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Re: [APD] Pottasium Testing
rlxdn10sity at aol_com wrote:
> I recently purchased a Lamotte Potassium test kit. The directions are somewhat
> ambiguous. It says
> to add reagent and then insert tube until black dot at bottom becomes obscure. I?m not
> sure if
> the tube I received is defective but there is a significant portion of the bottom of
> this tube
> that is black and though its visisbility fades the further into the test solution I
> insert it, it
> never dissapears. I know this could mean that I?m that low on Potassium, but if I
> were?nt, I?m
> not sure at what point the visibility of the black dot would be considered obscure. It
> seems the
> term obscure is left open to the interpretation of each individual. Does anyone have
> with this kit? Any suggestions or tips? I may call Lamotte and ask them but I thought
> to try you
> guys first. Thanks for your help. Chas.
> Aquatic-Plants mailing list
> Aquatic-Plants at actwin_com
No distinction could be seen between the black circle and the white square !
Mine is always at 50 ppm !
The other problem is when you mix some of the white stick to the tube and
gives you a lesser turbidity...
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