Hanna Phosphate ULR blinking 0.00

[chadfish]

Hi all,

Does anyone know what it means when the ULR Phosphate checker blinks 0.00? I’ve had a zero reading before, but never blinking.

 

[w8lifts]

Under Range: A blinking “0.00” indicates that the sample absorbs less light than the zero reference. Check the measurement procedure and make sure to use the same cuvette for reference (zero) and measurement.

 

[chadfish]

Odd. Tried it twice, same procedure with the same cuvette. I guess I’ll try once more after I feed some frozen foods

 

[w8lifts]

Odd. Tried it twice, same procedure with the same cuvette. I guess I’ll try once more after I feed some frozen foods

I had same issue, I just had to start dosing phosphate, I treated it as 0 and started my dosing pump. Issue went away and now keep my phosphate .05-.2 range

 

[Screwgunner]

I had the same thing happen the regent was bad.

 

[Screwgunner]

Lot # 169

 

[EricR]

FWIW -- my first Hanna Phosphate ULR checker was defective -- always read 0.00-0.01 ... Hanna support was awesome, sending me new reagents (free) for diagnostic purposes.

My new checker is always 0.01-0.02 lower than my LFS Milwaukee (but I trust my methods over stressed out dude at LFS)

Bad reagent is always the most likely suspect but never seen blinking "below sample" on mine.
*I'll assume you've tried multiple times with same results ... noting that the photoelectric beam/eye are about 2/3 the way up, on the side, so that part has to be "clear path" ,,, meaning "clean" on the vile

 

[Dan_P]

Hi all,

Does anyone know what it means when the ULR Phosphate checker blinks 0.00? I’ve had a zero reading before, but never blinking.

Not sure what that means. Could be a malfunctioning Checker. Contact Hanna support. I have had good luck with them