Wanted to see how many ppl here

coral_lagoon · 09/23/2009, 01:59 AM

Uses RO/DI water to calibrate their refractometers.
Thanks..

rbnice1 · 09/23/2009, 02:13 AM

From what I have read that is a bad thing to do.

It makes 1.025 water read 1.022.

Johnny C · 09/23/2009, 03:38 AM

I did...

Mark426 · 09/23/2009, 04:41 AM

Its not the best way, but sure better than nothing.

gjk · 09/23/2009, 05:00 AM

I get a lower reading consistently when I use R/O to calibrate. About -2.

Sugar Magnolia · 09/23/2009, 06:21 AM

I used Randy H-F's homemade calibration fluid. http://www.reefkeeping.com/issues/2004-06/rhf/index.php

Shane Hoffman · 09/23/2009, 06:26 AM

I use calibrated solution from BRS. RO water leads to somewhat close but inaccurate results.

SNAKEMANVET · 09/23/2009, 06:27 AM

I use calibrated solution also.

Jaycen B. · 09/23/2009, 06:28 AM

I use American Marine Pinpoint salinity monitor 53.0 mS calibration fluid it has the same refractive index as NSW. Here is a good read, Reefkeeping.com/issues/2006-12/rhf/index.php

Jaycen B. · 09/23/2009, 06:30 AM

to slow!

dwd5813 · 09/23/2009, 07:14 AM

i use the pinpoint solution based on reading randy's article as well.

Electrobes · 09/23/2009, 08:03 AM

Quote:

Originally posted by Sugar Magnolia
I used Randy H-F's homemade calibration fluid. http://www.reefkeeping.com/issues/2004-06/rhf/index.php

+1 Easy to make, easy to use.

tydtran · 09/23/2009, 08:28 AM

The point of calibration is you have to know exactly what your solution consists of. RO/DI water doesn't fit the bill.

tedmc2 · 09/23/2009, 08:33 AM

American Marine Pinpoint salinity calibration fluid

lucas73 · 09/23/2009, 08:35 AM

American Marine Calibration Fluid
http://www.drsfostersmith.com/produc...m?pcatid=18718

Playa-1 · 09/23/2009, 09:50 AM

Calibration fluid here.

coral_lagoon · 09/23/2009, 10:26 AM

I also just use RO/DI water, but on the last 4 water changes. Ive been doing some comparisons with RO/DI water and calibration fluid (pinpoint) from BRS. My results were identical..

Tswifty · 09/23/2009, 04:26 PM

Pinpoint Calibration fluid... re-calibrated once per month.

reefergeorge · 09/23/2009, 05:31 PM

rodi

Stanley-Reefer · 09/23/2009, 06:23 PM

same here lagoon ro/di same as calibration. My RO/DI reads O.

kingsland · 09/23/2009, 06:34 PM

Pinpoint calibration solution

graha321 · 09/23/2009, 07:04 PM

Calibration solution that came with the refractometer, not sure what brand.

Salamander · 09/23/2009, 07:58 PM

Pinpoint solution for me. Tried distilled and RO/DI and they were way off. Made Randy's DIY Solution and it was close but without a scientific balance its near impossible to get exact.

Funny thing is when my club had a testing party with all our refractometers, hydrometers etc.....all of our glass float (bobber style) hydrometers were accurate. Not what we expected.

jenglish · 09/23/2009, 08:08 PM

Glass floats are pretty darn accurate.

I have calibration solution but it is .01 +/- calibration for 0.... so it is not super accurate either.

lougotzz · 09/23/2009, 09:37 PM

My calibration fluid and my RODI water read the same thing. So I guess you can say I use RODI water. I wont be replenshing calibration fluid when its gone. Both liquids made my refracto meter .002 higher then 0

09/23/2009, 01:59 AM	#1
coral_lagoon Pushrod Powered Join Date: Jan 2007 Location: Down The Corkscrew , CA Posts: 1,263	Wanted to see how many ppl here Uses RO/DI water to calibrate their refractometers. Thanks..

09/23/2009, 03:38 AM	#3
Johnny C Registered Member Join Date: Aug 2008 Location: Buffalo, NY Posts: 4,140	I did... __________________ "...the sea, once it casts its spell, holds one in its net of wonders forever" -Jacques Cousteau

09/23/2009, 06:21 AM	#6
Sugar Magnolia Registered Member Join Date: Feb 2003 Location: Northern VA Posts: 17,691	I used Randy H-F's homemade calibration fluid. http://www.reefkeeping.com/issues/2004-06/rhf/index.php __________________ Adrienne The only thing to fear is fear itself....and spiders.

09/23/2009, 06:26 AM	#7
Shane Hoffman Registered Member Join Date: Mar 2009 Location: 45 mins from Chicago Posts: 2,009	I use calibrated solution from BRS. RO water leads to somewhat close but inaccurate results. __________________ A wise man once said "Never play leap frog with a unicorn" Current Tank Info: 150 gallon glass with 20 gallon sump, 175lbs of coraline covered live rock, EuroReef skimmer rated for 250gal, 25watt Aqua UV sterilizer, Fluval FX5, Hamilton 3x250watt MH, 160 watt Blue actinic....Mixed reef

09/23/2009, 07:14 AM	#11
dwd5813 Registered Member Join Date: Oct 2005 Location: 813 Posts: 2,827	i use the pinpoint solution based on reading randy's article as well. __________________ order some golf shoes, otherwise we'll never get out of this place alive. what can i say? in dog beers, i have only had one. - dublo8 Current Tank Info: 40B aiptasia farm

09/23/2009, 02:13 AM	#2
rbnice1 Moved On Join Date: May 2008 Location: Cedar Hill Posts: 3,905	From what I have read that is a bad thing to do. It makes 1.025 water read 1.022.

