Recent FAQs on airborne mold spore count reports or numbers - set #4.

Frequently-asked questions about how to interpret the mold test number that is returned by your mold test consultant or mold test lab.

This article series discusses the possible significance of different levels of indoor airborne mold spore counts and mold test reports.

Acceptable Mold Spore Count Levels in Buildings

These questions and answers about how to interpret the mold count returned by various mold tests were posted originally at AIRBORNE PARTICLE & MOLD COUNT NUMBER GUIDE - topic home. Be sure to see the advice given there.

On 2021-11-19 by Inspectapedia Com Moderator - do post remediation mold levels indicate whether mold remediation was properly done

@Anna,

Thank you for your question about post remediation mold levels.

Essentially you're raising a question of whether or not the original mold mediation work was properly done.

And you are raising a second question: if previous mold contamination remediation was properly done, is there a new cause of and presence of mold contamination in your home.

To answer these questions one would start with a careful review of the original work including documentation of the inspections before during and after the mold mediation job to be confident that that work was done correctly.

If there was a post remediation inspection and testing you would surely compare those test results with the current ones that you are seeing.

If the current inspection mold test results show mold levels significantly higher than at the time of post remediation, and if we think that the post remediation testing was done correctly so as not to give me falsely low-level, and the new results suggest a possible new mold problem at least worth further investigation.

Watch out: your mold consultant may have explained this point, but you haven't mentioned it and it's important:

Particularly with comparing levels of Penicillium sp. or Aspergillus sp. between indoors and outdoors, the numbers alone are very unreliable.

That's because the identification of the specific mold **species** in those two genera is so difficult that it's not usually done.

As a result you could be comparing pigs and cats.

That is to say the indoor Aspergillus or Penicillium mold may be an entirely different species than the outdoor one.

That's why inspectors usually rely on the presence of a high indoor count to make the interpretation that there's evidence of a problem.

And that's an example of why mold testing alone, without a thorough expert visual inspection of the entire building and a review of its history, is incomplete and unreliable.

That's particularly the case when the test results don't provide a strong indication of a problem.

On 2021-11-18 by Anna

HI- I'm in a rental house that was remediated for mold last year before we moved in. I've had allergic symptoms as had my daughter since we moved in 3 months ago.

We just had air ducts replaced and newest air quality test shows:

Total Non-Viable Spore Air Sample Results:
Representative samples were taken for total airborne fungal spores with a calibrated Buck spore trap. Total airborne fungal spore sample volumes were 75-liters. The outdoor total fungal spore level (Sample 04) was measured at 5,200 Spores/m3

and was comprised of Basidiospores (82%), Cladosporium (10%), and 3% or less of various other fungal spores. The air sample results are summarized below in Table B.

Table B – Air Sampling Results

Sample # Location Total Airborne Spore Count
(Spores/m3 )

*Non-Fungal
Background
Debris
Level
01 Rear Right (Daughter’s) Bedroom 480 3
02 Rear Hall 440 2
03 Front Bedroom at Closet 590 2
04 Outdoor Air 5,200 3

*The Background Debris Level refers to non-fungal debris seen in the air sample; such as skin cells, hair, fibers, dust,
dirt, etc.

The total fungal spore counts in the areas sampled indoors were lower than that found in the outdoor air. However, the sample collected from the Front Bedroom at Closet (Sample 03) had higher percentages of Penicillium/Aspergillus group spores than found in the outdoor air. In my professional opinion, the overall level and concentration was very low. Nevertheless, spores in this grouping are commonly considered to be among the water loss fungi. Therefore, the results
suggested a slightly altered indoor airborne fungal ecology in Sample 03. Some species of these fungi are considered allergenic and/or toxicogenic and should be handled with caution.

I've been running a HEPA filter air purifier and my symptoms have not abated. What I want to figure out- how do I know if this is just annoying versus toxic/carcinogenic since it says some species of these fungi are considered toxicogenic?

Thanks!

On 2021-10-16 by inspectapedia.com.moderator (mod) - dangerous to rely on mold "tests" alone

@Diana Daly,

With the medical concerns you cite, relying on any mold test is, in our view, a serious error.

You need a careful, thorough inspection by an expert.

On 2021-10-16 by Diana Daly

Continuing

A basement flood about 20 years ago has left a few different areas to date, about 2ft x 2ft in size. Air quality testing says the results are fine but I'd appreciate your opinion. I have a compromised immune system, have asthma, and frequent bouts of bronchitis and 2 or 3 of Pneumonia. My lungs have collapsed twice before with Septic Shock , which led to my being in a coma for 34 days the 1st time and 15 days the second time.

