The concentration of the triple standard was very high.  Therefore to find its concentration, we had to dilute the standard gas, measure the concentration of the diluted gas, and then account for the dilution step. First, we accurately measured the…

Read more →

We diffused the standard gas through agar gel rather than water.  Agar gel provides support for the water barrier without strongly influencing diffusion through it.  The effects of diffusing gas through agar rather than water are well documented.  We decided…

Read more →