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Eye & Face


Standards for eye and face protection:                                                                                                                                                                                                                                         

The employer shall ensure that each affected employee uses appropriate eye or face protection when exposed to eye or face hazards from flying particles, molten metal, liquid chemicals, acids or caustic liquids, chemical gases or vapors, or potentially injurious light radiation.                                                                                                                                             

General Requirements:

EN 166:2001 - Personal eye protection - specifications

Not all types of eye protector are permitted to meet all these requirements. Order of

marking on oculars where relevant:

Scale   Makers Optical Mechanical Fields Scratch Fog Radiant number mark   class   strength of  resist  heat (filters use only)

Scale Number - for oculars with filtering effect only. Higher numbers have a stronger

filtering effect (e.g. are darker for welding).

Scale number consists of a code number and a shade number separated by a

hyphen, except for welding filters which have no code number

Example: an IR filter with shade number 4 has the scale number 4-4.

Welding filters

See EN 169 and

EN 379

shade number between 1.2 and 16. Suffix a denotes filter for use

in gas welding with flux

UV filters

See EN 170

2- or 3- - code number denoting UV filter without or with good

colour recognition respectively, plus;

shade number between 1.2 and 5.

IR filters

See EN 171

4- - code number for IR filters, plus;

shade number between 1.2 and 10.

Sunglare

See EN 172 and

EN 1836

5- or 6- - code number for sunglare filters without and with IR

specification respectively, plus;

shade number between 1.1 and 4.1.

Optical class

1, 2 or 3 - indicates optical quality of the ocular. Class 1 is the best.

Mechanical strength - marked on frames and/or oculars.

S - increased robustness (oculars only)

F - high speed particles, low energy impact (any type)

B - high speed particles, medium energy impact (goggles

and faceshields only)

A - high speed particles, high energy impact (faceshields

only)

Fields of use

Frames

3 - resistant to liquid droplets (goggles), or liquid splashes

(faceshields, but not mesh)

4 - resistant to coarse dust particles

5 - resistant to gas and fine dust particles

9 - resistant to molten metals and hot solids

G - resistant to radiant heat (EN 1731 faceshields only)

Oculars

8 - resistant to short circuit electric arc (faceshields only)

9 - resistant to molten metals and hot solids (goggles and

faceshields only)

Other ocular markings

K - resistant to surface damage by fine particles

N - resistant to fogging

G - resistant to radiant heat (EN 1731 faceshields only)

EN 1731:1998 - Mesh type eye and face protectors

Superseded by EN 1731:2006

Markings (following EN166) are, where applicable, in the order:

Maker’s

mark

EN 1731

Mechanical

strength

Resistant to

radiant heat

Mechanical strength

S, F, B or A - as for EN 166

Resistant to radiant heat

G - faceshields only

EN 1731:2006 - Mesh type eye and face protectors

Note: Requirements and markings for radiant heat deleted from the standard.

Markings (following EN166) are, where applicable, in the order:

Maker’s

mark

EN 1731

Mechanical strength

Mechanical strength

S, F, B or A - as for EN 166

Welding

EN 169:2002 - Filters for welding and related techniques

Markings follow EN166. Contains informative annex giving guidance on selection and

use of welding filters.

EN 175:1997 - Eye and face protection during welding and allied processes

Note – this describes the frame or holder which must be used in conjunction with an appropriate

welding filter - EN 169 or EN 379.)

Markings (following EN166 with additions) are, where applicable:

S, F or B - mechanical strength (as for EN 166)

9 - resistant to molten metal splash or hot solids

W - face/hand shield sizes stable after water immersion

# - if mass of shield >450g (faceshield) or >500g (handshield),

mass in grams (where applicable)

EN 379:2003 – Personal eye-protection — Automatic welding filters

Markings follow EN166 with additions.

It is easiest to explain the markings for different types of device.

Automatic welding filters and automatic welding filters with manual scale

number setting

The order of markings (each separated by an oblique stroke /) is:

Light

shade

Dark

shade [or

range(s)]

Makers

mark

Optical

class

Light

diffusion

class

Variations in

luminous

transmittance

Angle dependence of

luminous transmittance

class (optional)

followed by the standard number EN379

Light and dark scale (shade) numbers

The light state scale number and the lightest dark state scale number(s), separated by

an oblique stroke, are given instead of a single scale number. If the dark state is

manually controlled, the limits of the range are separated by a hyphen.

Light shade

- scale number between 1.2 and 5 (typically)

Dark shade [or range(s)]

Options:

- one dark state – single number

- one dark state range – top and bottom of range separated by hyphen

- two dark state ranges – each range as above, with ranges separated by hyphen

The other markings are as described for automatic welding filters.

Note – For all device types there may also be a marking, if the device does not meet optical

   requirements at temperatures below 10oC:

“ DO NOT USE BELOW 10oC”

Laser

EN 207:1998 - Filters and eye protection against laser radiation

Markings, where applicable, in the order:

Laser

type(s)

Wavelength

Scale

number

Makers

mark

Test

mark

Mechanical strength

Laser types - if applicable to all types of laser, no mark appears.

D - continuous wave laser

I - pulsed laser

R - giant pulsed laser

M - mode-coupled laser

Wavelength

# - single wavelength or range (nm), e.g '1060' or'630 - 700'

Scale number

L# - in range L1 to L10 denoting spectral transmittance. Higher numbers are lower transmittance

Test mark

eg Kitemark (if applicable)

Mechanical strength

S, F, B, A - as for EN 166

EN 208:1998 - Personal eye protectors for adjustment work on lasers Frames must be marked adjustment eye protectors. Other markings, where applicable, in the order:

Maximum power

#W - maximum laser power (Watts), e.g. '10W'

Maximum energy

#J - maximum laser energy (Joules), e.g '2x10-3J'

Wavelength

# - single wavelength or range (nm), e.g '1060' or '630 - 700'

Scale number

R# - in range R1 to R5 denoting spectral transmittance. Higher numbers are lower transmittanc

Test mark

eg Kitemark (if applicable)

Mechanical strength

S, F, B or A - as for EN 166

Firefighters and emergency teams

EN 14458:2004 – Faceshields and visors for firefighters, ambulance and emergency services

= General (non-firefighting) use, or

+ Firefighters’ use

face guard, or

eye guard

Options

Scale number appropriate to filtering performance

(see EN 166)

Temperature extremes of testing

T – resistance to medium energy impact at extremes of

temperature

A – resistance to high energy impact

AT – resistance to high energy impact at extremes of

temperature

K – resistance to abrasion

N – resistance to fogging

R – enhanced infrared reflection

Ω - electrical properties

Sport

EN 174:2001 - Ski goggles for downhill skiing

Filtering oculars marked according to transmittance:

S# - in range S0 to S4. Higher number indicates lower

transmittance.

BS 7930-1:1998 - Eye protectors for racket sports - Squash.

Oculars

- manufacturer identification

- Standard number (BS 7930-1)

Frames

- manufacturer identification

- Standard number (BS 7930-1)

- model size if applicable