safety spec

Question 1

Mechanical strength symbols
1) S
2) F
3)B
4) A

Answer 1

1) increased robustness ( toughened glass/increased thickness CR39)
2) Low energy impact - polyC/trivex 45———-spex/gogs/Face shields^
3) medium energy impact 120 , goggles/face shields
4) high energy impact 190 , visors/face shield

Question 2

3

Answer 2

resistant to Liquid droplets / splashes (Goggles and Faceshields Only) frames

Question 3

4

Answer 3

4 - resistant to Large dust particles (Goggles Only) frames

Question 4

5

Answer 4

5 - Gas and fine dust particles (Goggles Only) , frames

Question 5

8

Answer 5

8 - Short circuit electric arc (Faceshields Only)
resistant to electrical charge

Question 6

9

Answer 6

9 - Molten metals / hot solids (Goggles and Faceshields Only)
no adherence to molten metals , farmes,lens, goggles, fs

Question 7

G

Answer 7

resistant to radial heat , frame ,lenses, fs

Question 8

K

Answer 8

resistant to surface damage , lens, specs ,f s

Question 9

N

Answer 9

resistant to fogging lens, specs, goggles ,face shields

Question 10

What is optical class

Answer 10

• clarity of lens
  indicating how long and how often the gas can be safely worn.

C1- best optical quality , distortion free and can be worn continuously without harming the eyes
C2 - lesser optical quality,- intermittent use
C3- lowest optical quality. occasional. use but should not be worn for lengthen time

1- continuous work
2. intermittent work
3- occasional work