成人午夜毛片_精品国产欧美_黄色99_国产一区在线观看视频_国产青青操_999成人网

Shenzhen NTEK Testing Technology Co., Ltd.

Current location : Home > Services> Product testing> Burnable Incense
?

Services

Contact us +

Hot Line 400-800-6106
NTEK Group
Tel:+8618923705875 Q Q:61827361 Email:ntek@ntek.org.cn Blocks C, D and E of Fenda Science and Technology Creative Park, Xixiang, Baoan District, Shenzhen

Perfume test

Introduction to perfume testing

Perfume is a liquid that mixes essential oils, fixatives, and alcohol and ethyl acetate to give objects (usually the human body) a long-lasting and pleasing scent. Essential oils are obtained from flowers and plants, and are extracted by distillation or liposuction. Organic compounds with fragrance can also be used. Fixatives are used to combine a variety of different flavors, including balsam, ambergris, and secretions from the air glands of civet cats and musk deer. The concentration of alcohol or ethyl acetate depends on whether it is perfume, eau de toilette or cologne.

The dangers of poor perfume

        Most of the quality perfumes are extracted from natural plants. The fragrance is pure and harmless to the body. Expensive big-name perfumes will clearly indicate that they are derived from natural floral ingredients, while ordinary perfumes are natural fragrances and other chemically synthesized fragrances. The strong and pungent aroma is mostly due to the aromatic compounds. Although they try to mimic the fragrance of natural flowers, the concentration of artificial fragrance molecules far exceeds the concentration secreted by natural flowers.
         Perfumes are now added with a phthalate (DEHP) ingredient for long-lasting fragrance. Phthalates are actually a family of chemical substances containing more than 10 specific compounds, and not all phthalates are explicitly banned. But DBP, BBP and DEHP are carcinogenic and toxic to the reproductive system.
         Studies have long confirmed that frequent exposure to aromatic volatile substances can cause different degrees of stimulation to human organs, especially the respiratory tract, skin and central nervous system, and may cause skin allergies, asthma, dizziness, chest tightness, and dyspnea. Many people complain about side effects such as urticaria and dermatitis after using fragrance. Aromatics have a significant effect on chronic lung disease, especially in patients with asthma. According to statistics, in the United States alone, up to 75% (about 9 million patients) of asthma cases are caused by perfume.
        The pain caused by perfumes doesn't stop there. Some fanatics of perfumes apply perfume to all exposed skin in order to let themselves exude a charming scent. As a result, patches of redness are formed. This is because certain ingredients in the perfume, such as trace amounts of copper, alcohol and lemon, may produce chemical reactions under the sun, decompose harmful substances, sensitive skin will be irritated, redness, tingling, etc. may even cause contact. dermatitis. Therefore, it is best to apply the perfume out of the sun.
        People with allergic asthma and dermatitis are better off. Perfume is likely to become an allergen. Not for use by pregnant or nursing mothers. In particular, children are more susceptible to fragrances than adults. Unfortunately, almost all baby products on the market have added fragrance. If parents often spray perfume, it will poison the air that the children around them breathe, causing children's inattention, learning difficulties, excessive activities, and even serious hazards such as convulsions and stunting.

Perfume test range

net weight
Methanol
Color
aroma
Sharpness
Relative density
Turbidity
Color stability

Our advantage

Obtaining quotations

Corporate name: *
Your name:*
Your cell phone and E-mail:*
Your needs:*

*For your benefit, your information will be kept strictly confidential

Submit successfully

Professional engineers will contact you quickly to provide you with appropriate solutions and look forward to meeting you~

Official account WeChat
主站蜘蛛池模板: 国产一区二区三区网站 | 国产女人视频 | 四虎影院一区二区 | 中文字幕在线一区 | 日本超碰 | 青草国产视频 | 国产精品一区二区三区在线播放 | 国产天堂网 | 午夜精品网站 | 日韩精品一区二区在线观看 | 爱情岛论坛自拍 | 97视频在线观看免费 | 久久福利视频导航 | 中文色网 | 中文字幕成人在线观看 | 欧美 日韩 国产 在线观看 | 五月婷婷综合色 | 国产成人精品免费看视频 | 太骚了全程淫语小说 | 成人小视频在线 | 国产一级免费在线观看 | 国产做a视频| 日本大片在线播放 | 99av国产精品欲麻豆 | 欧美一二三区在线观看 | 国产另类av| 天天操天 | 久久久久久久99 | 第一页国产 | 一级黄色大片免费看 | 亚洲天堂导航 | 一级二级三级黄色片 | 欧美不卡影院 | 日韩精品在线免费视频 | 午夜天堂网 | 永久免费毛片 | a视频在线观看免费 | 十八岁毛片 | 在线观看成人免费 | 久草中文在线观看 | 日本精品三区 |