Abstract
USERS of optical instruments will be interested in details just issued by Messrs. J. Barcham Green, Ltd., the well-known makers of specialty hand-made papers, of their "105 Lens Tissue". It is claimed that this tissue has a particularly high strength, and yet is thin, light and almost fluff-free. It absorbs moisture an4 oil films readily, and special precautions are taken to exclude grit and similar impurities. Its bulking properties are evident from the fact that 500 sheets make a pack 1 in. thick and weigh less than 10 per cent of the weight of the same area of an ordinary writing paper. A 'near miss' from perfection is claimed; however, since (according to the leaflet) it has been possible to achieve the long-sought ideal of a pH value of 7·0, this claim must be regarded as modest, in one respect at least.
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Lens-cleaning Tissues. Nature 161, 514 (1948). https://doi.org/10.1038/161514a0
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DOI: https://doi.org/10.1038/161514a0