Choose goggles that protect yourself from tear gas, rubber bullet and Wu Han Virus

Learn how to pick safety goggles that protect you from tear gas, rubber bullets, Wu Han Virus and more based on ANSI Z87.1-2015 and EN166, EN169, EN170, EN171 and EN172.

Live rounds, tear gas, rubber bullets, tactical flashlight and molotov are common in Hong Kong nowadays. It is wise to prepare yourself a pair of goggles to protect your eyes.

Virus is another reason why you need a good pair of goggles. It is confirmed that Wu Han Virus can infect your eyes through aerosol contact.

This time we will teach you how to choose goggles that protect you from tear gas, rubber bullets and Wu Han Virus based on American standard ANSI Z87.1-2015 and European Standard EN166, EN169, EN170, EN171 and EN172.

Goggles with tear gas protection

Despite what its name suggests, tear gas is not gas but fine particles. To protect your eyes from tear gas, you need goggles that can withstand fine particles.

Based on American standard Z87.1-2015, the D3 marking indicates protection for splash and droplets; the D4 marking indicates protection for particles greater than 5 um; the D5 marking indicates protection for particles smaller than 5 um.

Therefore, you need to choose goggles with D5 marking to protect your eyes from tear gas.

Based on European standard EN166, the 3 marking indicates protection for splash and droplets; the 4 marking indicates protection for particles greater than 5 um; the 5 marking indicates protection for particles smaller than 5 um.

You would need to find a goggles with EN166 5 in order to completely mitigate the effect of tear gas.

The battle of Chinese University(11 Nov 2019 – 15 Nov 2019). Tear gas was everywhere.

Goggles that prevent virus infection

It has been confirmed that Wu Han Virus can be transmitted and infect your eyes through aerosol contact. You need to use a pair of goggles with mask to completely protect yourself.

If you only want to prevent infecting Wu Han Virus through droplet infection, goggles that can block splash and droplet will suffice.

Based on American standard Z87.1-2015, you will be looking for goggles with a D3 marking; based on European standard EN166, you will be looking for goggles with a 3 marking.

If you want to prevent both droplet and airborne infection, you need to choose goggles that can block fine dust smaller than 5um.

Based on American standard Z87.1-2015, you need to find goggles with a D5 marking; based on European standard EN166, you need to find goggles with a 5 marking.

Goggles with ballistic protection

To measure the power of a bullet, we need to have its weight and velocity(The length of barrel will affect its velocity. Ammunition manufacturers usually use a 24 inch barrel).

ALS 1202, a rubber bullet used by Hong Kong Police weights 9 gram and has a velocity of 152m/s.

Assuming it is fired from a 24 inch barrel, the impact energy of ALS 1202 is 105 joule.

Rubber bullet used by Hong Kong Police, ALS 1202.

The highest grading for impact protection in American standard Z87.1-2015 is the + marking. To get this marking, goggles need to pass two test. The first one is to withstand the impact of a 500 gram cone, falling from about 1.3 meter without any damage. The impact energy of this cone is 6.4 joule.

The second test is to withstand the impact of a 1.05 gram steel ball in 76m/s without any damage. The impact energy of that steel ball is about 3 joule.

The highest grading for impact protection in European standard EN166 is the A marking. To get it, goggles need to withstand impact of a steel ball weighted 0.86 gram in 190m/s without any damage. The impact energy of that steel ball is 15.5 joule.

Comparing with the impact energy goggles tested with and the impact energy of rubber bullets, it is obvious that civilian goggles cannot protect you but merely reduce the damage you would receive in the end.

If you want to have enough ballistic protection against rubber bullets, you need to get goggles that reach American military standard MIL-PRF-32432 or MIL-DTL-43511D.

ESS Striketeam SJ is a popular goggles among Hong Kong protestors, as it has passed MIL-DTL-43511D and offers protection we desperately need.

FAQs

Which safety goggles should I choose if I want to protect myself from tear gas?

You need to choose goggles that can block fine dust smaller than 5 um. Based on American standard Z87.1-2015, goggles with a D5 marking(for instance Z87+D3 D4 D5) will serve your need; based on European standard, goggles with a EN166 5 marking(for instance EN166 3 4 5 9 BT) will serve your need.

Which safety goggles should I choose if I want to protect myself from Wu Han Virus?

If you want to prevent airborne infection, you need to choose goggles that can block fine dust smaller than 5um. Based on American standard Z87.1-2015, goggles with a D5 marking(for instance Z87+D3 D4 D5) will serve your need; based on European standard, goggles with a EN166 5 marking(for instance EN166 3 4 5 9 BT) will serve your need.

If you only want to prevent infecting Wu Han Virus through droplet, goggles that can block splash and droplet will suffice. American standard Z87.1-2015, goggles with a D3 marking(for instance Z87 D3) will serve your need; based on European standard, goggles with a EN166 3 marking(for instance EN166 3) will serve your need.

Which safety goggles should I choose if I want to protect myself from rubber bullets?

The highest grading for impact protection in American standard Z87.1-2015 is the + marking; the highest grading for impact protection in European standard EN166 is the A marking .

Nevertheless, protections offer by civilian safety goggles do not stand a chance against rubber bullets. They can only reduce the damage you would receive in the end.

If you want to have a complete protection against rubber bullets or similar ammunition, you need to get goggles that reach American military standard MIL-PRF-32432 or MIL-DTL-43511D.

Which safety goggles should I choose if I want to protect myself from visible light?

Based on American standard Z87.1-2015, goggles that offer protection against visible light have a L marking, with L1.3 being the weakest and L10 being the strongest(for instance Z87+ D3 D4 D5 L3).

Based on European standard EN172, googles that offer protection against visible light have have a 5 or 6 marking. Goggles with a 6 marking offer infrared protection as well.

Which safety goggles should I choose if I want to protect myself while welding?

Based on American standard Z87.1-2015, goggles that offer protection for welding have a W marking, with W1.3 being the weakest and W14 being the strongest.

Based on European standard, goggles that offer protection for welding have a EN175 certificate.

Which safety goggles should I choose if I want to protect myself from Infrared radiation?

Based on American standard Z87.1-2015, goggles that offer protection against Infrared radiation have a R marking, with R1.3 being the weakest and R10 being the strongest.

Based on European standard EN171, goggles that offer protection against Infrared radiation have a 4 marking(for instance EN166 3 EN171 4).

Which safety goggles should I choose if I want to protect myself from UV radiation?

Based on American standard Z87.1-2015, goggles that offer protection against UV radiation have a U marking, with U2 being the weakest and U6 being the strongest.

Based on European standard, goggles that offer protection against UV radiation are marked with EN170 2, 2C or 3. They offer similar UV protection, but 2C and 3 allow you to recognize color better while wearing the goggles.

Reference

    Leave a Comment

    Your email address will not be published.

    English粵文