Developer Terms and Conditions › General Discussions › Projects and Ideas › What about Alcohol?
- This topic has 11 replies, 10 voices, and was last updated 6 years, 4 months ago by Paul Hiscoe.
February 2, 2016 at 2:34 pm #2596DshedooParticipant
Can I use this sensor to determine the % alcohol in the drink?
Can I determine the number of ppm in the blood through the skin?
February 2, 2016 at 2:59 pm #2598AyeletKeymaster
- This topic was modified 7 years, 1 month ago by Dshedoo.
Our experiments show that SCiO can detect alcohol levels in drinks with good accuracy. We conducted these tests as part of our feasibility study for future applications we will develop. We are continuing to build these data collections and models to make them available for future use.
Evaluating for other ingredients in the beverage may also be possible, although we have not tried it ourselves. It should be noted that any component in the beverage which is below a concentration of 1% will not be detectable by SCiO. In addition, as SCiO is currently designed for the scanning of solid samples, a liquid sampling accessory (available soon) will be required in order to sample.
Unfortunately your suggestion to scan blood for insights about components found in concentrations of few ppm is not likely to be feasible with SCiO. While we have not tested these thoroughly, we believe that SCiO’s NIR spectroscopy technology is most likely NOT suitable for trace detection of such components due to their low concentrations, which are below SCiO’s range of at least 0.1%.
However, scanning in concentrations above 0.1% with SCiO is generally feasible.
The Consumer Physics TeamMarch 3, 2016 at 7:28 pm #2879LorandParticipant
http://alcosense.co.uk/alcosense-trutouch.html they use similar technic for alcohol detectionMarch 15, 2016 at 11:12 am #firstname.lastname@example.orgKeymaster
Could you tell me when the liquid sample will be available?
TnxMay 10, 2016 at 1:39 pm #3255ngaphan0105Participant
I don’t understand. It means can Scio detect at 1% or 0,1% of concentration?May 10, 2016 at 1:54 pm #3260AyeletKeymaster
The most successful detection threshold is: 0.1%.May 11, 2016 at 12:48 pm #3279ngaphan0105Participant
Thanks a lotMay 13, 2016 at 5:55 pm #3281Omar StradellaKeymaster
Pffttt! AlcoSense TruTouch is just a gimmick. Why would anybody pay 300 pounds/week for it is mind-boggling. Notice that there aren’t any real specs in the website. Ethanol is one of the simplest organic molecules and the NIR spectrum is composed of just overtones and combination bands for only 2 types of bonds, C-H and O-H, which are present in many, many molecules in the human body. I can guarantee that anybody can win a lawsuit against any entity using that device against them.May 13, 2016 at 8:35 pm #3282rejsharpParticipant
So Omar – we can claim a defense that it was just the vinegar on our fish and chips? 🙂
I am eagerly awaiting the liquids scanning aid, so that I can see what discrimination SCiO has between ethanol, methanol, acetic acid, acetone and water.October 7, 2016 at 4:18 pm #43399bernardParticipant
I started yesterday to play with my scio to measure alcohol in wines
first I am using medical alcohol at 90% and made dilutions
using a small polycarnonate cavity sticked on alumnium reflective foil and micropipette to get reproducible thickness I reach for the 0-90% R2 =0.94
which is not too bad ( deviation of 6 % in volume )
for 8% to 33% R2 = 0.89 with about 2 % deviation
each time with only 6 samples repeated 2or 3 times
however we can’t hope a precision better than 1%
now I have to do this with water + sugar ( and then water alcohol and sugar )
problem I see is the shape of the meniscus with different chemical stuff in liquids
so best solution would be liquid between 2 plates but the upper one would absorbe part of the IR but to which extend ?
I don’t hope to measure anything else than sugar and alcool in beverage : the IR range is not large enough to get acids
( malic lactic acetic )
October 10, 2016 at 1:10 pm #43409ulParticipant
- This reply was modified 6 years, 5 months ago by bernard.
Bernard, I would like to recommend a book:
The Handbook of Organic Compounds by Jerry Workman, Jr.
In this book it is clearly stated that (Page 140):
Acetic Acid can be detected at 895 and 995 nm
Lactic Acid can be detected at 925 and 1035 nm
I also built model that measure Ethanol in spirits, range 0-96% with results: R2 = 0.988 | RMSE = 3.409. However I would like to repeat experiment with accessory for liquids.October 25, 2016 at 11:14 am #43449Paul HiscoeParticipant
It works very well.
We’ve now built an ethanol model with R2 = 0.997 | RMSE = 0.642
We’ve tested it extensively and had the results verified by the Public Analyst.
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