ACCEPTABLE GLASS QUALITY STANDARDS – TV IN disguise
The Silver Dielectric TV Mirror Glass produces a modern look. With less glare than a standard mirror, when turned off, the TV disappears completely.
Please note that this mirror is slightly darker then a standard mirror and the primary use of this product is as a TV, not a mirror.
Samples are available from the shop.
Scope
This document defines the level of acceptance for visible distortions in clear, tinted and coated glass. Coating on glass, in particular mirror coatings, increase the reflective property of the glass and this can make the visual distortions more noticeable even though there is no more distortion present.
Objective
All glass supplied should be as free as possible from defects caused in manufacture, handling, storage and transit. However, the Customer shall accept glass with minor imperfections provided they fall within the scope of the following definitions and acceptance criteria. Glass which falls within these quality standards is not considered to be faulty goods.
Definitions
Viewing Distance – The distance from the observer’s eye to the glass surface.
Scratch – A long narrow surface flaw produced by a hard object, e.g. grit, which produces a perceptible depression.
Sleek – A fine scratch with no perceptible depression.
Inclusion – In soluble matter retained within or on the surface of the glass during manufacture.
Scar – A scratch which is obtrusively visible being normally white in colour.
Method of Visual Inspection
The glass panel is to be mounted vertically so that the whole surface can be seen. The panel should be examined in natural daylight/overcast sky and not in direct sunlight with no visible moisture on the surface.
Viewing distance – A minimum viewing distance of 2.0 metres is to be used. Toughened, laminated or coated glass should be viewed from 2.0 metres.
Viewing position – A viewing position at right angles to the unit from room side.
Viewing aids – No visual aids other than spectacles for normal visual correction shall be used.
Visual focus – Vision to be directed at a point not less than 1 metre on the opposite side of the glass from the observer. This is to ensure that the glass is looked through and that the vision is not concentrated on the surface.
Acceptance Criteria
Minor defects/imperfections are to be accepted if they fall into the categories below:
Acceptable Quality Standards
White scars are not acceptable.
Scratches and streaks which are not visible when examined as specified in Method of visual Inspection are to be accepted.
Seeds, blisters, hairlines or blobs are acceptable if they are no greater than 2mm.
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