Anybody familar with Red Sea Mg Test Kit?

[falconut]

Using this kit, it turns from the redish-pink to dark purple, but it doesn't ever seem to match the bluish color on the card no matter how much more reactant I use. Does anybody know if the test is done as soon as it turns this dark purple or does it actually turn a blue to match the card?

Thanks in advance.

[Pittsburgh]

Here's their video, it should help a lot:

http://www.youtube.com/watch?v=MofaqM-I6uM

[jackde]

Mine turns blue. May take 4 or 5 drops after purple to get a true blue. If you wait to long it will turn back to purple.

[falconut]

That's for the video, I'll have to wait until I get home to watch it. Youtube is blocked at work.

Mine never really seems to turn blue, just darker purple.

[travis32]

Well, is it possible it could just be a color perception / defficiency issue. It occurs much more commonly in males.. If you're male. :) Just a thought.. Not something we think about often... I have a tough time distinguishing yellows from green on the phosphate test. And a tough time distinguishing black from dark purple and dark blue in clothing.

http://en.wikipedia.org/wiki/Color_blindness

[MatthewLaw]

i have the same issue with my mag test. i take notice when it goes to purple and then put a few more drops in, waiting to see if it turns "blue"

[Mekanic]

Mine turns blue. May take 4 or 5 drops after purple to get a true blue. If you wait to long it will turn back to purple.

same with mine

kinda purple > purple > really purple >really really purple > super purple > blue

lol

[falconut]

Well, is it possible it could just be a color perception / defficiency issue. It occurs much more commonly in males.. If you're male. :) Just a thought.. Not something we think about often... I have a tough time distinguishing yellows from green on the phosphate test. And a tough time distinguishing black from dark purple and dark blue in clothing.

http://en.wikipedia.org/wiki/Color_blindness

Yes, I'm male. I believe that is an issue with some of the tests. I've had to ask my wife to check the colors.

[falconut]

Here's their video, it should help a lot:

http://www.youtube.com/watch?v=MofaqM-I6uM

I definitely see it go blue in the video. I'll have to try it again, maybe stiring it quicker will work. Thanks.

[bertoni]

Some kits might require more time for the reaction to complete when the solution turns purple. For the old IO calcium test, for example, I had to wait about a minute after the solution turned purple before continuing the titration to get an accurate result. I haven't used the Red Sea Mg kit, so I don't know whether this applies, though.