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Water testing

Post by alank on Fri Aug 12, 2011 7:41 pm

With MG & F in the pond, can I expect "dodgy" readings on my Exact Micro 7+ digital meter?

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Re: Water testing

Post by Admin on Fri Aug 12, 2011 9:13 pm

alank wrote:With MG & F in the pond, can I expect "dodgy" readings on my Exact Micro 7+ digital meter?

MG&F binds Ammonia so it will not Matter Alan ... And can test as Ammonia on test kits.

Only one brand of test kit claims to read accurately when a binder is present and this is the seachem Ammonia test > http://www.seachem.com/Products/product_pages/MT_Ammonia.html

I used to keep an `Alert` card in situ prior to purchasing the Sensafe but would not fret in your case as your Ammonia will remain bound throughout the treatment period.


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Re: Water testing

Post by Admin on Tue Aug 16, 2011 8:04 pm

Tis the `Formalin`content (we all know) of FMG which binds any Ammonia.

Test Kits as mentioned in the Seachem link rely upon increasing the PH up to as high as 12 ( Nessler method ) which then causes the `Aldehyde` type binders to fail releasing the Bound Ammonia and it is this that skews the test kit value.

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Micro 7+ Ammonia performance in presence of Aldehyde Binders

Post by aroberts on Sat Aug 27, 2011 7:03 am

Greetings all,

i have received this response from our head of R&D:

"Today we have carried experiments to see the effect of aldehyde on ammonia detection. We have formaldehyde solution in stock and carried experiments.

I have not observed any interference from formaldehyde up to 2.5 ppm. The negative interference was observed up to 8.5 ppm of formaldehyde and the interference varies from 10 to 20% and beyond 8.5 ppm the interference was serious."

I do hope this helps, please feel free to reply with any questions you might have.

Best Regards,

Andrew Roberts


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Re: Water testing

Post by Admin on Sat Aug 27, 2011 7:55 am

aroberts wrote:Greetings all,

i have received this response from our head of R&D:

"Today we have carried experiments to see the effect of aldehyde on ammonia detection. We have formaldehyde solution in stock and carried experiments.

I have not observed any interference from formaldehyde up to 2.5 ppm. The negative interference was observed up to 8.5 ppm of formaldehyde and the interference varies from 10 to 20% and beyond 8.5 ppm the interference was serious."

I do hope this helps, please feel free to reply with any questions you might have.

Best Regards,

Andrew Roberts


Many Thank`s Andrew to both you and your R&D team re testing following my Query ... We are extremely grateful for this input Very Happy

A single dose treatment of Formalin comprises 12.5-15 ppm which would seriously interfere with the Ammonia test kit reagent accuracy as documented in these results.


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Re: Water testing

Post by Admin on Tue Sep 13, 2011 2:30 am

aroberts wrote:Greetings all,

i have received this response from our head of R&D:

"Today we have carried experiments to see the effect of aldehyde on ammonia detection. We have formaldehyde solution in stock and carried experiments.

I have not observed any interference from formaldehyde up to 2.5 ppm. The negative interference was observed up to 8.5 ppm of formaldehyde and the interference varies from 10 to 20% and beyond 8.5 ppm the interference was serious."

I do hope this helps, please feel free to reply with any questions you might have.

Best Regards,

Andrew Roberts


Hi Andrew ...

My Ammonia reagent test strips expire this month but are still reading perfectly accurately ... out of interest ? is the expiry date finite ? ie will they continue to measure values correctly for a period of time post that ?

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Re: Water testing

Post by alank on Tue Sep 13, 2011 6:39 pm

I am still using my nitrate test strips which ran out in April 2011. I have some old NO4 strips which are falling apart so I would not use them.

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Re: Water testing

Post by aroberts on Wed Sep 28, 2011 11:23 pm

Hello,

Our strips' shelf life is based upon both real time and accelerated environmental stress studies that take into account the variables these strips might go through (example would be how well kept the strips are when ti comes to sun/moisture exposure, proper handling, etc.) and although the strips might still be reading just fine, we do not guarantee results derived from our products past expiry date.


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Re: Water testing

Post by Admin on Wed Sep 28, 2011 11:28 pm

aroberts wrote:Hello,

Our strips' shelf life is based upon both real time and accelerated environmental stress studies that take into account the variables these strips might go through (example would be how well kept the strips are when ti comes to sun/moisture exposure, proper handling, etc.) and although the strips might still be reading just fine, we do not guarantee results derived from our products past expiry date.


Many Thank`s for clarifying that Andrew.

Mine don`t expire until the end of September and have been kept tightly sealed in a box in a cupboard.

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Re: Water testing

Post by aroberts on Wed Sep 28, 2011 11:41 pm

You are most welcome, also the expiry date on the cap is for the end of whichever month is listed (9/2012 = 30th September, 2012)

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Re: Water testing

Post by alank on Thu Oct 13, 2011 3:50 am

Hi Andrew, is there an easy way to order replacement strips online from UK. I can only find supplied=s from USA. I normally order by phone but it is not always convenient to do this.

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Re: Water testing

Post by Admin on Fri Oct 14, 2011 9:36 am

The Sensafe Europe Website ordering of `reagents`facility is down for the foreseeable Alan whilst restructuring I`m led to believe ?

Continue ordering by phone .. which is what I will do too for the time being Sweetie ...

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A Pioneering Approach ?

Post by Admin on Sat Mar 30, 2013 8:45 am

To ALL Things `Phishkeeping`.. I, have come to believe, since this Forum`s `Inception` is that Copious FRESH WATER/LOTS-OF-AIR, along with MINIMAL Handling/Interference ... regardless of the latest Gadgetry/Filter Technology etc .. unless You LOoooooVE spending MONEY on such, whilst TESTING-THE-WATER-TOO-DEATH to a Paranoid degree Very Happy floats-your-boat ...


TO Summarize Wink

HAPPY KOI-KEEPER equates to or = HAPPY KOI ...

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