Environmental screening
ATP Environmental Screening, rapid biological residue insight.
Rapid on-site measurement of organic and microbial residue using the Hygiena SystemSURE Plus luminometer with UltraSnap surface swabs, an added science input during moisture, water damage, sewage, mold, HVAC, and indoor environmental quality investigations.
RLU · Relative Light Units
127
Result in 15 seconds
About ATP screening
ATP screening uses a bioluminescence assay in which luciferase reacts with adenosine triphosphate (ATP) from living or recently living organic material to generate a rapid Relative Light Unit (RLU) reading of environmental biological residue levels. Because ATP testing measures total biological residue rather than targeting a single organism, it can help identify elevated organic contamination and hygiene concerns that may not be visible during a standard visual inspection.
In Florida's humid environment, chronic condensation, elevated humidity, plumbing leaks, HVAC system moisture, and water intrusion conditions can contribute to persistent biological buildup and biofilm development on building materials and environmental surfaces, even when surfaces appear visually clean.
PureSpec Environmental utilizes the Hygiena SystemSURE Plus luminometer with UltraSnap ATP surface testing technology as part of select environmental assessments, remediation quality assurance, HVAC hygiene evaluations, water damage investigations, and post-remediation verification support. ATP screening can assist in evaluating whether cleaning efforts effectively reduced biological residue levels on impacted surfaces and building materials and may help identify heavily impacted or unsanitary conditions consistent with significant environmental contamination, including conditions that may be associated with Category 2 or Category 3 water damage when interpreted together with source characteristics, moisture conditions, visual observations, and site history.
ATP testing is not intended to identify mold species, bacteria species, viruses, or specific pathogens, and it is not a substitute for mold-specific environmental testing methods such as air sampling, ERMI, HERTSMI-2, or laboratory microbial analysis when mold characterization is required. ATP screening is most appropriately utilized as an environmental hygiene and biological residue screening tool within a broader building science and environmental assessment process.
Method
Three steps. Fifteen seconds. One numeric output.
ATP, the energy molecule present in every living cell and in the residue cells leave behind, reacts with luciferase inside the UltraSnap swab to emit light. The SystemSURE Plus luminometer quantifies that light as Relative Light Units (RLU).
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01
Swab
An UltraSnap single-use swab is wiped across a defined surface area, typically a 10×10 cm template, with photo and location documented.
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02
React
The reagent chamber is snapped, releasing luciferase that reacts with recovered ATP. Light is emitted in proportion to the ATP present.
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03
Measure
The Hygiena SystemSURE Plus luminometer integrates the photonic output and reports an RLU value within fifteen seconds.
When ATP screening adds value
Used during complex environmental investigations.
ATP screening is one tool inside a multi-method assessment. It is most useful when the question is: is there still organic or microbial residue on this surface beyond expected background? Common situations include:
Water damage investigations
Helps differentiate clean-water exposure from secondary microbial colonization after a plumbing, roof, or appliance event.
Central Florida coverage
Where I perform ATP environmental screening.
Suspected sewage or drain contamination
Sink, disposal, or drain-line incidents where organic residue may persist after surface cleaning.
Mold and microbial assessments
Flags biologically active areas worth investigating further alongside moisture data and lab analysis.
HVAC hygiene evaluations
Coil, drain pan, plenum, and return-side residue trends inform whether the system is a microbial substrate.
Post-remediation quality assurance
Before clearance sampling, confirms that surface cleaning achieved expected residue reduction.
Environmental contamination screening
Residue from unknown sources, post-incident cleanup verification, or quantitative claim-file documentation.
Indoor environmental quality concerns
Persistent odor or occupant complaints with no visible source, objective input where there's otherwise only subjective signal.
What ATP measures
A general marker of organic and microbial residue, not a species-level identification.
Elevated readings, particularly above manufacturer reference ranges and above clean-control comparison swabs, may be associated with:
Add-on lab samples available. When the situation calls for species-level identification, supplemental sewage indicator screens, bacterial cultures, or other targeted microbial sampling, those can be added to the same engagement and processed through an accredited lab.
- Organic contamination: food residue, biological soil, body fluids, plant matter.
- Bacterial biofilm: accumulated microbial community on a moist or improperly cleaned surface.
- Moisture-related material degradation: substrate breakdown producing biologically active byproducts.
- Unsanitary environmental conditions: surfaces not adequately cleaned or re-contaminated since cleaning.
- Residual contamination after remediation: cleanup that did not achieve expected hygiene reduction.
Surfaces screened
Materials commonly evaluated.
ATP works best on accessible non-porous and semi-porous surfaces. Heavily porous materials are interpreted with caution.
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Drywall
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Cabinet interiors
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HVAC systems
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Flooring
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Wood framing
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Drains / disposals
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Non-porous & semi-porous
Scope statement · Please read
What ATP screening is, and what it is not.
ATP testing is an environmental screening tool only. It does not identify specific pathogens, mold species, bacteria species, viruses, or medical conditions. ATP results should not be used independently to confirm sewage contamination, mold contamination, Category III water, or health risk. Results are interpreted as part of the overall environmental assessment.
