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bacterial decomposition of clays and glazes

updated sun 29 nov 98

 

Edouard Bastarache on sat 28 nov 98

Hello all


For those of you who seem interested
in this problem a few weeks ago .



NIOSHTIC RECORD NUMBER : 73502
TITLE :
Bacterial Decomposition in Glaze and Clay Slips
NIOSHTIC CONTROL NUMBER : NIOSH-00113249
AUTHOR(S) :
Kepka, G. M.
SOURCE :
Pacific Coast Ceramic News
PUBLICATION DATE : 1954-12-00
ABSTRACT :
The bacterial decomposition of pottery glazes and clay slips is
described.
Decomposition problems and the use of preservatives and additives are
discussed. The author notes that the organic material in glazes and
slips,
particularly in those made of clay, supports bacterial growth, and gums
added to glazes as binders also promote bacterial growth. Bacterial
decomposition causes the glaze or slip to become less viscous and to
release
gases and odors into the atmosphere. Solutions to the problem of glaze
and
slip spoilage include refrigeration or adding a preservative to the
compound. Recommended preservatives are sodium-benzoate, formaldehyde,
orthophenylphenol, and sodium-orthophenylphenate.
DESCRIPTOR(S) :
Microorganisms / Ceramics / Bacteria / Bacteriostasis / Pottery glaze /
Pottery industry


Edouard Bastarache
edouardb@sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/~edouardb/