Hanna ULR Phosphorus tester issues.

Reefin' Alaska · Sep 27, 2020

Aqua Man said:
Also, place the vial in the same orientation every time.
I use a mark on vial and line up with the b in ppb on the front. And everything that living tribunal said too!

Always, I marked it with a sharpee.

living_tribunal · Sep 27, 2020

Kurant said:
Interesting.

When the bottom of the U shape is at the line, it read 43..

Curious.

Not really, that’s because it’s where you’re supposed to fill it!
So, assuming everything else is good, your phosphate levels are .13.

Sleeping Giant · Sep 27, 2020

Here is the conversion chart

Scorpius · Sep 27, 2020

Accuracy and consistency are key in doing this test for consistent results.

SMSREEF · Sep 27, 2020

Kurant said:
Always, I marked it with a sharpee.

Wouldnt a sharpee change the results? Even a scratched cuvette can cause problems.
I think people mean use one of the manufacturers marks like the “10 ml” marking always facing forward. For both C1 and C2.

If cuvettes are scratched up you can get replacements.

are you using the same glass vial for both C1 and C2?

Cell · Sep 27, 2020

A drop or two is not going to make a measurable difference in 10 mL of water.

Reefin' Alaska · Sep 27, 2020

SMSREEF said:
Wouldnt a sharpee change the results? Even a scratched cuvette can cause problems.
I think people mean use one of the manufacturers marks like the “10 ml” marking always facing forward. For both C1 and C2.

If cuvettes are scratched up you can get replacements.

are you using the same glass vial for both C1 and C2?

It's a dot with a fine tip sharpee on the top of the cuvette. I didn't draw a picture on it. Lol. Matter of fact, it's almost rubbed off entirely as it is..

And no, I'm not using the same cuvette for both..