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Thread: Dust, smoke and cooking sausages
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16th December 2019, 10:13 PM #1.
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Dust, smoke and cooking sausages
As there was a forecast for smoke from bushfires around Perth I've been watching 2 of my dust monitors on and off all day.
WHO recommendations for PM2.5 is 200 ug/m^3 and half that for seniors and kids or persons with pre-existing conditions.
The highest it got was around 30 µg/m^3 (usually its <10) around mid morning and I could just smell that it was smoke and there was clearly a smoky haze across the city. Then it slowly came down from there after the sea breeze came in.
Then at about 5:30pm SWMBO decides we're having lean beef sausages for dinner whereby it shot up to over 250, and now about an hour later it's still ~150 in my office 4 rooms away from the kitchen. This is despite having the stove exhaust hood fan running - we clearly need to run it on a higher setting .
I should add that during this time I could not see anything visible in the air inside the house.
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16th December 2019 10:13 PM # ADSGoogle Adsense Advertisement
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16th December 2019, 10:17 PM #2China
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So sausages are more hazardous than bushfires mmm interesting
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16th December 2019, 10:47 PM #3Woodworking mechanic
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Probably need a Clearview in the kitchen
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17th December 2019, 12:07 AM #4GOLD MEMBER
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Bob you should look up how much oil mist in the air is acceptable in order to truly know if you need better kitchen ventilation, or if like the dusty, recommend moving the stove outside.
Pete
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17th December 2019, 08:17 AM #5.
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Oil mist is nominally 5mg/m^3 but it's not just oil mist, particulates from cooking dust contains a spectrum of (burnt) hydrocarbon fragments similar to that emitted in internal engine exhausts.
In terms of dust levels yes BUT cooking sausages is relatively quick process even if the particulates hang around for a couple of hours , whereas bushfires can generate weeks of high particulate level exposure.
Risk is "particulate levels" X "exposure time" which is why the average DIY who does a couple of hours wood work in the weekend is at low risk. In contrast to the retired turner who spends 40 hours in their shed needs to take thinks a bit more seriously.
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17th December 2019, 10:33 AM #6
Hi Bob,
This company obviously has an interest in selling AIR treatment products, I actually use some of their products as they are Australian, and where possible, use less toxic natural ingredients.
This is more a "something to think about" paper, and may be of interest to those of us who have Mold sensitives.
https://san-air.us16.list-manage.com...c&e=013756de86
Mike.
EDIT: The slides shown appear to be mold colony test slides.(1) Our small workshop layout __ (2) Bandsaw circle cutting jig __ (3) Spindle sander modifications __ (4) Dust Sensor
(5) Router table redesigned ____ (6) DC and where it all began __ (7) Bandsaw dust extraction build
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17th December 2019, 12:16 PM #7SENIOR MEMBER
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17th December 2019, 02:13 PM #8.
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19th December 2019, 11:42 AM #9Woodworking mechanic
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Smoke haze north of Sydney is bad today so I thought I’d do a particle count under the Pergola.
I have the “genetic” counter that most people bought on eBay. It has two screens that you can switch between.
What I don’t understand is the difference in readings between the two screens. These are the screens.
Normal screen
4A845061-8FBA-406E-8A9B-8AD5A4E61A53.jpg
Other screen
D82C35B9-E960-44C4-A575-83665B0E5BF7.jpg
Anyone got any ideas re the reading variation?
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19th December 2019, 12:00 PM #10.
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19th December 2019, 12:03 PM #11Woodworking mechanic
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I uploaded the wrong normal screen picture - now corrected.
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19th December 2019, 12:25 PM #12Woodworking mechanic
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Been sitting awhile..Temp now 38.9oC
Normal screen
FF5E2C58-B735-4013-BBB5-AB67811AE8D8.jpg
Other screen
3A7C4027-85F4-4EA2-9423-B6023CD363BD.jpg
Still showing major variations.
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19th December 2019, 03:12 PM #13Woodworking mechanic
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3.00pm. Levels are high and still the large variation.
Normal
510804C0-11C3-4D03-9732-7F927FF119C1.jpg
Other
D652AAC7-C973-41DB-A6C9-488F21A3AA18.jpg
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19th December 2019, 06:12 PM #14Woodworking mechanic
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Cold change coming through and levels are coming down. At these lower levels, the readings are now almost the same ?
Normal
FD0F0002-A054-49C2-8FB6-71D189681737.jpg
Other
2CA877FB-18AD-4BDD-841C-A8496E43581D.jpg
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19th December 2019, 11:37 PM #15.
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I cooked some burgers for dinner.
When my PM7300 counter said PM10 of 300, the little generic unit said 211 on "normal" screen and 328 on "other" screen.
Looks pretty consistent one screen over estimates and the other under estimates.
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