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Type Standard & Test Method Test Description
Type 3
Jet Spray
Test

EN 14605+A1 :2009
EN ISO 17491-3 :2008

Type3

type_3_jet_spray_test

This test involves exposing a whole suit to a series of short jets of a water based liquid (with a low surface tension of 30-35 m N/m) aimed at various critical parts of the suit. The pressure of the jet when leaving the firing nozzle is 3 bar and the firing nozzle is situated at a distance of 1m away from the garment.

The liquid is coloured, so that any inward leakage will visibly stain the undergarment. A suit has passed the test when the total stained area on the undergarment is smaller than three times the calibration stain. (The calibration stain is the stain area produced by 0.02 ml of the test liquid.)

Type 4
Saturation
Spray
Test

EN 14605+A1 :2009
EN ISO 17491-4 :2008,
Method B

Type4

type_4_saturation_spray_test

This test involves exposing a whole suit to an intense spray of a water based liquid (with a low surface tension of 30-35 m N/m). A total quantity of 4.5 litres is sprayed as a fine mist for one minute. There is no pressure exerted by the fine spray on the suit. While being sprayed, the wearer of the suit will perform gentle movements while rotating. The liquid is coloured, so that any inward leakage will visibly stain the undergarment. A suit has passed the test when the total stained area on the undergarment is smaller than three times the calibration stain. (The calibration stain is the stain area produced by 0.02 ml of the test liquid.)

Type 5
Particle
Inward
Leakage

EN ISO13982-1:2004+A1:2010
EN ISO 13982-2
Method B

Type5

This test involves exposing a whole suit (10 test suits) to a dry aerosol of sodium chloride. The particle size is 0.6 μm. While being exposed to the dry aerosol, the wearer of the suit performs the following sequence of 3 movements: 9 minutes standing, 9 minutes walking, 9 minutes squatting. The total inward leakage is expressed as a percentage of the concentration of sodium chloride outside the suit measured for each test suit at 3 points – knee, waist and chest. Therefor, for each suit 9 measurements are taken.

In order to pass the test the inward leakage must be less than 30%, for 82 of 90 of the measurements. (Ljmn, 82/90 ≤ 30%).

And the average inward leakage (all movements and measurement positions for each suit – 9 readings) must be less than 15% for 8 of the 10 suits. (Ls, 8/10 ≤ 15%).

Type 6
Low Level Spray Test

EN 13034 :2005+A1 :2009
EN ISO 17491-4 :2008 Method A

Type6

type_6_limited_spray_test

This test is essentially the same as the Type 4 spray test however the liquid in the Type 6 test has a slightly higher surface tension of 57 m N/m and the quantity sprayed is reduced to 1.9 litres.

A suit passes the test when the total stained area on the undergarment is smaller than three times the calibration stain. (The calibration stain is the stain area produced by 0.02 ml of the test liquid.)

Call us on +44 (0)1482 644220 or email info@chemdefend.co

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ChemDefend
ChemDefend Co Ltd. Unit 15, Waterside Business Park, Livingstone Road, Hessle.
Hull, East Yorkshire HU13 0EG
UK

+44 (0)1482 644220
+44 (0)770 101 1148

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