Air purifier?

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WussRedXLi

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CatLuVer said:
Philips air purifier looks good
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Best Denki Taka @ SGD199. Performance is about the same as the Sharp A28.

Sharp A28 is $135 at Best Denki Taka for the pink version. But I think already OOS. Qoo10 was selling at $99 (self-collection at Liang Court), but OOS liao.
 
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Akai Ryu

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WussRedXLi said:
You can check out the long list of issues here. And the issues are quite serious :

https://www.google.com.sg/?gws_rd=ssl#q=issues+with+air+ioniers

That said, Novita got the NAI9000. It's an ioniser + ozone generator.

There is also an air sterilising model, also equipped with a HEPA filter. Very poor performance to $$$ ratio though. NAS6000.
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With all the fanciful features....Novita also have some of the most "extra" filters to purchase....not a good long term investment imo
 
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WussRedXLi

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kerwen said:
thanks, u been very helpful
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You can check out the long list of issues here. And the issues are quite serious :

https://www.google.com.sg/?gws_rd=ssl#q=issues+with+air+ioniers

That said, Novita got the NAI9000. It's an ioniser + ozone generator.

There is also an air sterilising model, also equipped with a HEPA filter. Very poor performance to $$$ ratio though. NAS6000.


That said, HEPA technology originally is developed by USA DOD to combat radioactive dust/fallout by filtering it effectively.
Also, take it that HEPA can filter germs. It can also filter out a vast majority of viruses, keyword is a properly manufactured HEPA filter. (coz there might be weak spots, non-uniformity...ie integrity). There is such a thing called leak test, those interested can google "DOP/PAO leak test".



Likewise, N95/N99/N100/P100 masks can filter viruses and very effectively prevent spread of airborne infections. This is because virus particles do not float in the air. They attach to aerosols that are expelled by a person when he sneezes/coughs/talks. These aerosols are pretty big.
If you google, there have been studies done by research units and CDC etc. In order to succumb to an infection, you'd also need a X number of virus particles/virus load, number depends on the type of virus/disease..ie infectivity. You cannot get infected with just 1 or 2 virus particles.

HEPA filters are used in SGH Burns Unit, I have seen it myself at Mount E High Dependency Unit (most probably ICU also), SGH Haemotology Clinic etc.
 
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WussRedXLi

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Very interesting read regarding ug/m3 concentrations during the 1997 Indonesian Haze episode (our previous PM10 record of PSI 226).


http://www.fire.uni-freiburg.de/se_asia/projects/airpoll.html



The smoke haze emitted from the fires accumulated in the atmosphere up to an altitude of 3000 m and spread over neighbouring countries. At its climax in the third week of September, an area of more than 1 Mio. km2 was covered by thick haze.

Air pollution in Indonesia, caused by particles which is the major pollutant in the haze, reached levels that would correspond to a Pollution Standard Index (PSI)() of above 2000. A PSI of 400 is already categorised as hazardous. The highest pollution levels recorded in Malaysia and Singapore, were equivalent to a PSI of 900 and 226, respectively

a) Development in Sumatra
In Sumatra, highest TPM-values with a maximum of 3940 µg/m3 on the 29th September were measured in Jambi, southern-easterly Sumatra


b) Development in Kalimantan

High particle levels in Kalimantan occurred in Palangkaraya (Central-Kalimantan) during 28th of September and 22ndof October with three major peaks from concentrations of 3200 to 4050 µg/m3 TPM. The first peak occurred from 28th September to 3rd October with a maximum of 3300 µg/m3 and fluctuations in the precedent and subsequent days from 2300 to 900 µg/m3.


:s22::vijayadmin::eek::s13:
Last night, we peaked at 131 ug/m3

7 Oct 2014
Weather History for Jambi / Sultan Taha, Indonesia
7:00 PM 29 °C 25 °C 71% 1009 hPa 0.8 km Smoke
Weather History for Palangkaraya / Panarung, Indonesia
5:00 AM 23 °C 22 °C 93% 1012 hPa 0.8 km Smoke
Weather History for Banjarmasin / Syamsuddin Noor, Indonesia
8:00 AM 24 °C 22 °C 80% 1012 hPa 0.3 km NNW 5.6 km/h Smoke
 
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chuanz

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WussRedXLi said:
Coz that's the breakpoint. Actually 50-100 is another breakpoint. All these apply differently in the equation.

If you can apply those breakpoints, then ok.
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Pls help to validate... hope I didn't apply the formula wrongly... :)

Calculated PSI may be off by 1 due to rounding error as NEA published rounded-off PM2.5 concentration, which upon conversion to PSI, is rounded-off again (so that u get a round number PSI).
 
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WussRedXLi

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Sian, bro Chuanz's page is 36 hours late to the party.

6 Oct haze PSI peak = PSI 178 6pm South
21 Sep haze PSI peak = PSI 172 8PM West (124 ug/m3 peak)

157730206.73McMQ3A.1hrPSI7oct.jpg
 
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LA-Q379SB vs AX40H5000GMD

i am a little confused between the 2. need some help fro bros.

Please advise which one is a better investment.
I am aware LG is bulkier, but it has the nano-ion tech. Does samsung has it ?
 
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Asakura said:
sorry there is no spoon here. and like WRX said, here don't recommend air ionisers.
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Sanyo last x got gd model but think bought by Panasonic
Not ion technology
Dislike ion technology. Noe sure same as what u said ionizer

Not easy to find one without ESP Asia brands
 
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WussRedXLi

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hotyrole said:
LA-Q379SB vs AX40H5000GMD

i am a little confused between the 2. need some help fro bros.

Please advise which one is a better investment.
I am aware LG is bulkier, but it has the nano-ion tech. Does samsung has it ?
Click to expand...

Samsung has VirusDoctor. Don't think you'd need it anyway.
As mentioned, LG is very similar to Sharp's Plasmacluster.

Both are around the same, I believe the LG costs a wee bit more.

Samsung's virusdoctor (ion feature) can be turned off.

 
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WussRedXLi

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Other than Activated Charcoal, this is what Plasmacluster is advertised to do.

 
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WussRedXLi

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HEPA can do viruses and bacteria as well, as mentioned earlier.

This video must re-post. (largest smoke chamber I can find)

 
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Laneige

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