FAQ
Why uses PC material for safety eyewear?
There are different material that can be uses as safety lenses.
The most common and good performance material is Polycarbonate (PC). PC material offer great anti impact quality, clear color and clarity meet CE EN166 optical quality performance.
There is a material called PETG, almost exclusively used on visor in the US market. But it does not meet CE optical performance. Parkson does not make any spectacles/goggle/visor using PETG material.
What is UV light? Does your spectacle provide UV protection?
Ultra violation radiation is divided into UVA (320~400nm), UVB (290-320nm) and UVC (100~290nm).
UVC are completely block by our ozone layer.
UVA and UVB can cross the ozone layer that can cause burn to our skin and eyes with extended exposure.
Just like the use of sunscreen to prevent burn on skin, the use of safety spectacles with UV protection are important to prevent burn to the eyes. Parkson Safety offer safety spectacles with UV380 treatment that can block 97% of harmful UV Rays. UV400 treatment are available to block 99.9% of harmful UV rays.
Test report are available upon request to demonstrate Parkson eyewear products with UV protection effect
What is E, C, G, Type marking on safety helmet?
According to ANSI Z89.1 regulation, there are 2 different impact test and 3 different electrical insulation test:
Impact test:
Type I: impact test for falling power from top, this is usually for safety industrial helmet
Type II: impact test for the falling power from top, right and left side.
Electronic test:
Class E: test to withstand 20,000 voltage
Class G: test to withstand 2,200 voltage
Class C: Not electrically tested. (For vented helmet)
Why auto darkening welding lens operate unconsistantly when weld?
If such situation happened, please check welding helmet by following procedure step by step:
Press "TEST" button located on filter lens,
- Filter changes from a clear state to a dark state immediately after pressing "TEST" button, and then changes back to be a clear state. That means battery is working. Please adjust "SENSITIVITY" knob to "high".
- "Low Battery" light flashing for a second; or filter doesn't change to dark status after pressing "TEST" button, it may "low battery". Please change the battery immediately.
Why does safety spectacles offer in clear, yellow and smoke lenses in general?
What other color lenses do you offer?
Welcome to contact with Parkson Sales team to discuss your requirement.
Do you offer combination kits in your range of safety protection gear?
Yes, we do.
Most popular is our forestry kit - helmet/earmuff/visor combination kit. It consists of safety helmet/visor bracket/helmet mount earmuff and faceshied visor in Mesh and PC material available.
We also offer an earmuff/FFP1 mask/goggle set. This is also a popular starter pack for workers with personal safety protection requirement.
How to choose welding lens shade?
Generally speaking, lens shade depends on current amperages, you may download attached welding lens chart for reference.
Here simply list as below:
- Covered electrodes: please chose shade#9--#14,
- MIG: please chose shade #10-#15
- TIG: please chose shade#9-#14
- MAG: please chose shade#10-#15
