3M 12308 OTG safety glasses — over prescription glasses

3M 12308 OTG Safety Glasses – Designed to Fit Over Prescription Glasses

These 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 OTG (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&R) workshop. The limitations are listed one by one below.

What are they used for?

• Dusting and mechanical surface cleaning, when particles might fly and you don't want to remove your prescription glasses
• Sanding and leveling stucco and fillers, with airborne aggregate dust
• Working with scalpels, knives, and cutting tools, where particles and chips might fly towards the face
• Preparing and mounting supports: cutting fabric, stretching over frames, removing nails, staples, and tacks
• Handling and weighing pigment powder, which can become airborne when opening containers and pouring into scales
• Dismantling frames and auxiliary workshop carpentry

Why choose the 3M 12308 OTG?

• They are over-the-glasses (OTG) 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.
• Polycarbonate lens with anti-fog treatment declared by 3M on the packaging: this treatment works when working bent over the piece or wearing a mask.
• Clear and untinted lens: does not distort color, which is essential for working with them during chromatic reintegration.
• They are 3M with the manufacturer's reference 12308 printed on the packaging: you know exactly which model you have and which one to reorder when needed.

Features

• Polycarbonate lens with anti-fog treatment
• Worn over prescription glasses
• Foldable temples at 90° for storage
• Extendable temples in three positions
• 360° rotating temples
• Clear, untinted lens

Presentation and storage

• Presentation: loose unit (manufacturer's box reference 12308-00000-20CN)
• Store in a dry place, without weight on top and without resting the lens against a hard surface or cutting tool.
• Cleaning: warm water, mild soap, and a soft cloth, air dry.

The stated limitations

• The lens is polycarbonate, and acetone attacks polycarbonate. 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 mechanical work: sanding, dusting, mechanical cleaning, and handling. For continuous work with solvents, please contact us, and we will find the specific glasses you need.
• These are not filtering glasses. 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.
• These are not sealed laboratory goggles. 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.
• The anti-fog treatment is damaged if cleaned with solvent 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.

Frequently asked questions

Do you have any questions? Contact us via WhatsApp, visit innovart.art, or email us at info@innovart.art, and we will advise you.