In controlled environments, PPE selection is not only about impact hazards. It is also about reducing operator behaviors that drive contamination (face touching, frequent adjustments, discomfort-driven removal) and ensuring PPE integrates with hoods, masks/veils, and head coverings. A lightweight, stable-fit eyewear choice can reduce re-adjustment and support better gowning discipline across shifts.

Nemesis VL (code 20470) is a frameless safety eyewear option with a clear polycarbonate lens and gunmetal frame/temples, specified at VLT 90%. The manufacturer specification lists an impact-resistant polycarbonate lens, base curve 8, frameless construction, and ratcheted temples.

• No-brow design: increases upward peripheral vision and limits interference with hard-hat suspension systems.
• Frameless = lighter weight: helps reduce discomfort-driven removal and re-adjustment.
• Clear lens visibility: VLT 90% supports indoor inspection and documentation tasks.
• Standardized protection: ANSI Z87.1:2010 listed on the manufacturer specification.

Manufacturer specification lists: polycarbonate lens, nylon frame/temple, and an Empilon nosepiece, with a frameless design and ratcheted temples.

The manufacturer brochure positions Nemesis VL as a frameless option and describes the no-brow geometry as a way to improve upward peripheral vision.

Attribute	20470 (Nemesis VL)	Why it matters
Lens / VLT	Clear; VLT 90%	Supports high-visibility indoor tasks and reduces “dim lens” fatigue.
Frame / format	Gun Metal; frameless; ratcheted temples	Stability and comfort reduce adjustment frequency (contamination behavior driver).
Base curve	8	Wraparound geometry improves peripheral coverage and integration with headwear.
Materials	Polycarbonate lens; nylon frame/temple; Empilon nosepiece	Material selection affects durability and compatibility with cleaners/disinfectants.
UV protection	99.9% UVA/UVB/UVC protection	Useful for mixed lighting environments and general operator eye protection.
Standard	ANSI Z87.1:2010	Baseline standard reference for industrial eye protection selection.
Arc flash / IRUV	Arc flash rated: No; IRUV rated: No	Do not substitute for specialized arc-flash or IRUV-rated eyewear requirements.
Packaging	Selling unit: 12 pairs	Supports standardized deployment to a line, shift, or gowning station.

Safety glasses are often re-used across shifts. In cleanrooms, that means the risk shifts from “impact hazard” to “handling contamination”: lenses and temples become touchpoints, and repeated adjustments are a common source of contamination transfer.

• Dedicate or segregate: keep eyewear clean-dedicated or segregated by room/classification when required.
• Control touchpoints: handle by temples; avoid touching lens and face-contact areas.
• Qualified cleaning: validate cleaner/disinfectant compatibility with polycarbonate and any coatings per your SOP.
• Reduce “adjustment frequency”: comfort and fit are contamination-control variables, not just ergonomics.

Manufacturer specification lists code 20470 (former code 3013536) with a clear lens and gun metal frame/temples and identifies VLT and key construction attributes. For receiving, align the delivered label/part number to your approved vendor list, then confirm the correct lens type and configuration for the area in which eyewear will be used.

European Annex 1 (sterile manufacturing) overlay: Annex 1 explicitly calls out sterile eye coverings (e.g., goggles) and sterile masks for Grade B/Grade A access, and it emphasizes gown integrity checks, donning technique (avoid contacting the outer surface), and preventing garments from touching the floor. If your operation is Annex 1-governed, confirm whether your SOP requires sterile goggles/eye coverings rather than non-sterile safety glasses for Grade A/B behavior and interventions.

• Repeated adjustments: drives face-touching and glove contamination transfer.
• Fogging without a plan: if fog is common, select an anti-fog SKU or adjust mask/hood integration per SOP.
• Poor integration with hood/mask: creates gaps that force rework mid-process.
• Unqualified cleaning chemistry: can haze polycarbonate or degrade surfaces; qualify before routine wipe-down.

• 29111 Clear Anti-Fog: for mask-driven fogging and humidity transitions.
• 29112 Indoor/Outdoor: for frequent indoor/outdoor transitions (lower VLT than clear).
• Sealed goggles / sterile eye coverings: when your SOP or sterile-grade standard requires enclosed eye protection.

20470 is a strong fit for controlled-environment support work and lab/industrial settings that need clear-lens visibility and standardized impact-rated protection, especially where lightweight comfort reduces adjustment frequency. For Annex 1 Grade A/B aseptic operations, confirm whether sterile eye coverings are required; if so, select the sterile goggle/eye-covering solution specified by your gowning SOP.