Deonised Water For Refractometer Calibration?

[simonas]

my TMC new refractometer needs deionised water for calibration, am i right in thinking that boiled water thatscooled is the same.?

 

[seffieuk]

Nope - its water that has had most of its impurities removed through distillation.

I used distilled water to do mine

Seffie x

 

[Morri]

Nope boiled will still contain some elements I just picked up some battery water from the local garage a couple of P

 

[simonas]

cheers I shall get some of that tomorrow, I only thought that as I know people who have used boiled water in car batteries!!

 

[andywg]

It is worth noting that RC found in tests that hobby refractometers are not too accurate when calibrated to pure water. Far better to calibrate to a known salinity solution.

 

[simonas]

de-ionised water from wilkos today only 52p!!! the cheapest thing I have had to buy so far!!!

I only need three drops as well!!! lol

 

[DarrenUnwin]

Is water from a room de humidifier also the same. If so I have it for free.

 

[bae1994]

It is worth noting that RC found in tests that hobby refractometers are not too accurate when calibrated to pure water. Far better to calibrate to a known salinity solution.

yeah but to do that wouldnt you need to go to the lfs (but i think most use normal refractometers)


or use a hydrometer thus making it the same accuracy as the hydrometer

not trying to be rude as i may have and probably have missed something

 

[seffieuk]

Unless lab quality, Hydrometers are not accurate enough!

However, i agree with Andywg, the best way to go is by calibrating with a known SG water sample. But Distilled will be fine Simon it's the way most of us do it

Seffie x

 

[simonas]

realised it was deionised I bought and the instrictions said distilled!! I;'ll try and find some distilled tomorrow

will this have effected my calibration do you think, tried my salt mix that i got from the LFS and it was 1.021??? I;ll check it again tomorrow

will the low salinity effect ,y live rocks health?

 

[sorgan]

Many lfs run on low salinity to prevent parasites.

 

[seffieuk]

As Sorgan said, most LFs run at below 1.022 - thats why we have to be so careful when acclimatising

Seffie x

 

[simonas]

As Sorgan said, most LFs run at below 1.022 - thats why we have to be so careful when acclimatising

Seffie x

so it may be worth investing in some salt then to bring levels up? or is 1.022 fine for a marine set up. I have read a bit about this and I get the impression that for xenia and toadstools that a higher salinity of 1.026 would be more suitable?

cheers Simon

 

[Morri]

I would invest in some salt and slowly bring it up to 1026 use a good salt like D&D H2 Ocean (tis what I use) if your shop is selling salted water at that low SG I would be tempted to mix your own