Ok. Bought the meter and it works great. I had it set up about four meters from my table saw and the readings shot up within a couple of minutes of cutting plywood without my dust collector turned on. I built a 5-sided Corsi Rosenthal filter with a 20 inch “Air King” box fan and Merv 14 filters. With the fan on high my pm 2.5 levels drop to single digits within five minutes. This is after intentionally running up the reading to 30 or so by blowing dust around with my air compressor. Without the filter the levels dropped very slowly. For reference my shop is 20x30 feet with 10 foot ceilings.

Thanks Frank , a very sobering review. I think I need to change some of my practices in my workshop......

Awesome mate! Definitely an eye opener!!!! thanks, much appreciated

Thanks Frank food for thought my friend

Brilliant - thats got me very worried!

Great video! This helped a lot to understand how air quality monitors work!

Great video. Thanks for the info and advices. Best wishes.

Excellent video Frank! When I got my room filter I want one of these as well. Top stuff!

Thank you, good video. Bought one!

Thanks Frank. I’m guilty of missing the obvious. I put on a mask to work with all types of woodworking machines, but never when emptying the shop vac. So that’s one thing to change. Also I put my mask on to do the work but take the mask off as soon as I finish sanding/routing etc, and not allow for the dust to settle. Plenty of lessons learnt and your 20 minute video might have saved my life. Or lengthened it at the very least. My new habits start today👍🏼

Great video Frank, very well done sir

Brilliant Frank, thank you for doing this video. Personally I try do do all my sanding outside, and any sawing, drilling etc I try to remember my mask, but your video is an eye opener and I will certainly have it in mind and hopefully learn from it.

Great vid !

Great video! Thanks Frank. You missed the explanation of the info on the second screen that shows after pressing the vsck button. Great video! Thanks for all the tests!!

Think I will ask work to get me one of these, I have to cut loads of MDF (Hate the stuff). Thanks Frank, like your detector and your pencil ✏😀👍

Great video Frank, Amazon here I come 😊

Frank, Brilliant video, it reinforces what we all probably know just don't act on. I'm glad you shared your findings. One thing I don't know is how the sensor works, does it have is own filter that needs cleaning or is it something like two plate or optical sensors and the particles flow between them and get detected. Lastly, I use and find the Abranet sanding discs excellent. They are a mesh and so when used with a vac the air/particles get sucked through the pad and can leave the sanded surface dust free. Worth a try. Keep up the good work. 👍

Great stuff Frank! Might have to get one of these. Think it might push me to get an air filter as well after seeing the high numbers.

Do they make outdoor sanding tables, with bench dog holes?

Brilliant explanation. I do always wear a mask but now I know how much I need to. I didn't realise the particles below 1.0 could enter the blood stream - definitely glad I stopped doing short bursts of sanding without attaching the vac a while ago. Last time I empty the vac in the shop, mask or no mask.

Good explanation Frank. Its alwaye the sander that kicks up dust. I had bought the raspberry pi equivalent components last year, but still haven't connected it.

Hi Frank, I just found your channel while doing some research on improving my shop air. I’m definitely going to get one of those meters. I have a dust collection system with a cyclone but it is home made and far from perfect. I was thinking of making a Corsi-Rosenthal type air cleaner and I want to see how well it works.

Well worth making the video the sanding test was alarming with how fast the meter reacted. I might be sanding outside in gale force wind from now on. Thanks.

Great video Frank, so now I want one of those 😂 Some close grain hardwoods I imagine would produce similar results to the MDF 😮

One of the best reviews. How accurate will it be after a few months because of dust collecting in the unit

never empty shop vac in the workshop alwas outside good video frank

Excellent information thanks. I have the Record Power two stage air filter and it would be really useful to know how quickly it can bring the dust down to acceptable levels (currently I exit the workshop and leave it on for 20 to 30 minutes when I "think" the dust levels are too high). Will definitely buy one when funds are available.

What A COOL DEVICE, WOW ! Thank You For The Review. Can You Test Them With Smoke And Such? CO2 And CO ?

Hello frank, very good video. Can you tell the reference sensor or the web page to buy it. And can someone help me on how can i save the data for instance every minute? Thanks

7:16 PM 2.5 maximums are in 2023 EU 25 UK 20 UN 10

Both interesting and quite scary Frank! Thanks for sharing. My method for emptying the workshop vac, is to remove filter very gently, place it into the rubbish bag and twist to seal, then shake it like a Maniac! Then I leave it several minutes before gently getting it out and tipping the rest of the container into the bag. Do you have a mitre saw? Would be interesting to see how badly they pollute the air as there is lots of visible dust. I’ve just done some mods to mine to improve it dramatically.

I don't have a window or a way out to the streat, can you tell me what kind of dust colector can i bought?

Awesome video. How has the unit performed over the past year or so?

But does that sensor go up in value if you open solvents alcohols?

Is it normal pm1 reading is always lower than 2.5 and 10? I would think there's more small particles than large

wow rescue the data of is pm monitor?

Ok

Let me be frank, Frank. This meter could not have been explained better than you have done here. Might I suggest you do an Amazon review, and post a link to your video. Your video answers many questions people have, and they get a bit of Frank-ertainment in the process. My son Dan,(step son David's camera man from Make Something), does his bit in a tiny little basement and even though he has built an extractor, you have me wondering. He has turned a lot of acrylic balls and such, and that can't be good for his air when sanding. Now on to the next video. Retirement has it's perks.

I noticed when you were sanding you pointed the outlet directly at the meter which to me gives a false test, test it when pointing away from the meter. Also, never empty your bags inside.

Great video and presentation! I recently received and have been using. Prior I ordered a VT-6IN1 off Aliexpress that is mostly useless other than HCHO, TVOC's, CO and CO2. I am wondering about the ease of replacing the sensor with a PMS5003 or -ZHS-002- ZPH02 PM detector. Would be great if swapped and was plug and play, though I doubt that will be the situation. I did order two other items to compliment, a DeWalt 20V to 18V adapter off eBay "For Dewalt Battery Adapter DCA1820 18V/20V Li-ion Convert To Ni-Cad DC9096 Ni-MH" from "batterytool" store and a more versatile "DC 6V-40V To 5V 3A Double USB Charger DC-DC Step Down Power Converter USA Ship" from ks_cables_n_more. I use DeWalt batteries mainly, so went with that adapter to have. Next up will be some sort of packaging to make all neat. Thanks for sharing!