Results said penicillin/aspergillus, and cladosporium 40 per 50 or 80% spores per cubic meter. I'm trying to send you the emailed test results but my medical conditions also include being a technical dullard. Lol.
Thank you for your time.
Diana Daly 647-551-8447

On 2021-10-13 by inspectapedia.com.moderator (mod)

@Diana Daly,

We're glad to hear that you were able to get the help you need. Stay safe, and well.

Respectfully,

Daniel

On 2021-10-13 by Diana Daly

I googled mold remediation contractors in my area, sent them a few emails explaining my issue and 1 amazing and kind Contractor came to my home, examined moldy areas and did an air quality test FREE!

I know we're Canadians, but surely SOMEBODY will help you. It's hard to ask for help, but you're giving others a chance to shine.

 

On 2018-12-14 by (mod) - what to do about a high indoor airborne mold "count"

Johnny,

Yes it is possible to find high levels of Pen/Asp in a building even though you were not previously aware of a problem. For example insulation in an exposed basement or crawl space ceiling over a damp area can become a mold reservoir as can wood surfaces hidden by the insulation.

What to do about high indoor mold levels (or large areas of visible mold - more than 30 sq.ft.)

1. Find the mold & define the scope of cleanup needed

2. Protect other building areas from cross-contamination during cleanup

3. Remove the mold, throwing out materials that can't be cleaned, cleaning the exposed surfaces

4. Fix the cause of the mold growth

5. Inspect to confirm that the work was done properly

Air Tests for Mold are Very Inaccurate and Always Incomplete

Air tests for mold are highly inaccurate, costly, and defective in that even a "significant result" like yours fail to give a clue about where the mold reservoir actually will be found, how much cleaning is needed, and what repairs are needed to prevent mold re-growth in the building.

The result is, unfortunately, that you have to hire someone all over again to do what was needed in the first place:

1. discuss the health vulnerability of occupants to understand if there are occupants at special risk

2. discuss the history of building IAQ complaints to understand the role of the building

3. review the building's leak history: spills, backups, water entry, roof leaks, wall leaks, plumbing leaks, basement leaks, etc.

4. inspect the building for evidence of mold, leaks, areas of high moisture, areas of high risk of hidden mold

5. understand the building structure and materials (to identify highest risk areas for possibly hidden mold reservoirs),

6. report any visible mold contamination of consequence, and

7. decide where more-invasive inspection (cut a test hole or two) in the highest-risk areas is justified

8. define the scope of mold cleanup and related repair work needed

On 2018-12-14 by Johnny

Hello,
a high concentration (>150.000/cu.m) of Pen/Asp group has been found in our basement (mainly in the furnace room) through spores trap testing, exposure time:

15l/min for 5.00 min. On the other floors there are none or very low (<200 /cu.m) concentrations. we checked all the basement, but could not spot any mold or leakages/humidity, also there is no smell at all.

we have been living in this house for 4 year but had never had any issues with mold, nor did we see any mold. we ventilated the rooms, including basement regularly. now suddenly there is this mold.

so, we are wondering how this can be? where can the mold be hidden. could this have been caused by damp clothes and blankets that are kept in the basement? what should we do? for sure, we do want to solve this, but how should we approach this? thank you!>

On 2018-12-12 by (mod) - how bad are these mold count numbers

Zero mold in outdoor air would be a bit unusual unless the whole outdoors was snow-covered.

The counts you give are high and suggest that there has been leakage and area (s) of mold growth in the building.

Just how "bad" is arm-waving speculative since "air tests" for mold have enormous variability - up to 4 orders of magnitude - depending on test conduct details.

On 2018-12-11 by CB

Cladosporium 237,485 spores/m3

and penicillium/aspergillius 12,449 spores/m3

how bad are these numbers with zero in the outdoor air

On 2018-12-10 by (mod) - let me know what my mold counts mean

I'm sorry because I would like to help but I don't know what to make of those counts.

I don't know what test was done and I don't know what work was done on the house.

It would seem fair to me that the person that you paid to conduct the tests and he was also seen the building and who also has reviewed the job would be the best person to tell you whether they think that the work is complete and the cleanup was adequate or not.

I'm sorry that I can't give you more of an answer but the truth is I have no information.

