Page 452 - PortWest

USA STANDARDS PREMIUM PROTECTION
* = see tables below for more details on U marking (UV filters performances) and L
marking (Visible Light Filters performances)
ANSI Z87.1: Markings Transmittance Requirements for Visible Light Filters :
Marking Meaning Position Scale (Marking) Maximum % Nominal % Minimum %
PW: Portwest Manufacturer identifi cation Frame and lens L1.3 85 74.5 67
Z87 Standard mark Frame and lens L1.5 67 61.5 55
OPTIONAL MARKINGS Meaning Position L1.7 55 50.1 43
Required only when impact rating L2 43 37.3 29
is claimed by the manufacturer
L2.5 29 22.8 18
Z87+ Impact protector Frames used for L3 18 13.9 8.5
an impact-rated
protector are L4 8.5 5.18 3.16
marked with Z87 L5 3.16 1.93 1.18
+ (lenses show
just a “+” symbol) L6 1.18 0.72 0.44
L7 0.44 0.27 0.164
OPTIONAL MARKINGS Meaning Position
Required only when special lens/ L8 0.164 0.1 0.061
use is claimed by the manufacturer
L9 0.061 0.037 0.023
-(no marking) Lens type - Clear
L10 0.023 0.0139 0.0085
W - followed by shade number Lens type - Welding Lens
Transmittance Requirements for Ultraviolet Filters :
U and scale number Lens type - UV Filter Lens
L and scale number Lens type - Visible Light Filter Lens Scale Maximum effective Far-Ultra- Maximum effective Near-Ultra-
R and scale number Lens type - IR Filter Lens (Marking) Violet (200-315nm)Average Violet (325-380nm)Average
transmittance % transmittance %
V Lens type - Variable Tint Lens
U2 0.1 3.7
S Lens type - Special Purpose Lens
U2.5 0.1 2.3
D3 Splash/Droplet Frame
U3 0.07 1.4
D4 Dust Frame
U4 0.04 0.5
D5 Fine Dust Frame
U5 0.02 0.2
U6 0.01 0.1
EUROPEAN STANDARDS
EN 166 : 2001 EN 166 Markings
Personal Eye Protection
MANUFACTURER SYMBOL Lens / Frame / Glasses Goggles Visors
Applying to all types of Visor Holder
individual protection of the eye PW: Portwest
which protects from hazards AF N
likely to damage the eye, except OPTICAL CLASS - AF = Anti-Fog
for nuclear radiation, x-rays, 1: Permanent wear (distortion free) treatment
laser emissions and infrared (corresponds
emitted by low-temperature 2: Occasional wear to N - when the
sources. Does not apply to eye 3: Brief wear
protection for which separate treatment is
standards exist (e.g. anti-laser MECHANICAL RESISTANCE certifi ed by the
eye protection, sunglasses for S: Minimal impact resistance (5,1 m/sec) notifi ed body
general use). and marked on
F: Low energy impact (45 m/sec) the lens).

EN 170 : 2002 B: Medium energy impact (120 m/sec)

European Standard for A: High energy impact (190 m/sec)
Ultraviolet Filters AS K
T: Impact test at extreme temperature (23°F/+131°F) OPTIONAL
Specifies the scale CHEMICAL RISKS (OPTIONAL) - AS =
numbers and transmittance Anti-Scratch
requirements for filters for 3: Resistance to liquid droplets treatment
protection against ultraviolet (corresponds
radiation. 3: Resistance to liquid splashes
to K - when the
4: Resistance to large dust particles (with > 5µm grain size) treatment is
EN 172 European Standard 5: Resistance to gases and fi ne dust particles (with < 5µm grain size) certifi ed by the
for sunglare filters for ELECTRICAL RISKS (OPTIONAL) notifi ed body
industrial use and marked on
8: Short circuit ARC resistance the lens).
Specification for sunglare filters
used in personal eye-protection THERMAL RISKS (OPTIONAL)
for industrial use .
9: Molten metal splashes and hot solids projections

LENS TREATMENTS (OPTIONAL)
K: Resistance to surface damage by fi ne particles (anti-scratch treatment)

N: Resistance to fogging of oculars (anti-fog treatment)
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