{"product_id":"gafa-de-trabajo-3m-12308-otg","title":"3M 12308 OTG safety glasses — over prescription glasses","description":"\u003ch2\u003e3M 12308 OTG Safety Glasses – Designed to Fit Over Prescription Glasses\u003c\/h2\u003e\n\u003cp\u003eThese 3M over-the-glasses (OTG) safety glasses are for those who wear prescription glasses and don't want to remove them. They are designed to fit over your existing eyewear, hence the acronym \u003cstrong\u003eOTG\u003c\/strong\u003e (over the glasses). The lens is made of clear, untinted polycarbonate with an anti-fog treatment stated by 3M on the packaging. Since it's untinted, it doesn't distort color, which allows you to keep them on while making adjustments in a Conservation-Restoration (C\u0026amp;R) workshop. The limitations are listed one by one below.\u003c\/p\u003e\n\n\u003ch3\u003eWhat are they used for?\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eDusting and mechanical surface cleaning, when particles might fly and you don't want to remove your prescription glasses\u003c\/li\u003e\n\n\u003cli\u003eSanding and leveling stucco and fillers, with airborne aggregate dust\u003c\/li\u003e\n\n\u003cli\u003eWorking with scalpels, knives, and cutting tools, where particles and chips might fly towards the face\u003c\/li\u003e\n\n\u003cli\u003ePreparing and mounting supports: cutting fabric, stretching over frames, removing nails, staples, and tacks\u003c\/li\u003e\n\n\u003cli\u003eHandling and weighing pigment powder, which can become airborne when opening containers and pouring into scales\u003c\/li\u003e\n\n\u003cli\u003eDismantling frames and auxiliary workshop carpentry\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy choose the 3M 12308 OTG?\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003eThey are \u003cstrong\u003eover-the-glasses (OTG)\u003c\/strong\u003e and the manufacturer explicitly states it on the packaging: they are worn over prescription glasses, so you don't have to choose between clear vision and wearing safety glasses.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003ePolycarbonate\u003c\/strong\u003e lens with \u003cstrong\u003eanti-fog treatment declared by 3M on the packaging\u003c\/strong\u003e: this treatment works when working bent over the piece or wearing a mask.\u003c\/li\u003e\n\n\u003cli\u003e\n\u003cstrong\u003eClear and untinted\u003c\/strong\u003e lens: does not distort color, which is essential for working with them during chromatic reintegration.\u003c\/li\u003e\n\n\u003cli\u003eThey are \u003cstrong\u003e3M\u003c\/strong\u003e with the manufacturer's reference \u003ccode\u003e12308\u003c\/code\u003e printed on the packaging: you know exactly which model you have and which one to reorder when needed.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003ePolycarbonate lens with anti-fog treatment\u003c\/li\u003e\n\n\u003cli\u003eWorn over prescription glasses\u003c\/li\u003e\n\n\u003cli\u003eFoldable temples at 90° for storage\u003c\/li\u003e\n\n\u003cli\u003eExtendable temples in three positions\u003c\/li\u003e\n\n\u003cli\u003e360° rotating temples\u003c\/li\u003e\n\n\u003cli\u003eClear, untinted lens\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003ePresentation and storage\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003ePresentation: \u003cstrong\u003eloose unit\u003c\/strong\u003e (manufacturer's box reference \u003ccode\u003e12308-00000-20CN\u003c\/code\u003e)\u003c\/li\u003e\n\n\u003cli\u003eStore in a dry place, without weight on top and without resting the lens against a hard surface or cutting tool.\u003c\/li\u003e\n\n\u003cli\u003eCleaning: warm water, mild soap, and a soft cloth, air dry.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe stated limitations\u003c\/h3\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eThe lens is polycarbonate, and acetone attacks polycarbonate.\u003c\/strong\u003e Acetone, methyl ethyl ketone (MEK), methylene chloride, and chlorinated solvents will crack and fog polycarbonate upon contact or with concentrated vapor. These are suitable for \u003cstrong\u003emechanical work\u003c\/strong\u003e: sanding, dusting, mechanical cleaning, and handling. For \u003cstrong\u003econtinuous work with solvents\u003c\/strong\u003e, please contact us, and we will find the specific glasses you need.\u003c\/li\u003e\n\n\n\u003cli\u003e\n\n\u003cstrong\u003eThese are not filtering glasses.