On 2018-12-10 by Zhanna Perelstein

Hello,
I had mold and it was remediated. They did another retest and came back with a count of inside is 367 for total fungi and outside is 780 m3.

Can you pleaset let me know what that means as I have a biotixin illness related to mold and my nose is clogged since I have come back to the apartment.
Thank you.

On 2018-10-29 by (mod) - air tests for mold: results can vary by 4 orders of magnitude

Roy

Air tests as a building screen for mold are fundamentally inaccurate; results can vary by 4 orders of magnitude (1 may be 10,000) depending on details of how the "test" was conducted.

And at very low numbers the results have no meaning - one spore can blow in a window.

HOWEVER arguing with myself and to be scrupulously clear, when one count is enormously higher than the others, such as Pen/Asp forming 94% of the sample, the air test is NOT ambiguous : it is telling us that there is or was a large mold reservoir nearby.

What is more irritating (to me anyhow) about air tests for mold (and yes I have used that tool among others) is even if the test indicates a problem - yours does - it is not diagnostic nor prescriptive: it doesn't tell us

- where is the mold?

- how much is there?

- what is the extent of demolition and cleaning needed

- what caused the mold and thus what else needs to be fixed.

So you have to pay another expensive "mold expert" all over again to do what could have been done in the first place.

Until we have a clear indication of where the mold problem resides and what cleanup is needed, it makes little sense to me to hire anyone to "do remediation".

IF after cleaning out the obvious (moldy junk or boxes in a basement) you find more than 30 sq.ft. of contiguous mold, then yes, professional cleanup is appropriate.

Finally, anybody saying there should be zero Pen/Asp spores in a home is doing us a big favor by telling us that that speaker lacks education, training and expertise in mold contamination and cleanup.

All mold is everywhere all the time. In the air. A target of zero anything indoors is not useful.

On 2018-10-29 by Roy A

This site has been very informative. Thank you. I had an air test done this past week. Here are the 3 results that were of concern.

Chaetomium Raw = 4, 27 s/m3 % total = 1

Pen / Asp. Raw = 344, 2305 s/m3 % total = 94

Scopulariopsis Raw = 7, 47 s/m3 % total = 1

they did 3 tests. The results above were in the basement. The main house and outside tested 0 for all 3 of these specimens.

The house is 20 years old, in excellent condition and has never had water damage or flooding. The inspector said they seen no signs of “entry” for the mold. No wet areas, no dripping or damp block.

The test was conducted in the unfinished part of my basement. We moved in to this house 5 months ago and have done some minor construction up stairs but nothing in the basement.

There are items stored in this side of the basement that was previously stored in a non – climate controlled shed in by back yard. The unfinished concrete floor on this side of the basement was swept but not mopped prior tot he test.

They offered remediation quotes.($3500) My thinking is that I need to get rid of the several carboard boxes, rid of any stored clothes that are old (camping clothes and sleeping bags), mop the floor and wipe down the walls.
Do you recommend that these numbers in a basement are cause for concern / professional remediation? The basement is 2000 sq feet and the unfinished part is 650 sq feet. There are 4 windows in the basement and a sliding patio door in the finished side.

There were no fans run or windows open during or proceeding the testing but the 2 men were walking around the basement during the sample collection.

Some responses say there should be 0 of the pen/asp in a home and others say these low numbers in a basement could be caused by a dirty or dusty house / hvac system. I have the HVAC duct system being cleaned next week. I look forward to your professional opinion.

Thank you,

On 2018-10-28 by (mod) - Could please interpret these results for me

Because Airborne mold tests are fundamentally inaccurate own order of four orders of magnitude I'm sorry to say that the test results you are asking about have no meeting to me whatsoever.

On 2018-10-28 by Sandy

Could please interpret these results for me
Ascospores raw count 37 Count/m3 is 760 12.2% of total
Asoergillus/Penicillium raw count 6 Count/m3 is 100 1.6%of total
Basidiospores raw count 257 Count/m3 is 5270 84.6% of total

Total Fungi raw count 305 Count/m3 is 6230 100 % of total

On 2018-09-22 by AA

Hi,
Following is the report of Mold testing done by a remediation company. The swab test result was Chaetomium, Spore estimate: Moderate, Mycelial Estimate: Few, Spore count 640 /cm2.

They took two air samples One in the bathroom and other from outside.

Outside/Baseline
Alternaria raw count 1 ; 7 Count / M3.
Ascospores raw count 174 ; 1160Count / M3
Aspergillus Penicillium raw count 26 ; 173Count / M3.
Basidiospores raw count 286 ; 1907 Count / M3.
Chaetomium Raw count ND
Cladosporium raw count 19 ;127Count / M3
Curvularia ND
Myxomycetes raw count ND
pithomyces raw count 2 ; 13 Count / M3

Inside/Bathroom
Alternaria ND
Ascospores raw count 3; 20 Count / M3
Aspergillus Penicillium raw count 34 ; 227 Count / M3.
Basidiospores ND.
Chaetomium Raw count 3 ; 20 Count/M3
Cladosporium raw count 3 ;20 Count / M3
Curvularia Raw count 1; 7 Count/M3
Myxomycetes Raw count 1; 7 Count/M3
pithomyces ND

Following were not found in bathroom or outside air samples
Epicoccum
Fusarium
Stachybotrys
Stemphylium
Torula
Ulocladium
Unspecified Spore
Bipolaris|Drechslera

Can you help me evaluate these results. Is it a dangerous situation for health. The remediation cost is around 3000$ by the same company

On 2018-09-20 by CT - how to tell if mold could be growing up through the slab.

And also how to tell if mold could be growing up through the slab. We have mold/mildew all over back siding as well and discoloration going up the brick...only where the water pools and stays saturated.

We had an air quality test done that came back with about 11 different mold spore types in our house. The asp/pen was higher than the outside count and half the rest were only found inside and not outside. Our tester said although the asp/pen was slightly elevated and there were a few only inside and not out we are okay.

We have been sick this past year constantly and had many health issues come up so I don't believe him.

Asp/pen was found in the attic in areas in the lumbar yard mold and there is brownish spots all over the plywood from roof. We also have a drainage issue with the backyard toward the house and we worry about mold growing up through the slab. Any thought on any of this whether we should be concerned or is he right? We tested positive for mycotoxins that come from asp/pen as well.

On 2018-09-15 by (mod) -

With the footnotes that air samples for a building screen for building mold contamination are fundamentally unreliable, with as much as four orders of magnitude of variation between measured and actual, nevertheless your data suggest that there could be an aspergillus Reservoir somewhere indoors.

On 2018-09-13 by Me

We did some mold sampling (Air-O-Cell cassettes @ 150L) in an office area, the total raw spore count was 151 spores. Of that, 146 were aspergillus/penicillium group, with a spores/m3 reading of 973. We did another sample outdoors and had 2412 raw spore count. Of that, 8 were from aspergillus/penicillium group, with a spores/m3 reading of 53.3. How would this be interpreted?

On 2018-07-21 by (mod) - Air-testing for "mold" is fundamentally unreliable, particularly if the results are negative.

Jemma

You don't say what kind of test was performed nor how. Air-testing for "mold" is fundamentally unreliable, particularly if the results are negative. A small change in site conditions or in how a test was conducted, can change the "result" by up to four orders of magnitude. So 4 could be 4000.

However finding 4 spores of ANYTHING in a building, alone, can not be taken to mean that there is a hazardous condition. 4 spores of anything can float in a window or come in on someone's shoe or hat.

Regarding your apartment "test" - if you hire someone to provide an inspection and testing service and if can see a report on a computer you can certainly print a copy for your doctor, or safe and email a copy to her. Or demand that such a copy or file be provided to you.

When you are not the person who hired the service then you may need help from an attorney to argue that as it is your personal health and your rented property at stake you must be provided with the results of such testing.

Knowing virtually nothing about your building, its construction, location, leak history, etc. I'm sorry but I cannot even speculate about its condition nor that of its HVAC system.

On 2018-07-21 by Jemma76

I have been suffering from auto immune symptoms from mold ezposure which was diagnosed through a blood test done 6 months ago. I had my work space tested by reputable company and the results were only 4 spores in total. I had never suspected it be my work environment but was doing process of elimination.

My apartment which I rent was built only in 2014 and from site looked like the cleanest and newest complex. After multiple requests to our leasing office they had someone come out and test the air quality and inspect the apartment. T

hey found a very small leak in sink under bathroom but no physical mold present and replaced it and the test results came back and they said it was clear. They couldn’t provide me with a copy of the report or findings and I was only able to view on their computer without taking a picture.