PureSpec Environmental performs environmental assessment and testing only. We do not diagnose, treat, or provide medical advice.
Why our approach
A microbiologist’s approach to environmental screening.
As a microbiologist and Florida-licensed Mold Assessor, PureSpec uses ATP testing as part of a science-driven environmental assessment approach, the same Hygiena SystemSURE Plus / UltraSnap platform used by professional food-safety auditors, hospital infection-control teams, and accredited environmental investigators, brought into the field as part of a complete inspection.
The inspector
Daniel Melendez
Founder · Lead Inspector
- License
- MRSA #4575
- Certifications
- ACAC CMI · NAERMC CMH · NAERMC Green IAQ · Pathways™
- Education
- B.S. Microbiology
- Background
- Former lab analyst
Why a microbiologist
A microbiologist with a lab background, not a contractor with a weekend course.
Most Florida mold inspectors learned the trade in a weekend course. Daniel holds a Bachelor of Science in Microbiology and worked as an environmental laboratory analyst, the person other inspectors ship their samples to, before founding PureSpec.
He reads spore counts, growth patterns, and species behavior the way the labs that run the analysis do. Every inspection is founder-performed, lab-supported, and assessment-only: Daniel personally walks the property, collects the samples, interprets the lab data, and writes the report.
No subcontractors, no remediation upsell, no kickbacks. Florida law (FS 468.8419) prohibits the same firm from inspecting and remediating, and PureSpec is built around that line.
How an inspection actually works
Nine steps. Same scientific process, every property.
The depth of each step adapts to your situation. HVAC and borescope inspection happen when conditions warrant. Sampling is decided based on what your specific environment is asking, not a fixed checklist.
- 01
Consultation
We talk through what you’re seeing, the building, and the question you need answered. Free, no pressure, no upsell.
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Visual inspection
Daniel personally walks every accessible space. No subcontractors.
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Moisture mapping
Pin and pinless moisture meters identify elevated wall, floor, and substrate moisture invisible to the eye.
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Thermal imaging
Infrared imaging surfaces temperature differentials that often correlate with hidden moisture or insulation gaps.
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HVAC evaluation
Coil, plenum, return, and ductwork assessment. The #1 hidden vector for indoor mold in Florida buildings.
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Targeted sampling
Air, surface, swab, ERMI, HERTSMI-2, mycotoxin, Pathways™, VOC, or formaldehyde, only the tests your situation warrants.
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Lab analysis
Samples sent to AIHA-LAP-accredited third-party laboratories. Results returned within 24 to 72 hours of receipt.
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Written report
Plain-English report with photos, lab data, moisture readings, observations, and clear next steps. Built to hold up with insurers, lenders, healthcare providers, and counsel.
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Remediation protocol when warranted
If the report identifies remediation-grade mold, Daniel writes the IICRC S520-aligned remediation protocol, scope, containment, methods, and clearance criteria, that the remediation contractor works to. Florida law prohibits the same firm from inspecting and remediating, so the protocol stays independent of the work crew.
FAQ
ATP screening, questions answered.
What is ATP environmental screening?
ATP environmental screening is a rapid on-site test that quantifies adenosine triphosphate, a marker of organic and microbial residue, on building surfaces. PureSpec uses the Hygiena SystemSURE Plus / SureTouch luminometer with UltraSnap surface swabs to produce a numeric Relative Light Units (RLU) reading in fifteen seconds. It is an environmental screening tool, not a pathogen or species identification test.
Does ATP testing identify mold species or pathogens?
No. ATP testing does not identify specific mold species, bacterial species, viruses, or pathogens. It is a general indicator of biological residue. Species-level identification requires accredited laboratory analysis through direct microscopy, culture, or qPCR-based methods such as ERMI or HERTSMI-2.
When is ATP screening appropriate?
ATP screening adds value during water damage investigations, suspected sewage or drain contamination, mold and microbial assessments, HVAC hygiene evaluations, post-remediation quality assurance, environmental contamination screening, and indoor environmental quality concerns. It works best as an additional input alongside moisture mapping, thermal imaging, visual inspection, and laboratory analysis.
Can ATP results confirm sewage or mold contamination on their own?
No. ATP results should not be used independently to confirm sewage contamination, mold contamination, Category III water, or health risk. ATP is interpreted as part of the overall environmental assessment alongside source characterization, moisture data, visual evidence, and lab analysis where applicable.
What surfaces can be tested with ATP swabs?
Common surfaces include drywall, cabinet interiors, HVAC components (coil, drain pan, plenum, ductwork), flooring materials, wood framing (with porosity considerations), drain and disposal areas, and a wide range of non-porous and semi-porous building materials. Heavily porous surfaces are interpreted with caution due to known ATP recovery limitations.
How long does an ATP test take?
Each individual ATP test takes approximately fifteen seconds from swab activation to RLU readout on the Hygiena SystemSURE Plus luminometer. Total assessment time depends on the number of sampling locations selected based on the inspection scope.
FAQ
ATP screening, questions answered.
FAQ