Hi
we are already working on this issue, we didn't want to post before we had final results, assumptions don't help anyone.
It seems that there are micro bubbles in the reagent, our manufacturer told us that this can happen after temperature swings of the reagent.
This is very likely in the winter, between storage, transport and your home we have temperature differences of 20°C or more.
These are the planned actions:
1. reagent manufacturer tries to get rid of most of the micro bubbles with heating and shaking the warm liquid before shipping, this will reduce the air about 80%
2. we add a software feature "double-check" (can be disabled): if the KHD measures a suspicious value it does a second measurement, it is very unlikely that a bubble affects 2 measurements in a row
What can you do now?
1. keep the reagent tubes as short and as straight as possible
2. get rid of the micro bubbles: get the liquid a bit warmer than room temp., e.g. get temp. about 30°C on a heater, after that loose the air bubbles by stomping
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