ANSI/AHAM AC-5
The workbook maps ANSI/AHAM AC-5 to gas-phase CADR.
AlignedStandards
CADR Gas Phase: ANSI/AHAM AC-5
Scoping guidance for gas-phase room air cleaner chamber studies assigned to ANSI/AHAM AC-5.
Use this cluster when VOC removal claims require chamber decay data, controlled gas delivery, analytical confirmation, and clear documentation of the limits around the assigned AHAM citation.
Standard roster
Individual standards in this cluster
ANSI/AHAM AC-5 is the assigned workbook citation; ARE Labs maps it to chamber setup review, natural decay baselining, gas challenge controls, analytical checks, and report limits.
Purpose & when to use
Gas-phase CADR studies estimate how quickly a room air cleaner reduces selected gaseous contaminants in a controlled chamber. This cluster helps scope VOC removal or gas-reduction work when the workbook assigns ANSI/AHAM AC-5. The protocol should keep EPA indoor air quality context, ISO 17025 quality records, and AHAM source notes visible so the study design, data, and citation limits remain traceable:
- Room air cleaner programs use EPA IAQ context and AHAM chamber framing when VOC reduction claims need controlled decay evidence.
- Gas challenge studies use ISO 17025 quality records to connect MFC settings, natural decay, calibration references, and concentration data.
- Hybrid filtration devices use EPA and AHAM context when sorbent, catalyst, UV, or ionization behavior may affect gas removal.
- Claim reviews use ISO 17025 documentation discipline to separate workbook-assigned ANSI/AHAM AC-5 alignment from verified chemical-gas standards.
Use this page when the study question is gas removal in a room-scale chamber. The citation path needs careful review because official AHAM source pages do not identify AC-5 as the chemical-gas method.
Applicable to
Built for gas-removal chamber decisions
The cluster applies when device operation, chamber background, gas generation, sampling timing, and analytical confirmation determine whether VOC removal evidence is usable.
Standards in this group
What each citation controls
The workbook assigns ANSI/AHAM AC-5 to gas-phase CADR. ARE Labs treats that as one AHAM chamber-decay citation with two operational notes: the CADR study frame and the VOC claim cross-check. Official source notes flag that current AHAM and ANSI pages describe AC-5 as bioaerosol reduction, not chemical-gas reduction.
AHAM / ANSI
AlignedANSI/AHAM AC-5
Method for Assessing the Reduction Rate of Key Bioaerosols by Portable Air Cleaners Using an Aerobiology Test Chamber
The workbook maps ANSI/AHAM AC-5 to gas-phase CADR. ARE Labs uses the assignment only as an AHAM chamber-reduction frame for setup review, natural decay baselining, device operation, VOC claim cross-checks, and source-conflict notes until the chemical-gas citation is confirmed.
ANSI official webstore page verified 2026-05-17; it lists AC-5-2023 as bioaerosols. AHAM AC-4 chemical-gas page also reviewed at https://www.aham.org/ItemDetail?Category=PADSTD&iProductCode=42022, creating a source conflict for SG06.
Aligned citation, documented limits
This page does not claim formal accreditation for ANSI/AHAM AC-5. ARE Labs treats the assigned citation as aligned by protocol, supports ISO 17025-style records where applicable, and records EPA or AHAM source context without implying certification.
- ANSI/AHAM AC-5AlignedWorkbook-assigned citation followed with explicit source limits.
- ISO 17025 QAAlignedQuality records used without per-standard accreditation claims.
- EPA IAQ contextAlignedClaim context considered without regulatory approval language.
Operational chain
How ARE Labs turns the standards into a study
ARE Labs converts the assigned AHAM frame, EPA claim context, and ISO 17025 quality expectations into a chamber protocol that states what is standard-aligned, what is adapted, and what evidence the client receives.
01
Configuration
Define the chamber and device setup
The protocol maps ANSI/AHAM AC-5 assignment and EPA IAQ claim context to chamber size, mixing, sampling locations, device placement, and operating mode.
Protocol setup02
Challenge
Control gas generation
ISO 17025 records tie permeation tubes, certified gases, or MFC delivery to target concentration, stabilization time, and background checks.
Gas setup log03
Operation
Separate natural and device decay
AHAM chamber framing and EPA claim context preserve natural decay baselines, device-on decay runs, temperature, humidity, timing, and operating-state records.
Run record04
Analytics
Confirm gas or by-product data
EPA claim context and ISO 17025 documentation guide FTIR, GC/MS, HPLC, sensor, or other analytical confirmation when the study requires it.
