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Subject: Lascaux 498HV

Lascaux 498HV

From: Valerie Tomlinson <vtomlinson<-a>
Date: Wednesday, October 8, 2014
Christina Margariti <xchristma<-a t->yahoo< . >com> writes

>Has anyone encountered 'blooming' white formation on the surface of
>objects consolidated with Lascaux 498HV (object kept in a fridge,
>and due to system failure in increased RH levels, 75%, for a
>prolonged period of time)?

I think it's relatively common for many water based emulsions to
bloom in the presence of excess moisture.  If the bloom doesn't go
away on a return to normal humidity after a few days, then misting
or brushing with solvent should reconsolidate the surface.

Valerie Tomlinson
Conservator
Auckland War Memorial Museum
Tamaki Paenga Hira
The Domain
Private Bag 92018
Victoria Street West
Auckland 1142
New Zealand
+64 9 306 7070 ext 7304


                                  ***
                  Conservation DistList Instance 28:19
                Distributed: Saturday, October 11, 2014
                       Message Id: cdl-28-19-007
                                  ***
Received on Wednesday, 8 October, 2014

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