refractometer cal. fluid

[anthony27]

Well I had a crash and lost the sps in the tank so I have to re start over, my salt want up to 1.040 and the sps melted away.

I need to find the cal. fluid to get the refractometer dead on. Does any one have this.

 

[anthony27]

well i had some of the corals in a back up system that I rember setting up a qt tank from one of the talks but in all crazyness that tank was fine using a hydrometer

 

[Jakef150]

Yikes...sorry..

Get rid of hydrometer!

I uses pinpoint Fluid 35ppm for refractometer with No problem

Jake

 

[WallysWorld]

reefexotics dot com

 

[anthony27]

yeah this is was the killer every summer with out fail

 

[quagmire]

Ant i was looking at a new refractometer at someones house last month and it said in the instructions to use DI water to calibrate it. I double checked it with the solution they supplied and DI water and it was exactly the same. Been using DI water on my refract for years also, seems to work fine. Just make sure your RO/DI unit is putting out clean water first.

 

[outeastreef]

use ro/di water making sure your water is very low tds calibrate to zero, and your good to go. good luck

 

[Editour2]

I have to agree with the RODI water. I was skeptical and purchased solution from country critters however when I compared the 2 (RODI water vs 35 ppm solution) the results were the same.

 

[Beaun]

An issue with using RODI can be a slope miscalibration, which is an error in the refractometer. If you have a slope error in you refract. then using 35ppm solution will always give you an acurate measurement at 35ppm and slightly off at different levels; rather than acurate at 0ppm and more inaccuate the higher you get.

http://reefkeeping.com/issues/2006-12/rhf/index.php#13

 

[anthony27]

wow that is dead on with the facts, thank you all. I just got a bulk reef supply stock in the rodi so I am going to cal from there.

Now you start off at dead zero correct