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So, our litle project for this Christmas holiday was to make ourselves a DIY gas chromatograph and see if we could use it to detect the difference between CO2 and Methane, which are the two main products I expect to see from the fermentation to produce biogas.Note that when I talked to some chemists about this they advised that I could do this much more easily using wet chemistry because of the significant differences between CO2 and Methane, but I am a physicist, so something using physical properties sounds much more fun!CVs are most commonly used in academia, research and medicine – not to mention for most jobs outside of the United States.While a resume is typically only a page or two in length, a CV is more detailed and therefore longer, often containing more information about academic achievements than a resume.Color intensity can be specified on the interval [0, 1]. A curriculum vitae, commonly known as a CV, is an alternative to writing a resume to apply for a job.

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Unfortunately I was using a 100R resistor to sense the current, and my loop of constantan is only about 1R.You inject the sample gas into the flow at the inlet of the column, and the constituent parts travel through the column at different rates, so the different constituents come out of the column at different times after injection. I decided to go for a web based system, which means that you can use any computer as the user interface, so we need a little web server.Although some people use Arduino's for this, I thought it would be much easier to use a Raspberry Pi.A while ago I started looking at making a biogas generator, but didn't commission it because I had no way of detecting what gases were coming off it.A few weeks ago I was inspired by someone showing that they had made a DIY gas chromatograph, so thought that if I made one, we could do real experiments on biogas production from household waste to see what works best etc.....

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