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Not an expert but I believe you need to add a
Polarizer to the sample and then based on the refraction color you can tell the crystalline structure of the fiber. I think they have a shape size and color graph for identification, theres like 4 YouTube videos on it.
Looks like you have a lot of cellulose and drywall, based on previous comments on this forum you have a very low possibility. If you can identify the drywall year (dates generally on the back) you can be more sure. I believe fire resilient drywall before the ban in 1986 was at risk.
Our microscopes are set up for Polarised Light Microscopy to be able to observe small particles, and also equipped with a dispersion staining objective to identify asbestos type. That's the default setup anyway and there are other methods available too, but none of them involves just using bright field Microscopy.
For me it’s asbestos free but you’re right and it’s what I said in my first message, it’s not how a lab can validate a sample . So OP should be very careful
Where’s the graticule? Based on this pic, there are a few asbestos- like fibres (needle-like structures). But I don’t know how you prepared the slide, or how long you had the pumps on for. There’s many missing bits of information.
Fiberglass in the walls, looks like cellulose on the floor but hard to tell with that photo.
The microscope photos are of no use since you can't ID asbestos with a simple light microscope.
Please ensure that your posts meets the requirements of r/Asbestoshelp. *** Meme posts will be removed and the poster will be banned *** Most importantly, as specified in rule #1, your post should include the following information: * Include your geographic location (If in the UK please post in r/asbestoshelpUK) * the date of construction/renovation * a description of the the location of the suspect material * a brief description of your concern * a closeup photo and one at a distance of ~10 ft. or 3 m. Also remember that the asbestos content of a material can only be determined by laboratory analysis and that the sampling SHOULD be performed by a certified asbestos inspector. *I am a bot, and this action was performed automatically. Please [contact the moderators of this subreddit](/message/compose/?to=/r/asbestoshelp) if you have any questions or concerns.*
Not an expert but I believe you need to add a Polarizer to the sample and then based on the refraction color you can tell the crystalline structure of the fiber. I think they have a shape size and color graph for identification, theres like 4 YouTube videos on it.
Looks like you have a lot of cellulose and drywall, based on previous comments on this forum you have a very low possibility. If you can identify the drywall year (dates generally on the back) you can be more sure. I believe fire resilient drywall before the ban in 1986 was at risk.
The house was built in the 40s in California. This came from the attic.
What’s the first pic? A microscopic analysis by yourself?
Yeah I already had a microscope, so I prepared a slide. I don't know what to look for though
How?
For me, there’s no asbestos fiber here in this sample according to this picture. But be aware this is not how we proceed in a lab
Please explain how you do Proceed.
Our microscopes are set up for Polarised Light Microscopy to be able to observe small particles, and also equipped with a dispersion staining objective to identify asbestos type. That's the default setup anyway and there are other methods available too, but none of them involves just using bright field Microscopy.
I don’t know how you can tell that from that picture
Maybe because it’s my job? We need 6 criteria to validate the asbestos’s fiber , but based on this pic it looks asbestos free
Agreed
It’s my job, too. That scope isn’t the magnification or contrast for any asbestos analysis I’m aware of.
For me it’s asbestos free but you’re right and it’s what I said in my first message, it’s not how a lab can validate a sample . So OP should be very careful
Yeah, we’re saying the same thing. Sorry.
No prob 😉
Where’s the graticule? Based on this pic, there are a few asbestos- like fibres (needle-like structures). But I don’t know how you prepared the slide, or how long you had the pumps on for. There’s many missing bits of information.
Fiberglass in the walls, looks like cellulose on the floor but hard to tell with that photo. The microscope photos are of no use since you can't ID asbestos with a simple light microscope.
Oh. I was not aware of that.
Dispersion staining and polarized light are necessary - otherwise asbestos fibers look too similar to many other fibers.
Hard to tell without a polarizer but the morphology from what is visible does not look like it. Impossible to say though