Hanna Po4 tester going crazy?

[J Rog]

So I decided to test my Po4 today. First test said 0.17 (i cried a little). Didn't think that was correct because everything is looking pretty good. With the exception of my sps because well they always dont look great.. lol Tested again. Second test said .05 (i was a bit more pleased..). I figured for good measure one more test.. 3rd test said 0.. Im stumped.. Any ideas? I just replaced the battery not to long ago..

 

[MounteeFrag]

Can't you calibrate those?

 

[J Rog]

Nope

 

[MounteeFrag]

I just received mine in the mail. Did my first test, 0.00. Not sure that is correct. Didn't know it only came with so little reagent packets. Ordered more today.

 

[JOSE CASAS]

Just curious which one is it? The hand held or the one that comes in the blue case?

 

[jerseypete]

Had that prob before. My issue was the vials were a little dirty. They looked clean until you looked up close. Cleaned them really good and everything was back to norm.

 

[J Rog]

Just curious which one is it? The hand held or the one that comes in the blue case?

Im pretty sure the Alk test comes is the blue one. This comes in a white case and the tester is green.

 

[J Rog]

Had that prob before. My issue was the vials were a little dirty. They looked clean until you looked up close. Cleaned them really good and everything was back to norm.

Ya, I clean mine before and after every use.. So it should be clean.. But i tested it a fourth time and it came fairly close to my 2nd reading.. So im going with that number.. lol

 

[thanhreef]

So I decided to test my Po4 today. First test said 0.17 (i cried a little). Didn't think that was correct because everything is looking pretty good. With the exception of my sps because well they always dont look great.. lol Tested again. Second test said .05 (i was a bit more pleased..). I figured for good measure one more test.. 3rd test said 0.. Im stumped.. Any ideas? I just replaced the battery not to long ago..

Mine did the same. I test at least 3 & 4 tests.

 

[joekool]

Make sure to get the regents for your particular number tester. They are not all the same. I bought some cheap on amazon.

I test mine twice with the same mix. Make sure you leave no finger prints on it and make sure that it has dissolved and there is no bubbles. Then you should be good. I whip mine with a paper towel and then blow any lint off before putting inside. Also make sure to press and hold for the count down on the second vial.

 

[Spendley]

I use a cloth to wipe fingerprints off of my vials. I also use a filter to get all of the reagent in.

It only comes with a few, so make sure to buy replacement reagent before it's too late.