Room-scale far-UVC study
Used as background reading for far-UVC research in occupied-room models.
Open source ↗RESEARCH & SAFETY
Evidence,
with its limits visible.
Manufacturer specifications and internal T3 readings are now available. This page keeps them separate from published research, independent testing and the evidence still needed before launch.
HOW TO READ THIS PAGE
Research about a wavelength is not automatically proof about a product.
Published studies can explain scientific mechanisms and research context. Product claims require evidence from the final hardware, optical filter, operating cycle and test conditions. Until those reports are supplied and reviewed, FarSafe-specific results are marked as pending.
This distinction is intentional: it keeps scientific context useful without presenting third-party research as a completed product validation.
CLAIM-TO-EVIDENCE REGISTER
What supports each statement.
Only verified information should replace the pending fields below.
| Topic | Current statement | Evidence status | Required before launch |
|---|---|---|---|
| 222nm research context | Filtered 222nm far-UVC is being researched for occupied-space applications within controlled exposure limits. | Published context | Named technical reviewer and an approved summary tied to the cited literature. |
| Optical filtration | Multilayer filtration can reduce residual emissions outside a target band. | Published context | FarSafe spectrum report, instrument details, calibration date and unfiltered/filtered comparison. |
| FarSafe irradiance | Internal 1 October T3 test: 35.8µW/cm² horizontal and 34.2µW/cm² vertical, on-axis at 10cm after four hours of operation. | Internal readings | Independent report, instrument calibration, test geometry, uncertainty, device serial number and final-production confirmation. |
| Microbial inactivation | Far-UVC energy can produce photochemical changes in microbial biomolecules. | Published mechanism | Product-specific laboratory reports listing organisms, dose, time, distance, conditions and measured reduction. |
| Human and animal exposure | No FarSafe-specific safety or long-term exposure claim is currently published. | Pending evidence | Risk assessment, exposure-control design, applicable standards, test reports and approved claim language. |
| Regulatory status | The manufacturer describes T3 as consumer lighting. No FCC, UL, CE or other certification has been supplied; specification requirements are not certificates. | Not certified here | North American and European classification review, final certificates and approved claims. |
| T3 specifications | Model, dimensions, battery, charging, control logic and a two-year manufacturer warranty are supplied. | Manufacturer specification | Final approved production specification and regional warranty terms. |
T3-IRR-20261001 · INTERNAL TEST
The readings.
The conditions.
Manufacturer workbook dated 1 October 2026. HP350UV readings at 10cm, after four hours of lamp operation. Placement describes how the circular device was positioned.
- Horizontal, on-axis
- 35.8 µW/cm²
- Vertical, on-axis
- 34.2 µW/cm²
The separate 12 October electrical specification requires >50µW/cm² at 10cm after five minutes, with a full 4.2V battery. That is an engineering requirement under different conditions, not a measured result from this workbook.
| Angle | Horizontal | Vertical |
|---|---|---|
| 0° / on-axis | 35.8 | 34.2 |
| 10° | 34.6 | 33.1 |
| 20° | 33.9 | 36.2 |
| 30° | 35.7 | 39.7 |
| 45° | 38.3 | 40.5 |
| 60° | 29.2 | 26.3 |
Source: “261001_FarSafe照度测试1”, sheet 照度对比, F5:G13. Calibration, uncertainty and sample identification were not provided. These values do not establish treatment area, microbial reduction or safe exposure.
How the evidence is handled
Measured readings are shown separately from engineering targets and calculated biological examples. The workbook’s eight-hour dose cells omit a factor of 60 and use inconsistent unit labels; its “safe” annotations are therefore not adopted. A calibrated full-spectrum risk assessment remains necessary.
The manufacturer reports a 220.4nm peak, but has not supplied the underlying spectrum. The 222nm designation remains nominal; a unit-specific wavelength tolerance has not been verified.
PUBLISHED CONTEXT
Sources currently cited.
These papers provide scientific context. They should not be described as tests of FarSafe unless the final product was actually included in the study.
Optical filtration study
Used as background reading for filtered krypton-chloride excimer lamp output.
Open source ↗Why the full spectrum matters
Research on optical filters explains why a single nominal wavelength and an irradiance reading cannot by themselves establish a lamp’s exposure limit.
Open source ↗CURRENT LIMITATIONS
What this site does not claim.
01Not a medical or veterinary deviceFarSafe is not intended to diagnose, treat or prevent disease in animals or humans.
02No occupied-use approvalNo person/pet detector or exposure interlock is specified. Do not direct UV at people or animals. Product-specific occupied-use safety and long-term exposure have not been validated.
03Long-term research continuesLong-term biological effects of continuous far-UVC exposure remain an area of ongoing scientific research.
04No validated area or kill-time claimInternal irradiance readings and literature dose examples do not prove a treatment area, a 99.9% reduction, a specific treatment time or certified production performance.
INDEPENDENT REVIEW
Technical review pending.
The client must appoint an appropriately qualified reviewer and approve the final evidence summaries, limitations and claims before launch.
- Reviewer name
- Client to supply
- Qualifications
- Client to supply
- Review scope
- Client to supply
- Approval date
- Client to supply