Wanted to see how many ppl here

[coral_lagoon]

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

 

[rbnice1]

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

It makes 1.025 water read 1.022.

 

[Johnny C]

I did...

 

[Mark426]

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

 

[gjk]

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

 

[Sugar Magnolia]

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

 

[Shane Hoffman]

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

 

[SNAKEMANVET]

I use calibrated solution also.

 

[Jaycen B.]

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.]

to slow!

 

[dwd5813]

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

 

[Electrobes]

<a href=showthread.php?s=&postid=15746722#post15746722 target=_blank>Originally posted</a> 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]

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

 

[tedmc2]

American Marine Pinpoint salinity calibration fluid

 

[lucas73]

American Marine Calibration Fluid
http://www.drsfostersmith.com/product/prod_display.cfm?pcatid=18718

 

[Playa-1]

Calibration fluid here.

 

[coral_lagoon]

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]

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

 

[reefergeorge]

rodi

 

[Stanley-Reefer]

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