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by fog
Mon Feb 25, 2019 7:57 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Murat Aydin
Replies: 631
Views: 165933

Re: Murat Aydin

First: Measurement range is not problem. The problem is the resolution. it should be at least 0.1 ppm. Second: There is NOT a mathematical cut off value to diagnose halitosis. Halitometers does not detect halitosis, but detects gases. Third: The H2S is not the unique gas of halitosis. There are mor...
by fog
Mon Feb 25, 2019 7:50 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Re: Building a halitometer

Looks like there is one meter with one decimal precision. for around 130 pounds I will post the link, I think it is obvious Im not maiking any money on these links. https://www.amazon.co.uk/Hydrogen-Professional-Explosion-Adjustable-Vibration/dp/B07GF7XK2D/ref=sr_1_7?ie=UTF8&qid=1551123462&s...
by fog
Mon Feb 25, 2019 7:20 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Re: Building a halitometer

Figaro sensor 1-30ppm
http://www.figarosensor.com/products/entry/tgs2602.html
cheapest one I think at 5 USD on aliexpress (sensor only).

H2S-B4 sensor (capable of PPB levels)
http://www.alphasense.com/index.php/pro ... lfide-air/
Expensie at 155 USD on aliexpress (sensor only).
by fog
Mon Feb 25, 2019 7:10 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Re: Building a halitometer

I think it is safe to say humans max out below 5ppm.
0.13 Minimal perceptible odor.
4.60 Easily detected, moderate odor. #this is in reference to some industry, probably petrolium, so not the words of a doctor
10 Beginning eye irritation. #sounds like superhuman levels
by fog
Mon Feb 25, 2019 7:02 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Re: Building a halitometer

Iam going to try this its around 120eu to see if it gives me some sort of reading,iam making people sneeze and cough,in aircraft,shops,bars,just walking in the park so i think i have strong level,people are getting a tickly cough reaction and 3-6 sneezes not together one or the other,not everybody ...
by fog
Mon Feb 25, 2019 6:55 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Re: Building a halitometer

Maybe there is hope for a less expensive sensor, i found this: Effects of Various H2S Levels Hydrogen Sulfide Level in PPM Resulting Conditions on Humans 0.13 Minimal perceptible odor. 4.60 Easily detected, moderate odor. 10 Beginning eye irritation. 27 Strong, unpleasant odor, but not intolerable. ...
by fog
Mon Feb 25, 2019 6:29 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Re: Building a halitometer

Hum.. i have tried to figgure out the sensitivity needed for the sensor. The one I mentioned called MQ136, has a sensitivity of 0-100ppm Harmful dose of the gas is around 1-50ppm. I belive the meter needs sensitivity of ppb(parts per billion) possibly. As i seriously doubt a human can manage anythin...
by fog
Mon Feb 25, 2019 5:56 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Murat Aydin
Replies: 631
Views: 165933

Re: Murat Aydin

aydinmur wrote: Sun Feb 24, 2019 1:15 pm -Murat
Any idea how much measuring range PPM (parts per million?) the halimeter needs?

I can find h2s meters with sensitivity measuring range from 0-200ppm for the least expensive.

But maybe the sensor needs to be sensitive to measure PPB (parts per billion)?
by fog
Mon Feb 25, 2019 4:26 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Re: Building a halitometer

It may not be worth building one yourself unless you are interested in the learning process. It is a lot more convenient and just a little more expensive to get a ready-built one. You mean like a hydrogen sulfide gas leak detector? Sadly I guess that is what we become, hydrogen sulfide gas leakers ...
by fog
Mon Feb 25, 2019 1:47 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Murat Aydin
Replies: 631
Views: 165933

Re: Murat Aydin

aydinmur wrote: Sun Feb 24, 2019 1:15 pm -Murat
winter wrote: Wed Feb 13, 2019 3:43 pm I might try to build one myself.
Great, I made a thread here viewtopic.php?f=1&t=7405
To gather the information needed to build one.
by fog
Mon Feb 25, 2019 1:45 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: Building a halitometer
Replies: 22
Views: 2380

Building a halitometer

BB is hard to pinpoint, tainted with phobia and guesswork. Many dont have or dread asking someone else about the smell, and if we do can we trust what they say? We need a something more objective, a machine that gives us a number. This would be a huge help to find what works when we try all the &quo...
by fog
Sun Feb 24, 2019 12:00 am
Forum: GENERAL ABOUT BAD BREATH
Topic: Murat Aydin
Replies: 631
Views: 165933

Re: Murat Aydin

http://drmurataydin.com/arsiv//halit3o.jpg http://drmurataydin.com/arsiv//halit3m.jpg http://drmurataydin.com/arsiv//halit3p.jpg Blue circle gas sensor. Red is voltmeter on the front panel. It works fine with 741 op amp. Hope helps. -M Images are not working. It would be very helpful to be able to ...
by fog
Sat Feb 23, 2019 10:47 pm
Forum: GENERAL ABOUT BAD BREATH
Topic: I leave a gift to all of you, a very simple way to end halitosis
Replies: 306
Views: 52862

Re: I leave a gift to all of you, a very simple way to end halitosis

... You are bound to get some hate, some ppl dont realize that there a different types of bad breath. And the whole thing does sound silly. I mean air does somehow go past the tongue for everybody unless you are dead. But at the same time maybe we are doing something unusual tensing up the muscles ...
by fog
Sun Oct 07, 2018 9:25 am
Forum: GENERAL ABOUT BAD BREATH
Topic: Gut microbiome remains hottest health trend three years in a row
Replies: 12
Views: 2200

Re: Gut microbiome remains hottest health trend three years in a row

Watched a program where they talked about poop-pills. The seller got about 35 usd for one poop. The poop is then mixed with saltwater and a preservative. Then they fill capsules with the liquidpoop and freeze them. The patient was having stool problem after eating antibiotics. The goal was to reduce...
by fog
Sun Oct 07, 2018 8:55 am
Forum: GENERAL ABOUT BAD BREATH
Topic: I leave a gift to all of you, a very simple way to end halitosis
Replies: 306
Views: 52862

Re: I leave a gift to all of you, a very simple way to end halitosis

Hello Raymond I have some questions. For how long have you been doing this breathing technique? Did you have someone to evaluate your breath BEFORE you started this way of breathing? If you touch as far back on your tounge as possible, can you describe the smell? I thank you for your efforts to shar...