![]() ![]() Nose pads and temples are free as long as the parts are available. Rx - Smith prescription eyewear is warranted to the original purchaser for two years from the date of purchase against any manufacturing defects. (“Smith”) is committed to quality, and we have built our reputation on long-lasting, high-performing products.Īll Smith sunglasses and goggles (including custom goggles) are covered for the lifetime of the product to be free from manufacturer's defects under the terms and conditions of this policy.Īll Smith helmets are covered for the duration of three years from the date of purchase against any manufacturer’s defects under the terms and conditions of this policy. Replace them with new ones as soon you notice any defects or you feel any discomfort.Smith Sport Optics Inc. Check daily for loose screws or hinges, and for scratches or cracks on the lenses. It is said that the lens portion can be used for 3 years and the frame portion for 5 years. The frames are made of soft and easy-to-process materials such as polypropylene and soft polyvinyl chloride. ![]() Safety glasses are made of hard, impact-resistant plastic resin such as polycarbonate or acrylic resin for the lens portion. The standard for heat resistance is that there must be no deformation at 55☌. The standard for impact resistance is that the lens must not crack or split when an iron ball weighing 44 g is dropped from a height of approximately 1.3 m. They are constructed to withstand harsh environments, such as a laboratory surrounded by chemicals, or an outdoor work site where the environment is hot and subject to strong vibrations and impacts. Safety glasses are more impact-resistant, abrasion-resistant, heat-resistant, and fog-resistant than ordinary glasses. In situations where safety glasses are used, even a foreign object entering through a gap in the lens can cause a serious accident, so the structure is more protective. Ordinary spectacles have a gap around the lens, whereas safety glasses have a surrounding area around the eyes. The difference between the construction of safety glasses and ordinary glasses is the shape of the lens portion. Other types of safety glasses are also available, such as small-sized ones for women and ones with anti-fog coating. Safety glasses with anti-scratch coating are used to ensure safety when working with metal fragments that may fly out. Safety glasses are used not only in chemical and biological fields but also in grinding and cutting fields. If you choose a heat-resistant type, you can sterilize them without any problem. General safety glasses cannot withstand sterilization at high temperatures (approx. In such cases, all instruments used must be sterilized at high temperatures by autoclave or other means. In biological research fields, it is sometimes necessary to work in a sterilized environment. ![]() The lenses are wider than those of ordinary safety glasses, and can fully cover the eyeglasses. ![]() For this reason, they are designed to be worn over eyeglasses for people who normally use glasses to correct their vision. Generally, safety glasses do not come in a lens-type version. Safety glasses are used in a wide variety of workplaces, and there are many different types of safety glasses. In order to protect one's own eyes, it is necessary to thoroughly check for any scratches or deformation before use. Currently, safety glasses that can be worn over ordinary glasses are also available on the market. The method of use is the same as for ordinary eyeglasses, with the arms being placed over the ears to complete the wearing process. In some cases, the use of safety goggles is required by each business site even in places where it is not required by law. Safety glasses are used in workplaces where people handle items that could be dangerous if they get into their eyes, and the standards stipulate the conditions for their use. A type of safety glasses called protective goggles is also available, which has a higher level of protection than safety glasses. Unlike ordinary eyeglasses, the type, construction, and materials used in safety goggles are strictly regulated by certain standards. They are often called "safety glasses" or "laboratory glasses." They are used in a wide variety of locations, including laboratories and workrooms at universities and manufacturers, as well as outdoor workplaces where power tools and laser equipment are used. Safety glass refers to glasses that prevent dust, dirt, metal powder, and chemicals from entering the eyes. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |