PH testing, and Alkalinity Questions

[mark]

Originally Posted by ZachAttack

OK, so where can I get a ph monitor??

got mine here off Canreef but JL Aquatics carries different ones.

I'm using Salifert for Alk, no problems and last couple I got had a calibration solution to check against.

[Myka]

For alkalinity I would say Elos is a good kit (or Hanna or LaMotte if you're into spending that kind of money).

For pH I wouldn't bother buying a kit as they are quite inaccurate. A handheld digital pH meter (buy calibration solution too for pH 7 and pH 10) is much more accurate.

I have a Salifert kit for alkalinity and even though it matches the calibration solution they send with the kit the kit reads 2 dKH higher than accurate, my last one was 3 dKH higher than accurate. I won't buy another Salifert kit for alkalinity.

[ZachAttack]

Originally Posted by Myka

For alkalinity I would say Elos is a good kit (or Hanna or LaMotte if you're into spending that kind of money).

For pH I wouldn't bother buying a kit as they are quite inaccurate. A handheld digital pH meter (buy calibration solution too for pH 7 and pH 10) is much more accurate.

I have a Salifert kit for alkalinity and even though it matches the calibration solution they send with the kit the kit reads 2 dKH higher than accurate, my last one was 3 dKH higher than accurate. I won't buy another Salifert kit for alkalinity.

THanks, very helpful. where is a good place to buy the handheld Ph testors??

[mark]

Originally Posted by Myka

I have a Salifert kit for alkalinity and even though it matches the calibration solution they send with the kit the kit reads 2 dKH higher than accurate, my last one was 3 dKH higher than accurate. I won't buy another Salifert kit for alkalinity.

2-3 higher than what if matches cal solution?

[Myka]

You see, I think the calibration solution that comes with the Salifert alkalinity kit isn't accurate. My two Salifert alk kits were tested against Elos and LaMotte. The Elos was accurate to the LaMotte.