard Wrasses, Kole, & Atlantic Blue Tangs, 2 Percula Clown, 3 PJ and 1 Banggai Cardinalfish , Swallowtail, Bellus and Coral Beauty Angels |
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10/22/2017, 03:12 PM | #10 |
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This recipe is from Millero:
http://reefkeeping.com/issues/2005-11/rhf/index.php#21 It should be fine.
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Jonathan Bertoni |
10/22/2017, 06:48 PM | #11 |
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Thank you!
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Cheree "Inside of me there are 2 dogs. 1 of the dogs is mean & evil. The other is good. The mean dog fights the good dog all the time." "Which dog wins?" "The one I feed the most." Native Amer Current Tank Info: Have had several- nano, 25, 65 & 75. Currently have Evo 13.5 and 40B, both mixed reefs. |
10/22/2017, 09:55 PM | #12 |
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You're welcome!
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Jonathan Bertoni |
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