Easier to Use Refractometer ?
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LMSC I can’t see the raw data, or sampling method details there, not sure why they tested with sucrose as only the dual scale Atago shows Brix v TDS, the other devices do not display Brix.
Looks a bit confused & sloppy to me.
Why 19 samples on the instant?
Why test 5x R2 but only 1 each of the others?
Not trying to convince you, or anyone else of the usefulness of the R2, A bigger study than my test would be better, but this doesn’t look like it.
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MWJB I generally tend not to judge articles / research that fall outside my area of expertise.
But, my immediate thoughts were notable variations in the outcome between DIfluid devices, yet still showing them on a positive framework, and VST apparently underperforming against home truth.
The data used in research is generally not published IMO. One can contact the authors, should the data be required. Of course, I am no way affiliated to the author. 😁
Your research and tests are not just invaluable to baristas but also completely transparent and unbiased. So,
:-)
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LMSC and VST apparently underperforming against home truth.
There is no ‘home truth’ for the sucrose test, again because sucrose is measured in the Brix scale which is not available for most of the devices shown.
Neither is there ‘home truth’ for the instant coffee because they haven’t carried out any filtration & dehydration to back up the dissolved solids assertion. As I stated, early on, I am not aware of any influencers, commentators nor bloggers who are equipped to make determinations on accuracy compared to a datum/home truth. This is exactly why I avoided discussing accuracy (apart from relative averaged readings vs manufacturer’s own claims).
Bumping this, for access.
One thing I found important for the Di Fluid R2 is to definitely have the samples at room temperature. A good guide as to whether you have not been successful seems to be where the reading continuously drops as it takes samples. I think it’s cooling down when it does this.
Since I definitely cool down to room temp now, the systems 3 readings seem consistent.