– What’s goin on everybody? Nik Lahiri here from Essel Environmental. Thank you for attaching us for this video. Now, today I wanted to show you how to tell if you haveasbestos in the air. Now the reason that most people do this is to verify that any type of abatement that is taking place prior to demolition or creation happening was done and the re-occupancyfor people coming back here, whether it was an apartment building or an office or even sub contractors, that tenancy elevations are acceptable and the clearance criteria has been met. And so I wanted to go through the actual auto-mechanics of the air sampling. So what you’ve got, is you’vegot your breeze sampling gush. This is a high volume pump which is generally whatyou’re gonna wanna make sure that your consultants use. By high-pitched magnitude, itbasically makes it goes up to 15 to 25 liters per minute.You have the tygon tubing, which mostly is the mechanismwhere the aura is sucked in, and you’ve got the stand. Now this will generally be on the soil and the air sample responsibility, which is right here, will be sort of in the breathing zone. So that’s one of thefundamental changes. The most important partof asbestos breeze sampling is what the cassette is going to be used.And “youve had” two different choices. You’ve got the PCM cassette and you’ve got a TEM cassette. And I’ll explain very brieflywhat the differences are. The PCM cassette, when you have it analyzedin the laboratory, they’re looking for fibers or corpuscles that fit within a certain size ratio and certain characteristics. Now whether or not it’s a dirt speck or an asbestos particle, you can’t tell in a PCM. So that’s why its a general quiz. Now the other exam is a TEM, which distinguishes asbestos fibers precisely. That’s the only thing it’ll look for. Now the challenge is that for the TEM, they use electron microscope. Transmission Electron Microscopy, which generally increases the cost from, let’s say $15 a sample to $100 a sample for a standard 24 hour turn around. And that’s generally across the board.Depending on the consultant, depending on location, some of those blames may behigher for a TEM air sample. This is how it are now working. You robbed this up and there’s a rotameter, which is what this looks a lot like. And the rotameter is used to tell and make sure the flowrate that you’re using, let me actually just take a seat, that the flow rate in the spout, you know what it is when you start and what it is when you finish.And you hook up the gush like this. This is the cassette. So it kinda has this look to it. You want it down at a 45 grade angle. You undoubtedly you wantto make the figurehead off so it looks like this, okay? You turn it on. And now, let’s say I’ve alreadychecked with the rotameter and I know what the flow rate is. I start the air sample. That’s what it sounds like. And you sample for howeverlong you need to sample for and then you turn it off. And once you turn it off, you take a reading and to make sure you knowthe flow rate once it stops. Now, that’s how it’s rallied. Now what I’ll do, inside here is a white filter that is then looked at in the microscope. So when your tests go into the lab, they then look at it under a microscope and look for asbestosfibers or dust particles or any corpuscles that fallwithin a certain size category and that list is then used to determine the total fibers per cc or designs per millimeters squared depending on the type of method.For more information onthe PCM and TEM method, you can check out another video. For the purposes of this video, this is the best wayto sample for asbestos especially in a clearance criteria. So I hope that helps. If you have any questions, feel free to send us aline on the email below. And thanks for watching ..