09/23/2009, 04:41 AM	#4
Mark426 Registered Member Join Date: Dec 2005 Location: South Carolina Posts: 2,479	Its not the best way, but sure better than nothing.

09/23/2009, 05:00 AM	#5
gjk Registered Member Join Date: Sep 2008 Location: Daphne, AL Posts: 185	I get a lower reading consistently when I use R/O to calibrate. About -2.

09/23/2009, 06:27 AM	#8
SNAKEMANVET PREMIUM MEMBER Join Date: Jul 2005 Location: TRENTON Tn Posts: 4,486	I use calibrated solution also.

09/23/2009, 06:28 AM	#9
Jaycen B. Registered Member Join Date: Aug 2009 Location: GA Posts: 265	I use American Marine Pinpoint salinity monitor 53.0 mS calibration fluid it has the same refractive index as NSW. Here is a good read, Reefkeeping.com/issues/2006-12/rhf/index.php

09/23/2009, 06:30 AM	#10
Jaycen B. Registered Member Join Date: Aug 2009 Location: GA Posts: 265	to slow!

09/23/2009, 08:28 AM	#13
tydtran Registered Member Join Date: Aug 2007 Location: New Jersey Posts: 853	The point of calibration is you have to know exactly what your solution consists of. RO/DI water doesn't fit the bill.

09/23/2009, 08:33 AM	#14
tedmc2 Registered Member Join Date: Feb 2004 Location: Massachusetts Posts: 384	American Marine Pinpoint salinity calibration fluid __________________ In a world gone mad, only a lunatic’s truly insane - Homer Simpson Current Tank Info: 18" cube, 12" cube, ADA MINI-S

09/23/2009, 08:35 AM	#15
lucas73 Registered Member Join Date: Aug 2008 Posts: 542	American Marine Calibration Fluid http://www.drsfostersmith.com/produc...m?pcatid=18718

09/23/2009, 09:50 AM	#16
Playa-1 Moved On Join Date: Jun 2007 Location: Laguna Niguel, CA Posts: 7,497	Calibration fluid here.

09/23/2009, 10:26 AM	#17
coral_lagoon Pushrod Powered Join Date: Jan 2007 Location: Down The Corkscrew , CA Posts: 1,263	I also just use RO/DI water, but on the last 4 water changes. Ive been doing some comparisons with RO/DI water and calibration fluid (pinpoint) from BRS. My results were identical..

09/23/2009, 04:26 PM	#18
Tswifty Registered Member Join Date: Sep 2007 Location: PA Posts: 14,022	Pinpoint Calibration fluid... re-calibrated once per month. __________________ "Enough light? Heck I could go barebottom and grow SPS in the stand!" - DiscoReefRover

09/23/2009, 05:31 PM	#19
reefergeorge Registered Member Join Date: Jun 2006 Location: St Louis MO Posts: 4,222	rodi __________________ $35-50 for a <1" frag of some stupid named thing that came from a colony you bought for $40-60 wholesale and chopped into 20-40 pieces? No thanks. "JasonH" Current Tank Info: 125 aggressive reef, DIY led lighting, swc cone skimmer, 33 gallon sump, posiden Ps3 return.

09/23/2009, 06:23 PM	#20
Stanley-Reefer Registered Member Join Date: Dec 2008 Location: Stanley, NC Posts: 1,933	same here lagoon ro/di same as calibration. My RO/DI reads O.

09/23/2009, 06:34 PM	#21
kingsland Registered Member Join Date: Jun 2004 Location: Wichita, Kansas Posts: 511	Pinpoint calibration solution __________________ bogey Current Tank Info: 220 in wall, 60 frag and 75, Reeflo 250, Vortech 4x, 100 gal sump, MRC CR2

09/23/2009, 07:04 PM	#22
graha321 Registered Member Join Date: Dec 2007 Location: MN Posts: 99	Calibration solution that came with the refractometer, not sure what brand.

09/23/2009, 07:58 PM	#23
Salamander Registered Member Join Date: Jul 2004 Location: Flagstaff, Arizona Posts: 2,103	Pinpoint solution for me. Tried distilled and RO/DI and they were way off. Made Randy's DIY Solution and it was close but without a scientific balance its near impossible to get exact. Funny thing is when my club had a testing party with all our refractometers, hydrometers etc.....all of our glass float (bobber style) hydrometers were accurate. Not what we expected. __________________ I feel more like myself now than I did before. Current Tank Info: 120g mixed reef, 2 x 250W DE MH, 2 x 54w T5, MSX 200 SKimmer, 2 Koralia 4's, 40g fuge/sump, QT

09/23/2009, 08:08 PM	#24
jenglish Marquis de Carabas Join Date: Aug 2008 Location: Evansville, IN Posts: 2,523	Glass floats are pretty darn accurate. I have calibration solution but it is .01 +/- calibration for 0.... so it is not super accurate either. __________________ Jeremy Brown liquor never hurt anybody “Je n'ai pas besoin de cette hypothèse" Pierre-Simon Laplace I should want to cook him a simple meal, but I shouldn't want to cut into him, to tear the flesh, to wear the flesh, to be born unto new worlds where his flesh becomes my key. Current Tank Info: broken and dry

09/23/2009, 09:37 PM	#25
lougotzz Moved On Join Date: Jan 2009 Location: PA Posts: 1,524	My calibration fluid and my RODI water read the same thing. So I guess you can say I use RODI water. I wont be replenshing calibration fluid when its gone. Both liquids made my refracto meter .002 higher then 0