\u003c\/strong\u003e For work with Wood's lamps, photopolymerization, or welding, filtering glasses are required, which are a different product: please contact us, and we will find them for you.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eThese are not sealed laboratory goggles.\u003c\/strong\u003e They do not seal against the face, so they do not retain aerosols or fine dust: for spraying, misting, or airborne dust, sealed frames are required, and respiratory protection is separate.\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cstrong\u003eThe anti-fog treatment is damaged if cleaned with solvent\u003c\/strong\u003e or abrasive paper because it is a surface layer. It should be cleaned only with warm water, mild soap, and a soft cloth to preserve it.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cdiv class=\"innv-faq\"\u003e\n\n\u003cdetails\u003e\u003csummary\u003eCan they be worn over prescription glasses?\u003c\/summary\u003e\u003cdiv class=\"innv-faq__a\"\u003eYes, that's what they're designed for. The acronym OTG stands for \"over the glasses\": 3M states on the packaging that they can be worn over prescription glasses without removing them.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eAre they suitable for working with solvents?\u003c\/summary\u003e\u003cdiv class=\"innv-faq__a\"\u003eFor that, specific glasses are needed, and we can help you find them if you require them. The reason is physical: the lens is polycarbonate, and acetone and chlorinated solvents attack polycarbonate. For work with solvents, specific glasses are required.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDo they have a UV filter?\u003c\/summary\u003e\u003cdiv class=\"innv-faq__a\"\u003eThese are not filtering glasses: the lens is colorless. If you work with a Wood's lamp or photopolymerization, please contact us, and we will find the filtering glasses you need.\u003c\/div\u003e\u003c\/details\u003e\n\n\u003cdetails\u003e\u003csummary\u003eDo they fog up?\u003c\/summary\u003e\u003cdiv class=\"innv-faq__a\"\u003e3M declares anti-fog treatment on the packaging. It is a surface layer: it degrades if cleaned with solvent or rubbed with rough paper. It is preserved by cleaning with warm water, mild soap, and a soft cloth.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eDoes the lens distort color?\u003c\/summary\u003e\u003cdiv class=\"innv-faq__a\"\u003eIt is transparent and untinted, so it does not distort color. This is essential for working with them during chromatic reintegration or reviewing a varnish layer.\u003c\/div\u003e\u003c\/details\u003e\n\u003cdetails\u003e\u003csummary\u003eCan they be disinfected?\u003c\/summary\u003e\u003cdiv class=\"innv-faq__a\"\u003eWith warm water and mild soap, yes. Avoid alcohol and disinfectants with solvents: the anti-fog is a surface layer, and solvents will remove it.\u003c\/div\u003e\u003c\/details\u003e\n\n\u003c\/div\u003e\n\n\u003cp\u003e\u003cstrong\u003eDo you have any questions?\u003c\/strong\u003e Contact us via \u003ca href=\"https:\/\/wa.me\/34614504565\" target=\"_blank\" rel=\"noopener\"\u003eWhatsApp\u003c\/a\u003e, visit \u003ca href=\"https:\/\/innovart.art\"\u003einnovart.art\u003c\/a\u003e, or email us at \u003ca href=\"mailto:info@innovart.art\"\u003einfo@innovart.art\u003c\/a\u003e, and we will advise you.\u003c\/p\u003e\n\n\u003cstyle\u003e.innv-faq{margin-top:8px;}.innv-faq details{border:1px solid #e5e2dc;border-radius:8px;margin:0 0 10px;background:#fff;}.innv-faq summary{cursor:pointer;list-style:none;padding:14px 46px 14px 16px;position:relative;font-weight:700;}.innv-faq summary::-webkit-details-marker{display:none;}.innv-faq summary::after{content:'+';position:absolute;right:16px;top:50%;transform:translateY(-50%);font-size:1.4em;line-height:1;color:#00494f;}.innv-faq details[open] summary::after{content:'\\2013';}.innv-faq details[open] summary{border-bottom:1px solid #efece6;}.innv-faq__a{padding:12px 16px 16px;margin:0;}\u003c\/style\u003e","brand":"3M","offers":[{"title":"Default Title","offer_id":53995974623579,"sku":"XM003825820","price":4.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0954\/8441\/2251\/files\/12308-1.jpg?v=1788858869","url":"https:\/\/innovart.art\/en\/products\/gafa-de-trabajo-3m-12308-otg","provider":"Innovart","version":"1.0","type":"link"}