The main line item on the report that stood out was aspergillus penucillium with highest area of the house spore count at 45/ 585 spores /m3 and this strain was 75% the exterior patio which I’m not taking into acount was as follows 134/1742 m3 and 53%

My doctor who has been treating me for mold
Ezposure has said this should be closer to zero as I have air filters through my house and do not open the doors.

Should I get my own independent testing done? Do most rental properties not give you a copy of the test, it seems strange if there is nothing to hide.

I know these levels aren’t extremely high, are there cases you’ve seen where people can get sick from lower levels. I believe these are coming from the hvac unit even though they said it is clear. Thank you

On 2018-06-29 by (mod) - Are AS/PEN mold spores ever considered toxic?

Pen/Asp or Penucillium or Aspergillus mold spores are harmful to humans and other animals at significant levels of exposure.

The appropriate words that could apply range from allergenic to pathogenic o rocic. People use the term toxic more loosely To mean harmful.

On 2018-06-29 by Mary Neilson

Are AS/PEN mold spores ever considered toxic?

On 2018-05-22 by (mod) - remove exterior siding to fix mold contamination?

No I wouldn't necessarily recommend to fight to have the exterior sheathing removed. If it's fiberboard it's probably a motor-assisted material anyway having been impregnated with wax are coated with asphalt. The cost of removing the exterior sheathing is ruinous. And probably not necessary.

If moldy drywall or gypsum board or moldy insulation were being left in place that would be a serious defect.

Obviously I can't access the mold risk by a text but an expert or even halfway competent on-site inspection should be able to examine the wall cavities for completeness of cleaning and Sealing

On 2018-05-22 by Anonymous

Thank you. This is what I had thought from the beginning. Everything affected should be removed.

This was/is an outside wall. They did scrape off the studs that were infected. They did not remove the paper material behind the studs as it is a thick board type material but separate from the stucco.

I forget the name of the material but these are floor to ceiling sheets and I was told it was used in the 60's to seal out water and they were not able to be removed and replaced. So they scrubbed them down and sealed.

The wall is still open but covered with plastic and we haven't put up new sheetrock yet.

Would you recommend putting up a fight to have this material removed. I wish I had the name to give you of what it is. It is not used anymore and therefore they would have to come up with a new barrier in this area.

This project has dragged on now for over 50 days so I have some weight when pushing back because the insurance company and remediator took so long to even get started.

On 2018-05-21 by (mod) -

Exactly.

Such air cleaning machines can never ever remove a mold problem from a building.

You have to physically remove the mold from the surfaces or materials in which it's growing or if those materials cannot be cleaned then the materials themselves are removed.

That's why I use the example of waving a vacuum cleaner in the kitchen thinking you're going to vacuum dust from below the living room couch. It's not going to happen.

Similarly, while biocides and sealants are perfectly appropriate and useful after a mold Reservoir has been cleaned or removed, they are a very poor substitute for those actual physical cleaning and removal steps.

A typical example of improper work is when someone sprays sealant on moldy drywall only to find out later that there was a large mold Reservoir inside the wall cavity.

Moldy drywall gets removed, not sprayed.

On 2018-05-21 by Anonymous

Yes, I meant an air cleaning/sweeping machine. Supposedly with HEPA filters. This was in a contained area. They did not vent to the outside of the house, though. I also don't know if these were clean filters or used prior to our house.
They did dry the area and then scrub it down with a microbial cleaner.

Not sure of the brand name but i did look it up at the time and it was the brand a mold specialist told me about. Then used a product to seal in whatever mold was still on the walls.

Again I forget the name but I looked that up as well and used by most remediation companies.

My concern is that if they did clean up all the mold, remove the contaminated parts, and then seal the affected areas why would there be any residual mold floating in the air. Should we have done a surface test. The problem is that this isn't offered.

I did do ERMI tests when we first moved into this house but the Mold testing firm said they don't do that and those tests were questionable.

Can you explain why the air test is unreliable. I did have them also test the air outside the contained area and there was no mold.

Can the cleaning products cause allergic reactions. I have had burning eyes since they started the remediation.

I was away for a few days and the symptoms went away. Came home yesterday and it started again. It has been a few weeks since they did the remediation. I can still smell some type of chemical when I get close to the area.

No one else in my family can smell it or are having any reaction. Something is causing an issue for me. Mold or chemicals are the only two things I can think of. I will add that pollen counts is really high outside and also inside.

Thanks
Rick

On 2018-05-17 by (mod) - sweeping the air for mold will never fix a mold problem

"Sweeping" ?? Do you mean running an air cleaning machine?

