[Purple Light Flashlight]Purple Light Flashlight Use The Harm of Purple Light Flashlight
Purple Light Flashlight Use
Go Buy a violet flashlight, which can measure fluorescent agents. “Recently, a news that “the purple light flashlight can detect whether maternity and infant products contain fluorescent agent” spread in the WeChat Moments, arousing the attention of “mothers-to-be”. The blue light emitted by the Ziguang flashlight all appeared to be “exploding”, and the test value of one of them exceeded the highest intensity level 5. Further investigation found that small household appliances such as Ziguang flashlights have not obtained the 3C certification of household appliances, and there are extremely It is a big harm.
It is found that the purple light flashlight can be bought by tens of yuan of heat transfer. This news widely circulated in the circle of friends says that the toilet paper and wet wipes used by the baby may contain fluorescent agents, and the ultraviolet light is irradiated by the purple light flashlight. , can detect whether these products contain fluorescent agents. Ms. Sun, one of the expectant mothers who forwarded this news, said: “If you buy something that costs more than ten yuan, you will be more assured if you buy it and test whether there is fluorescent agent.
According to the clues provided by the expectant mothers, Taobao searched for “purple flashlight fluorescent agent”, and there were more than 500 pieces, with prices ranging from 3 yuan to 500 yuan. Many merchants directly typed them on the pictures. Advertisements for “a must-have artifact for mothers” and “a must-have for expecting mothers”.
The customer service of the online store introduced that there are many kinds of their own products. Not the same, but the effect is the same. “Some shops are also selling Ziguang flashlights.
The owner of a shop said while taking out a few samples, “We also have our own online shop now, and we still sell more online. My family sells well in a month. Hundreds. “Checking these flashlights, I found that neither the outer packaging nor the flashlight itself has a certification mark, and some flashlights even only have a thin white outer packaging box, there is no trademark on the carton, and there is no certificate of conformity, manual, etc. in the carton.
Hazards of purple light flashlights
Expectant mothers are concerned about whether the fluorescent agent can be detected, and whether the purchased purple light flashlights are certified and safe I don’t care much about the logo.
Can these so-called purple light flashlights detect fluorescent agents? I bought 5 purple light flashlights from online stores and small commodity markets for experiments, and recorded 3 of them.
Experimental guidance
Experimental equipment: 3 types of purple light flashlights, marked as A, B, C, ZF-C three-purpose purple light analyzer, ultraviolet intensity meter, toilet paper, towel , A4 paper
Experiment 1 to test whether the purple light flashlight can detect the fluorescent agent
Experimental steps
1. Put the A4 paper, toilet paper and towel on the purple light Under the analyzer, turn on the UV switch to irradiate
2. Use a flashlight to irradiate the above items
Experimental results
The intensity of the flashlight value conversion
A39 .81mW/cm2398.1W/m2
B0.35mW/cm23.5W/m2
C0.34mW/cm23.4W/m2
Conversion formula: 0.1mW/cm2=1000mW/10000cm2=1W/m2
●Interpretation
According to the literature, it is found that among the effects of ultraviolet intensity on the human body, when the intensity exceeds 15-30W/m2 You should avoid going out. In the test, the intensity of A exceeds the highest level of five.
According to the product introduction of the merchant, the wavelength of the purple flashlight sold is 365nm.
Check the literature The data found that the intensity of ultraviolet rays with a wavelength greater than 320nm is higher than that of sunlight, and if the human body is exposed to this light for a long time, the health will be endangered.
Experimental exposure results
Items Violet analyzer flashlight
Toilet paper to blue to blue
A4 paper to blue to blue
Towel to blue to blue
●Interpretation
The violet analyzer is a professional instrument for testing fluorescent agents. The fluorescent agent can emit blue light under ultraviolet light. The toilet paper and other items used in the experiment show blue light under ultraviolet light, indicating that they contain fluorescent agents.
After being irradiated by the violet light flashlight, the items containing the fluorescent agent all turn blue, indicating that the violet light flashlight can emit ultraviolet light and can detect whether the items contain fluorescent agents.
UV The effect of line intensity on human body
Class 280-400nm ultraviolet radiation on human body
The intensity of radiation dose index may affect the human body
Class 1<50,1,2 most Weak, no need to take protective measures
Level 2 5-103, 4 Weak, some protective measures can be taken appropriately
Level 3 10-155, 6 Medium Wear sun hats and sun exposure when going out Umbrella, etc.
Avoid going out when level 4 is 15-307, strong 8, 9 and 10-16
Level 5 ≥ 30 ≥ 10, strong 10-16 should avoid going out
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Inquiry about the purple light flashlight without 3C certification
Through the experiment, it was found that these five purple light flashlights all have potential safety hazards. At the same time, these flashlights are all “three-no” products (that is, no production date, no quality certificate, and no manufacturer), and there are no safety tips in the packaging.
Ultraviolet light is mainly used for medical disinfection, treatment and money detectors. A doctor in Tongzhou Public Hospital said in an interview with reporters that if ultraviolet light is used as medical equipment, such as ultraviolet light disinfection equipment, there are strict regulations and national standards.
After inquiries, it was found that small household appliances such as Ziguang flashlights are neither medical equipment nor special equipment. This morning, the relevant staff of the China Household Electrical Appliances Research Institute said in an interview with reporters: “Flashlights are electronic products. In China, all electronic products require 3C certification.”
“Because of the lack of standards and markets Normative system, coupled with the differences between manufacturers, it is difficult to ensure quality.” The person analyzed.
Remind that ultraviolet rays are harmful to pregnant women, “Ultraviolet rays have different spectral ranges. Medically used ultraviolet rays are ultraviolet rays in a specific spectral range, which are used for air disinfection in clinics. People exposed to ultraviolet rays will cause dry eyes, Astringent, severe vision damage, skin ulceration, etc.”
For the purple flashlights that can measure fluorescent agents currently on the market, expectant mothers need to be careful when using them. “Ultraviolet light is harmful to ordinary people, and it is even more harmful to pregnant women. It is recommended to reduce the use of such purple flashlights during pregnancy.” The doctor said.
Experiment 2: Test the ultraviolet light intensity emitted by the purple flashlight
●Experimental steps
1. Turn on the UV intensity meter, turn on the power of A, B, and C, and Light up, put it on the test place of the intensity meter
2. Read the value displayed by the intensity meter