Analytical file05
Reporting
State citation limits
Reports identify ANSI/AHAM AC-5 alignment, EPA claim context, the AC-4 source conflict, deviations, CADR calculations, and interpretation limits.
Review-ready reportData quality, QA/QC & documentation
Gas-phase chamber work depends on a traceable setup and careful citation handling. ARE Labs links AHAM alignment, EPA claim context, and ISO 17025-style documentation to raw instrument files, chamber condition logs, calibration records, calculation workbooks, and notes that explain the conflict between the assigned citation and official sources.
Connect setup to citation
ANSI/AHAM AC-5 assignment, EPA claim context, AHAM source notes, chamber configuration, gas delivery path, and sampling locations are retained.
Preserve gas delivery records
ISO 17025 files capture MFC checks, gas certificates, permeation settings, instrument calibration, and any analytical method references.
Separate background and removal
EPA claim context and AHAM-style chamber records keep background, natural decay, device operation, conditions, and run timing visible.
Retain target gas evidence
EPA claim context guides FTIR, GC/MS, HPLC, sensor, or other analytical outputs for target gas and by-product confirmation.
Document citation limits
ISO 17025 review notes distinguish aligned ANSI/AHAM AC-5 use, AHAM AC-4 source conflict, deviations, and report limitations.
Why ARE Labs
ARE Labs connects technical topics to practical study design, method selection, controlled aerosol work, and reportable evidence without turning technical pages into sales pages.
Reviewed byJamie Balarashti - Weston Schaper
QualityDocumented study records
900+Studies Performed
17+Years in operation
300+Clients supported
Common questions
These questions help air cleaner, filtration, and indoor-air-quality teams scope gas-phase CADR work when the workbook assigns ANSI/AHAM AC-5, while official AHAM source pages identify a different citation for chemical-gas testing. The answers cover citation posture, test evidence, reportable outputs, and the source review needed before the protocol is finalized.
Q. Is AC-5 a gas method?
A. The workbook assigns ANSI/AHAM AC-5 to this page, but official ANSI and AHAM pages describe AC-5 as a bioaerosol chamber method. AHAM's chemical-gas reduction page instead points to AC-4.
Q. How is the conflict handled?
A. ARE Labs can scope the study with clear source notes, protocol alignment language, and report limitations. The final test plan should confirm which approach - AC-4, AC-5, or a fit-for-purpose method - is appropriate for the proposed claim.
Q. Does ARE Labs certify CADR claims?
A. No. ARE Labs performs chamber testing and documentation. AHAM certification, regulatory approval, or product listing requires review by the applicable program or authority.
Q. What data does the client receive?
A. The report typically includes background data, natural decay curves, device-on decay curves, chamber conditions, gas delivery records, analytical confirmation, CADR or removal-rate calculations, deviations, and source notes.
Q. Can by-products be measured?
A. Yes, when required by the protocol. ARE Labs can add FTIR, GC/MS, HPLC, sensor, or other analytical checks to measure target-gas reduction and evaluate possible by-product formation.
Related services & devices
Related services & devices
Service
Clean Air Delivery Rate (CADR)
Primary route for chamber decay studies, CADR calculations, and room air cleaner performance evidence.Read more ->ServiceGas Delivery & Control
Builds repeatable gas challenges with MFCs, permeation systems, and concentration verification.Read more ->ServiceVOC & By-Product Emissions
Adds target VOC, aldehyde, ozone, or by-product measurement around air treatment operation.Read more ->ServiceGas & VOC Destruction / Removal
Supports removal-rate, destruction, adsorption, and catalytic performance studies for gas-phase contaminants.Read more ->ServiceAir Device Safety Panel
Screens air treatment devices for emissions or by-products that may affect claim language.Read more ->ServiceComputational Fluid Dynamics
Models chamber flow, mixing, and device placement questions that can affect gas decay studies.Read more ->DevicesPortable Room Air Purifiers
Room-scale devices where gas removal, CADR, emissions, and operating mode converge.Read more ->DevicesWhole-Room Air Cleaners
Larger air cleaning systems that may need scaled chamber setup and mixing controls.Read more ->DevicesFilter Media & Standalone Filters
Sorbent, catalytic, or hybrid filters tied to gas reduction and breakthrough questions.Read more ->DevicesIn-Line Duct Air Treatment
Ducted devices where flow, residence time, and gas challenge control drive protocol design.Read more ->Related clusters
Related standards clusters
Gas-phase CADR work often connects to particulate CADR, emissions background control, calibrated gas delivery, and sorbent breakthrough questions. These neighboring clusters keep the citation logic separated by decision type.
Standards - Planned