Dear colleagues,

I am a Masters student studying the potential effects of biological washing 
powders on porcelain. Biological washing powders, as a cost effective and 
readily available source of enzymes, are commonly used for cleaning organic 
staining from high-fired ceramic objects. The last conservation research into 
the general components of biological washing powders and their potential 
effects on ceramic was published in 1993, therefore, a more accurate picture of 
their use and current effects can be gained through a contemporary 
investigation.

A preliminary questionnaire that was sent to a small cross section of 
conservators including private and public sector revealed that the washing 
powders can “etch” or “leave deposits” on glazed surfaces which can be 
difficult to remove, even on porcelain. The aim of this study is to determine 
the circumstances in which this phenomenon occurs and to find safe working 
parameters for the use of biological washing powders in ceramic conservation. 
This questionnaire will help to give a better idea of how biological washing 
powders are being used in industry and may indicate the frequency and 
circumstances in which this phenomenon occurs. 

Please take a few minutes to fill in the questionnaire which can be found via 
the link below. Your input would be greatly appreciated. 

Link to survey - https://goo.gl/forms/l3bnepHMFPbNGm7p2 
<https://goo.gl/forms/l3bnepHMFPbNGm7p2> 

The questionnaire will take approximately 5-10 minutes 
Answers will be kept anonymous 

Thank you for your time, I look forward to reading the responses. 

Emily Thomas
Masters student at West Dean College, UK 
Mail: [email protected] <mailto:[email protected]>
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