BS PAS 54:2003 pdf download Specification for domestic ceramicware and glassware一 Articles intended for contact with food stuffs, and vases
3.1.3
china; porcelain
glazed ceramic material, vitrified, impervious, white (or artificially coloured), translucent and resonant.The water absorption of the body is less than 0.5 % (determined according to method A of BS EN 1217).China or porcelain is made generally from kaolin (or other china clays), silica, feldspar or felspathic fluxesand sometimes calcium carbonate or aluminaBS Eiv 1900:1998,definition 3.3.4
8.1.3.1
bone chinabone china is a particular type of china containing at least 35 % by mass of the fired body of tricalciumorthophosphate which can be introduced in the form of bone ash(BS EN 1900:1998,defnition 3.344
8,1.3.2
hard-paste porcelainachina made from a body composed of kaolin, quartz, feldspar and sometimes calcium carbonateNOTE: After an initiallow temperature fring, it is normally covered with a colourle transparent glaze fred at the same time asthe body and thus fused together with it.
3.1.3.3
soft-paste porcelainchinausually containing less alumina but more silica and fluxes than hard-paste porcelainNOTBAfter an initial high temperature fring to produce a vitreous biscuit piece, it is normally covered with a colourles8 … et.”
transparent glaze and then fired at a lower temperature to mature the glazc.
8.1.3.4
biscuit porcelain
3.1.3.5
parian warefine-grained unglazed porcelain containing more feldspar than hard porcelainNOTE Parian ware often resembles Paros marble in appearance.
8.1.3.6
vitreous chinaglazed ceramic bodies vitrified,impervious, white (or artificially coloured), slightly translucent, made ofclays, silica, feldspar and sometimes alumina. The water absorption of the body is less than 0.5 %(determined according to BS EN 1217)[Adapted from BS EN 1900:1998,definition 3.3.5
3.1.4
stoneware
glazed ceramic material, partially vitrified,impervious, generally naturally coloured, hard and opaque.ts body is generally made of clays, silica and flux. The water absorption of the body is less than 3 %(determined according to BS EN 1217)[Adapted fom BSEN 1000:1908,defnition 3.3.0
3.1.5
earthenware
glazed ceramic material oflow vitrifcation, white to cream (or artificially coloured), opaque, with a porousand fine texture. The different elements of the body (grains, pores) are 0.15 mm or less and therefore notvisible to the naked eye, Its body is generally made of clays, silica, feldspar or feldspathic fluxes and/orcalcium carbonate. The water absorption of the body is greater than 3 % (determined accordingtO BS EN 1217)[Adapted from BS EN 1900:1998defnition 3.3.7
3.2Glass
3,2.1
glass
inorganic non-metallic material produced by the complete fusion of a mixture of raw materials at hightemperature into a homogeneous liquid which is then cooled to a rigid condition essentially withoutcrystallisation
3.2,2
soda-lime-silicate glass
glass in which the main constituents are silica sodium oxide and calcium oxideBSEN 1900:1998definition 3.1.2]
BS PAS 54:2003 pdf download
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