Using an air cleaning machine to "sweep" mold is as effective in removing an indoor mold contamination problem as standing in the kitchen, waving a vacuum cleaner wand in the air and then claiming that you have successfully cleaned the dust bunnies from under the living room couch.

Effective mold cleanup means

Find the mold-contaminated surfaces and materials

Clean surfaces that can be cleaned, dispose of materials that can't be cleaned (like wet drywall, carpets, insulation)

Fix the cause of the mold growth

Air tests are fundamentally unreliable for this purpose

On 2018-05-17 by rick

We had a water leak in our roof. By the time the remediation company came and did the cleanup it was almost a month. They did find significant mold on the wall in our living room. The set up a clean area and dried.

Then ran a sweeper for two days.

Then the air test was performed. The inside contained area was raw 20 and 894 spores/m3. Outside was 15 671. I also had them do the non contained area of the living room. It was count 2 and 89/sporesm3.

The mold was Penicillum/Aspergillus. They told me the count was fine based on an overall count including all mold and pollen. My concern is the Penicillum/Aspergillus was high after two days of sweeping.

My daughter and I both have serious mold issues and this is one of the more dangerous molds for us. After two days of sweeping I would have expected the count to be extremely low in a contained area.

There was only one other mold found. Basidiospore and that count was only 1. Why wouldn't the Penicillum/Aspergillus also be that low in a contained area that has been swept unless they had not thoroughly cleaned it.

On 2018-04-30 by (mod) -

Dan K

First check my note to Diane given below.

Then review the mold levels in the article above.

I also suggest taking a look at AIR TEST FOR MOLD: ACCURACY - inspectapedia.com/mold/Mold_Test_Accuracy.php

From the article above on this page I excerpt these

Example mold levels:

Aspergillus/Penicillium in a "clean" residential building study was at a mean of 230,

Aspergillus/Penicillium in buildings known to have a moisture or flooding problem it was at 2235

Aspergillus/Penicillium in mold contaminated buildings the figure was 36,037.

Also see MOLD EXPOSURE STANDARDS https://inspectapedia.com/mold/Mold-Exposure-Standards.php to see what "acceptable mold level" standards have been recommended by different authorities, experts, and governments, world-wide.

On 2018-04-30 by Dan kresky

What is the number of spores count acceptable in a single-family home kitchen? Or what is the average number of spores count in most homes? That's an acceptable level I mean.

...

Continue reading at AIRBORNE PARTICLE & MOLD COUNT NUMBER GUIDE or select a topic from the closely-related articles below, or see the complete ARTICLE INDEX.

Or see AIRBORNE MOLD COUNT NUMBER FAQs-6 - more recent Q&A about interpreting mold air test reports and counts.

Or see these

Mold Count & Mold Level Articles

• ACCEPTABLE MOLD LEVEL
• ACCURACY OF AIR TESTS for MOLD
• AIRBORNE MOLD SPORE COUNT GUIDE - home
• AIRBORNE PARTICLE LEVELS vs IAQ - home
• AIRBORNE MOLD COUNT VALIDITY
• AIRBORNE PARTICLE COUNT VARIATION CAUSES
• AIRBORNE PARTICLE COUNT VARIATION EXTENT
• AIRBORNE MOLD SPORES CONCENTRATION BURSTS
• COUNT VARIATION - INDOOR vs OUTDOOR SPORES
• AIRBORNE PARTICLE COUNT VARIATION EXTENT
• FALSE NEGATIVE MOLD TEST RESULTS
• MOLD CULTURE TEST ERRORS
• AIRBORNE PARTICLE COUNTS in DUCTWORK
• AIRBORNE PARTICLE COUNTS vs SAMPLER HEIGHT
• AIRBORNE PARTICLE COUNTS vs WINDOWS, DOORS
• USES of AIRBORNE PARTICLE SAMPLING
• VISUAL INSPECTION & HISTORY of MOLD
• AIRBORNE MOLD COUNT VALIDITY
• MOLD CLEARANCE INSPECTIONS
• MOLD LEVELS IN BUILDINGS
• MOLD EXPOSURE RISK LEVELS

Suggested citation for this web page

AIRBORNE MOLD COUNT NUMBER FAQs-5 at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

Or see this

INDEX to RELATED ARTICLES: ARTICLE INDEX to MOLD CONTAMINATION & REMEDIATION

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