Hanna Colorimeter test kits

[Frenchie2]

Does anybody have these test kits and where did you get them? What is available besides phosphate & alkalinity kits? Please advise. Thanks much!

[ottoman]

I got my phosphate checker from Oceanic Corals. Cheers.

[Frenchie2]

Thanks Otto. They are out of them right now... but I'll keep my eyes open.

[wayner]

Just got my Hanna Alk Checker from BRS

[amoreira]

goreef.com has them. Only, Phosphate, Phosphorus, Alkalinity and Nitrite are available now. Nitrate is in the works. Magnesium would be possible too, but I don't know if their working on it.

[phi delt reefer]

Magnesium is next in line I believe.

I have read the phosphate meter has some accuracy issues when used for reef testing. A nano-reef member uses the phosphorus meter instead and a mathematical formula to convert the reading to an accurate phosphate reading.

[amoreira]

I have the ULR Phosphorus meter and find it very accurate. I did some experimenting around on it's accuracy. I diluted the water I was testing with P-free seawater and found it gave bang on results.

One thing about the alk-meter I just read is that they had reliability issues with the powder reagents and are replacing them with liquid:

http://reefbuilders.com/2011/01/24/h...placed-liquid/

For alk, Ca and Mg, the ordinary test kits (i.e. Salifert) are accurate enough for my needs.

[Seamazter]

I believe they are now selling the liquid reagents to replace the powders.

[wayner]

Yes, I made sure when I ordered the Alk Kit that it came with the liquid regent