Angstrom Testing Services, LLC

10/17/2026

What Happens After a Mercury Thermometer Breaks?

A broken household mercury thermometer may release only a small amount of liquid mercury, but residual droplets can continue producing mercury v***r if they remain in cracks, flooring, furniture, or other hidden areas.

In this residential case, Angstrom Testing Services performed mercury v***r testing after cleanup to evaluate whether elevated v***r remained and whether additional action was necessary.

Read the full case study:
https://angstrommold.com/case-studies/mercury-v***r-testing-broken-thermometer/

Concerned about a mercury spill or residual mercury v***r? Learn more about our mercury v***r testing services:
https://angstrommold.com/mercury-v***r-air-testing/

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See how Angstrom used NIOSH Method 6009 and repeat air sampling to evaluate mercury v***r after a broken thermometer in a Westchester County home.

10/17/2026

Water Damage Can Leave More Than Visible Damage Behind

Following a significant residential water intrusion, Angstrom Testing Services performed an independent environmental assessment to evaluate conditions after water-damaged building materials had been disturbed.

Laboratory testing identified elevated levels of lead, asbestos fibers, and crystalline silica in settled dust, along with elevated airborne mold in an affected basement area. Follow-up testing helped further define the extent of contamination throughout the home.

This case illustrates why environmental testing can be important after significant water damage—particularly in older buildings where damaged plaster, coatings, insulation, and cementitious materials may contain hazardous constituents.

Read the full case study:
https://angstrommold.com/case-studies/lead-and-asbestos-dust-testing-after-water-damage-a-residential-case-study/

Angstrom Testing Services LLC provides independent environmental testing and industrial hygiene consulting throughout New York City, Long Island, Westchester, New Jersey, and Connecticut.

(516) 724-4574
angstrommold.com

Residential case study · Water-damage repair

09/20/2026

A relatively low mold air sample does not necessarily rule out localized mold growth.

Angstrom recently investigated visible mold and moisture conditions in an apartment washer/dryer closet. The assessment documented visible mold growth and elevated moisture in affected building materials. Air sampling did not indicate widespread airborne mold amplification at the time of sampling, but the visible conditions and moisture findings still warranted corrective action and further source investigation.

During subsequent remediation performed by others, the affected wall was opened and the drain piping was exposed. A leak in the washer wastewater drain was then confirmed as the source of the moisture intrusion.

This case illustrates why mold assessments should consider the complete picture — visual observations, moisture measurements, building conditions, sampling results, and identification of the underlying moisture source.

Read the full case study:
https://angstrommold.com/case-studies/mold-after-washer-drain-leak/

Angstrom Testing Services LLC provides independent mold assessment and environmental testing throughout NYC, Long Island, Westchester, New Jersey and Connecticut.
516-724-4574 | angstrommold.com

09/20/2026

Angstrom Testing Services LLC provides independent environmental testing and consulting throughout New York City, Long Island, Westchester, New Jersey and Connecticut.

Services include mold inspection and testing, indoor air quality investigations, asbestos and lead testing, water testing, VOC and formaldehyde testing, crystalline silica testing, Legionella testing and other specialty environmental assessments.

Angstrom does not perform remediation or abatement, helping clients obtain objective, independent findings and recommendations.

Learn more: https://angstrommold.com/
Call: 516-724-4574