Alk Reagent drift?

GaZZaW

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Hello,

I have a question about the Hanna Alk reagent.
I test Alk once or twice a week so a reagent lasts about 15 to 20 weeks.
I have noticed with the last 3 bottles of reagent that at the last 5ml or so that the readings have drifted down by about 1.5 dkh
A new reagent bottle shows the "correct"reading
any ideas wht this is happening.?
I have been using the hanna alk tester for years now without a problem until now.
 

Scdell

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Yep! More and more people complaining about this.I posted about this 4-5 months ago and all I got told was I was using the tester wrong. User error. Hmmmm.
 

scardall

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Hello,

I have a question about the Hanna Alk reagent.
I test Alk once or twice a week so a reagent lasts about 15 to 20 weeks.
I have noticed with the last 3 bottles of reagent that at the last 5ml or so that the readings have drifted down by about 1.5 dkh
A new reagent bottle shows the "correct"reading
any ideas wht this is happening.?
I have been using the hanna alk tester for years now without a problem until now.
Air/moisture in time will cause your readings to be off. use a stds. kit to verify. Hanna std. kit for alk.
 

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