Low Range Copper Hanna Checker hint

[Mindi]

I have been getting inconsistent results like...0, 40, 0, 35, etc... and I now know what the explanation is. When I shake the reagent powder vigorously to be sure of dissolving it all, and then knock out any bubbles, and let it stand for the bubbles to float out before final check I get zero.... so it looks like user error. The powdered reagent needs a bit more effort to fully dissolve than some others like ULR Phosphorus..so something to watch out for.

 

[Brew12]

I have been getting inconsistent results like...0, 40, 0, 35, etc... and I now know what the explanation is. When I shake the reagent powder vigorously to be sure of dissolving it all, and then knock out any bubbles, and let it stand for the bubbles to float out before final check I get zero.... so it looks like user error. The powdered reagent needs a bit more effort to fully dissolve than some others like ULR Phosphorus..so something to watch out for.

Thanks for the heads up on this!

 

[Hanna Instruments]

I have been getting inconsistent results like...0, 40, 0, 35, etc... and I now know what the explanation is. When I shake the reagent powder vigorously to be sure of dissolving it all, and then knock out any bubbles, and let it stand for the bubbles to float out before final check I get zero.... so it looks like user error. The powdered reagent needs a bit more effort to fully dissolve than some others like ULR Phosphorus..so something to watch out for.

Are you using this Checker for saltwater or freshwater?

 

[Connor SKKY02]

Could you please confirm if LR works only on freshwater? or it works in saltwater as well? To measure the recommended cupramine level dose of 0.5 mg/L, which one should I use?