"Cohort 43 is quite unique in that there are no face-to-face meetings, but lots of GoToWebinar meetings to discuss protocol and findings. Curiously, people seem to have more time available to come to internet meetings, record incidents in their house…"
"The ROCIS Range Hood Guidance Document update - see below - has resulted in correspondence with researchers and ventilation experts. During those conversations, several interesting points emerged:
- The range hood capture efficiency testing is progr…"
"We have had very few smokers in the ROCIS sample of participants. They were not deliberately excluded: it may be that smokers do not wish to participate in a survey on particle counts in houses. The results could be discouraging. In this cohort, the…"
"OK, I did five trials of approximately the same set-up. Each time the onions were ready and taken off the burner (or squelched with canned tomatoes) 8 minutes following the start of heating. Initial Dylos total readings ranged from 72 to 281. Peak D…"
"There have been two particle sources that have been identified lately. One participant said that his wife's hairdryer activity would send Dylos counts to 20,000. What causes that? Is it particles given off by the dryer itself or hair/treatment parti…"
"There are more sensitive CO detectors on the market but, unfortunately, their very sensitivity makes it impossible to meet UL standards. The revised Canadian CO sensor standard, CSA 6.19, has a section for sensitive alarms. I am not sure if any prod…"
Most of the research we did on combustion spillage (including surveys) was undertaken in the 1980s. Retrieval of those reports (even ASHRAE papers) is not easily done through Google or other general sources. The corporation I worked for, CMH…"
"I saw an interesting article on cleaning make-up air which referenced the hardware found in hydroponics shops. If you really want an effective carbon filter with a supplemental balancing fan, here is a description of where to find one: https://www.j…"
"So here is my first report (after which I will wait until I have multiple trials). I am trying to set a baseline for frying a single onion plus garlic clove in a cast iron fry pan (8 inch bottom diameter) on an electric burner. The kitchen windows a…"
"My new Dylos is coming in today. I am going to try and calibrate an onion being fried, as I often start a recipe with frying up a diced onion. I will use the Dylos to record the peak on several frying attempts so that I will have a baseline to compa…"
"Tom, I have seen the Allegheny County Health Monitor RAMP data and it showed a significant drop in PM 2.5 in the early morning of January 24 from about 13 micrograms per cubic m to < 1.0. The timing and size of the drop correlates well with the Dylo…"