Sample Collection for electronic CO2 removal measurements

David Wilson is attempting to develop a system for measuring carbon removal using electronic means rather than weight, he requires samples collected from Cyan units, so we are working to source those for him.

Sample collection instructions to help David develop electronic CO2 removal measurements for Cyan. David Wilson provided the following suggestions:

“The best way to assure I’m getting a fair result is to send the entire output, and to make sure it’s completely mixed including smashing the lumps. It should also be as dry as possible as any remaining moisture affects the results–both of the weighing method and the EC method. A freezer bag is probably the best thing to put it in, since it’s supposed to be air tight. And then put that in a padded mailer or a box (preferred).”

So, here’s what we need: 5 runs each for 2 participants, we’ll have 10 samples to send to David so he can plot 5 data points. Both runs will be replicates of each other. - times in the humidity chamber with air pump for testing:
6 hours
12 hours
18 hours
24 hours
30 hours

Each test should consist of 10 g Ca(OH)2 spread out to no more than 2 mm thickness on a coffee filter - if the Ca(OH)2 is ever soaking wet, it won’t be taking up CO2 as efficiently due to clogged pores. Either label the corresponding test as such or repeat the test with new Ca(OH)2.

Dry for one day, oven dry at low temperature (200 F for 1 hour should do it)

If you can also record your local humidity conditions during the test, that would also be helpful.

Important Notes:

  • We will be using fairly pure Calcium Hydroxide
  • Starting weight (should be 10 g)
  • Ending weight after humidification for your particular run time + drying at 200 F for 1 hour
  • Label your bag to David with the starting weight only and the run time (leave off the ending weight but record it on your end - we will see if David can estimate the ending weight
  • collect all 5 bags and mail it to him (please DM David for his address)

Also: please include a sample of the original, unprocessed (right out of the bag/bottle/jar) Ca(OH)2. This can help me figure out a way to offset inaccurate results due to impurities in the input material.

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