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Filters of soldering - NF IN 169: 2003

Compulsory tests and examinations :

Quality of material and surface (169-MS04)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The aim of this test is to evidence all material and surface faults present on the eyepieces of personal eye protection equipment and ophthalmic eyepieces.

The observation zone is 30 mm around the reference point, it excludes a marginal zone of 5 mm from the edge of the lens. A large range of faults may be observed on the latter (e.g.: bubbles, embedding, scratches, cracks…).


Diffusion of light (169-LD02)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Transmittance (169-FT08)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Variation of the transmission factor (169-VFT8)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Optical power (169-PO05)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The aim of this test is to measure the values of the spherical, astigmatic and prismatic powers of lenses. The measurements are made at the reference point.

The interpretation of the results, with regard to optical power, depends on the standard tested.


Minimum toughness (169-SM01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The aim of this test is to measure the permanent deformation of the bridge of a pair of solar or ophthalmic spectacles by exercising on the latter a force of 5 N over a distance equal to 10 % of the inter-pupil value  and thus to evidence the minimum toughness or the deformation of the bridge of a pair of spectacles.

The sample is compliant if no fracturing or cracking is observed over the frame as a whole, if the permanent deformation is = 2 % of the inter-pupil distances, and if the test lens does not break and remains in its housing.


Reinforced toughness on single eyepiece (169-SR06)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to verify the resistance of a single eyepiece to front and side impacts from a steel ball, of a nominal diameter of 22 mm with a mass of 43g, hitting it at a speed of around 5.1 m/s.

The eyepiece is compliant if no fracturing or deformation of the eyepiece is observed.


UV ageing (169-RRU8)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Resistance to ignition (eyepiece) (169-RI01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

The aim of this test is to check the performance of the oculars on contact with an arm mounted at 650 °C.

The sample is compliant if it doesn’t catch fire, and if it does not continue to glow after the flame source has been removed.


Field of vision (169-CV04)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to measure the part of space visible through a mask or spectacles, by verifying the contour of the frame using ellipsis.

The sample is compliant if the spectacles frame does not obstruct vision.


Difference in prismatic power (169-DP05)

The aim of this test is to assess the difference in the prismatic power of a frame by measuring the deviations, horizontal and vertical, of the rays crossing the eyepieces.

The interpretation of the results depends on the standard tested.


Stability at a high temperature (169-TE01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of the frames of ophthalmic spectacles to high temperatures.

The aim of this test is to find out the deformation of the opening of the arms caused by exposure to a high temperature (55°C).The sample is compliant if deformation does not exceed +6 mm and -12 mm (for large frames) compared to its original position.


Resistance to corrosion (169-RC01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of personal eye protection equipment (with metal parts) to corrosion, in an aqueous solution.

The sample is compliant if no oxidation or appearance fault is observed.


Marking and information control (169-MI08)

Accreditation # 1-1497 Scope available on www.cofrac.fr

All markings (eyepieces and frames) must be clear and permanent. Marking must be visible when the full protector is assembled and it must not infringe upon the minimum field of vision. Outside this zone, markings must not obstruct the wearer’s sight.

Oculars' marking must have the technical informations appropriated : level's number, manufacturer's identification, optical class, resistance to the electric arc of short-circuit, not adherence to melted metal and resistance to penetration of the robust warmthes penetration, resistance to damage by fine particles, resistance to fogging, original ocular/replacement ocular, resistance to high speed particles at elevated temperature, brandmark of oculars laminated.

The marking of frames must have the technical informations appropriated : manufacturer's identification, number of this european standard, domain of utilisation, robustness and resistance to high speed particles, resistance to high speed particles at elevated temperature, frames for little head, heigher level's number of ocular.

Eye guard whose frame and oculars form a whole, must have a marking on the frame. This marking must have the complete marking of ocular, one hyphen, the number of this standard and the suited symbols indicating the domain of use and the level of impact.


Dimensions (169-DI01)


Transmittance (166-FT07)

Accreditation # 1-1497 Scope available on www.cofrac.fr



Optional tests and examinations :

Resistance to misting (169-RB01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of personal eye protective equipment to misting. This specification is optional. The test is only conducted if the manufacturer or distributor claims that the product is misting resistant.

The samples are compliant if the misting time measured is above or equal to the requirements set out by the standard.


Reflection increased in the infrared (169-FR02)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Greater gratitude of colors (169-RAC1)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Resistance to surface deterioration by small particles (169-DFP1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of eyepiece surfaces to the deteriorating action of small particles.

The results are interpreted differently according to the standard and the eyepiece’s optic class, using measurements carried out on the diffusion bench.


Checking of the headband (169-ST01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to check the sample’s headband.

The sample is compliant if the headband is at least 10 mm wide over the whole section likely to be in contact with the user’s head, and if it is adjustable or self-adjustable.


Protection against particles thrown at high speed (169-PGV1)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of personal protective equipment to particles thrown at high speed, up to 120 m/s.

The eyepiece is compliant if the sample does not get deformed, does not break, this applying also to the eyepiece housing and the frame, and if the side protection is not defective.


Protection against droplets and projections of liquids (169-PG01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of a spectacles-mask protector against droplets or against snow, by testing its impermeability.

The sample is compliant when its sealing requirement is adhered to.


Side protection (169-PL01)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to verify the eye protector’s side protections. It is carrying out using a rod, by sounding the front and side planes of the frame, trying to touch the impact point areas situated on the artificial head.

The sample is compliant if the eye protector prevents the point of the rod from touching the impact areas situated on the artificial head.


Release of Nickel (169-LN02)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to measure the rate of nickel released by the different parts of metal frames (rounds, bridges and arms).

For a sample to be compliant, the measured rate of nickel released from the entire frame, must be less than 0.5 µg/cm²/week.


Protection against particles thrown at a high speed at extreme temperatures (169-PGV2)

Accreditation # 1-1497 Scope available on www.cofrac.fr

This test enables us to test the resistance of personal protection equipment to particles thrown at a high speed, up to 120 m/s. The impacts are inflicted after conditioning the eye protectors at 55°C and -5°C.

The sample is compliant if it doesn’t become deformed and if it doesn’t break, the same applying to the eyepiece housing or frame, and if the side protection is not deficient.


Protection against the molten metal and the robust warmthes (169-MFS1)


Protection against electric arc of couts-circuits (166-PACC)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Protection against the gas and the fine particles of dust (169-PFP1)

Accreditation # 1-1497 Scope available on www.cofrac.fr


Protection against the big particles of dust (169-GPP1)

Accreditation # 1-1497 Scope available on www.cofrac.fr



A.LU.TEC laboratory
c/o Lycée Victor Bérard
35 quai Aimé Lamy - 39400 Morez - France
Tél. : +33 (0)3 84 33 61 51
Fax : +33 (0)3 84 33 35 13

Accreditation # 1-1497
Scope available on www.cofrac.fr

Only tests identified with symbol
are performed under accreditation covered.


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