Why eyewear matters in contamination-control culture
In controlled environments, the most expensive contamination events frequently start with simple, repeatable behaviors: face-touching, repeated PPE adjustments, and inconsistent gowning steps.
Eye protection is not just “safety gear”—it is also a behavioral control point. If eyewear is uncomfortable or interferes with other PPE, operators adjust it more often, increasing contact and shedding risk.
The Nemesis VL design is positioned to support wear compliance with a frameless/no-brow style and an Indoor/Outdoor tint for facilities that move between lighting conditions.
What this product is used for
- General industrial eye protection in laboratories, technical work areas, and production support spaces.
- Controlled-environment support zones (staging, gowning, warehouses) where your SOP permits reusable eyewear.
- Indoor/outdoor transitions where a universal tint helps reduce glare (not a photochromic “transition lens” unless specified by your procurement spec).
Why customers consider this SKU
- Indoor/Outdoor lens (VLT 50%): a practical tint for mixed lighting conditions.
- Frameless design: lightweight format intended to improve long-wear compliance.
- Documentable specifications: manufacturer datasheet lists lens type, materials, standards, and storage guidance.
- Program standardization: SOSCleanroom is expanding the Ansell/KleenGuard portfolio to support consolidated PPE programs across sites.
Materials and build (manufacturer basis)
Manufacturer technical information describes: polycarbonate lens, nylon frame/temples, and an elastomeric nosepiece.
This SKU is listed as frameless with an Indoor/Outdoor lens tint and 50% visible light transmittance (VLT).
UV protection is described as 99.9% UVA/UVB/UVC.
Specifications in context (what receiving and EHS care about)
| Attribute |
29112 (Nemesis VL Indoor/Outdoor Uncoated) |
| Product code / SKU |
29112 |
| Lens |
Indoor/Outdoor tint; uncoated |
| Visible Light Transmittance (VLT) |
50% |
| Frame / temples |
Gun metal |
| Materials |
Polycarbonate lens; nylon frame/temples; elastomeric nosepiece |
| Design |
Frameless |
| Standards (datasheet basis) |
ANSI Z87.1 (datasheet edition stated); EN 166:2001 (applies to 29112 per datasheet) |
| UV protection |
99.9% UVA/UVB/UVC |
| Selling unit on SOSCleanroom |
Case/12 glasses |
| Manufacturer pack reference |
12 pair/box; 12 boxes/case (master pack reference) |
| Storage (manufacturer guidance) |
Cool, clean, dry space away from direct sunlight |
Cleanroom donning (gowning) guidance — ISO first
ISO 14644-5 (Operations) frames cleanroom performance around an operations control programme, including personnel management, training, and a gowning programme.
The practical point: your eyewear must fit into a repeatable donning sequence that minimizes adjustment after gloves are donned.
Technique template (adapt to your SOP): reducing contamination from eyewear handling
- Stage eyewear clean: store in a clean container; verify lenses are clear and free from residue/film that would trigger mid-process adjustments.
- Don before final glove step (common approach): after hair/hood and mask are secure, place eyewear and confirm fit before final sterile glove donning (site dependent).
- One-and-done fit check: set temples/nose fit once. Avoid repeated repositioning after you cross the gowning boundary.
- Control fogging at the source: if fogging causes frequent adjustments, consider an anti-fog variant or goggles per SOP rather than “living with it.”
European Annex 1 overlay (sterile manufacturing expectations)
EU GMP Annex 1 emphasizes contamination prevention through facility design, change rooms (airlock behavior), personnel training/qualification, and a facility-wide contamination control strategy.
If Annex 1 expectations apply to your operation, define eyewear rules explicitly: where reusable eyewear is permitted, how it is cleaned/transferred, and how operators are trained to prevent repeated face-touching and PPE adjustment.
Cleaning and reuse considerations
- Avoid residue that drives re-touching: use a facility-approved cleaner that does not leave film; rinse/finish per your SOP.
- Lens safety: harsh chemistries or aggressive wiping can reduce visibility or damage lenses over time. Replace eyewear when visibility degrades.
- Controlled storage: store in a clean, dry container away from particulates and direct sunlight (manufacturer storage guidance).
Common failure modes (and how to prevent them)
- Frequent adjustment after gloving: fix fit/comfort in the gowning step; switch variants if needed.
- Fogging drives face-touching: consider anti-fog eyewear or goggles per SOP.
- “Cleanroom drift”: eyewear stored on uncontrolled surfaces becomes an uncontrolled contamination source. Use controlled storage.
Closest alternatives
- Nemesis VL Clear Uncoated (for maximum visibility): where glare control is not needed.
- Nemesis VL Clear Anti-Fog: if fogging increases adjustment behavior and contamination risk.
- Cleanroom/aseptic programs: sterile single-use goggles or validated reusable goggles may be required (SOP/Annex 1 dependent).
Critical environment fit
This product is typically selected for industrial, laboratory, and controlled-environment support zones.
If your process involves high-grade aseptic zones (e.g., Annex 1 Grade A/B interfaces), qualify eye protection and cleaning/transfer steps formally as part of your contamination control strategy and gowning SOP.
SOSCleanroom note about SOPs
The Technical Vault is written to help customers make informed contamination-control decisions and improve handling technique.
It is not your facility’s Standard Operating Procedure (SOP), validation protocol, or regulatory commitment.
Customers are responsible for defining PPE selection, donning sequence, cleaning methods, storage controls, and training requirements based on their cleanroom classification, process risk, and applicable standards/regulations.
Source basis
- SOSCleanroom product page (29112): https://www.soscleanroom.com/product/apparel/kleenguard-nemesis-vl-safety-glasses-indoor-outdoor-uncoated-case-12/
- Manufacturer technical datasheet (V30 Nemesis VL; includes code 29112; Rev May 2013): https://exdron.co.il/Exdron-Pdf/kimberly-clark-29112-datasheet.pdf
- KleenGuard / Ansell product listing (29112) for current positioning and guides: https://kleenguard.ansell.com/us/en/products/kleenguard-nemesis-vl-safety-glasses-29112
- ISO 14644-5 (Operations) context: https://www.iso.org/standard/88599.html
- EU GMP Annex 1 (sterile manufacture; personnel/gowning context): https://health.ec.europa.eu/system/files/2022-08/20220825_gmp-an1_en_0.pdf
SOSCleanroom is the source for this Technical Vault entry.
Briefed and approved by the SOSCleanroom (SOS) staff.
If you have any questions please email us at Sales@SOSsupply.com
Last reviewed: Jan. 14, 2026
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