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</o:shapelayout></xml><![endif]--></head><body lang=EN-CA link=maroon vlink=maroon><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Hi James,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Mold growth at any given temperature requires a combination of high RH and time at the elevated RH.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>A convenient source for estimating the RH x time boundaries at about room temperature is in Stefan’s web page on Incorrect Relative Humidity as an Agent at: <a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.cci-2Dicc.gc.ca_resources-2Dressources_agentsofdeterioration-2Dagentsdedeterioration_chap10-2Deng.aspx&d=AwMFaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=4yfc1mUVfSGbHR40pIgf41zrF2NHR6zNEBNDso2YVEE&s=e4pTnetq3lioAUTFOu26FNKlbIp_1-0QW3VZNCgG8VA&e=">http://www.cci-icc.gc.ca/resources-ressources/agentsofdeterioration-agentsdedeterioration/chap10-eng.aspx</a> <o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>There you will see the time required for mold growth at these RH conditions can be estimated as:<o:p></o:p></span></p><table class=MsoTableGrid border=1 cellspacing=0 cellpadding=0 style='border-collapse:collapse;border:none'><tr><td width=56 valign=top style='width:42.15pt;border:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>% RH<o:p></o:p></span></p></td><td width=66 valign=top style='width:49.6pt;border:solid windowtext 1.0pt;border-left:none;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Days <o:p></o:p></span></p></td></tr><tr><td width=56 valign=top style='width:42.15pt;border:solid windowtext 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>90<o:p></o:p></span></p></td><td width=66 valign=top style='width:49.6pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>3<o:p></o:p></span></p></td></tr><tr><td width=56 valign=top style='width:42.15pt;border:solid windowtext 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>80<o:p></o:p></span></p></td><td width=66 valign=top style='width:49.6pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>10<o:p></o:p></span></p></td></tr><tr><td width=56 valign=top style='width:42.15pt;border:solid windowtext 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>75<o:p></o:p></span></p></td><td width=66 valign=top style='width:49.6pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>30<o:p></o:p></span></p></td></tr><tr><td width=56 valign=top style='width:42.15pt;border:solid windowtext 1.0pt;border-top:none;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>70<o:p></o:p></span></p></td><td width=66 valign=top style='width:49.6pt;border-top:none;border-left:none;border-bottom:solid windowtext 1.0pt;border-right:solid windowtext 1.0pt;padding:0cm 5.4pt 0cm 5.4pt'><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>100<o:p></o:p></span></p></td></tr></table><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Remember the importance of guarding against temperature gradients or sources of moisture like damp walls, both of which can cause locally higher RH levels in collection materials than are measured in the middle of a room.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Best,<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'>Rob<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D;mso-fareast-language:EN-US'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> nhcoll-l-bounces@mailman.yale.edu [mailto:nhcoll-l-bounces@mailman.yale.edu] <b>On Behalf Of </b>Bryant, James<br><b>Sent:</b> September-10-15 3:08 PM<br><b>To:</b> nhcoll-l@mailman.yale.edu<br><b>Cc:</b> Milanovich, Sean <SMilanovich@riversideca.gov><br><b>Subject:</b> [Nhcoll-l] preventing and treating mold in basketry and similar woven materials<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>With a fairly large collection of historic basketry woven of plant materials, we are concerned that we are able to maintain the right environment to discourage mold occurrences (especially on baskets with past use in food gathering and prep), and also prevent the dispersal of mold between objects. Are there published standards for this sort of preventative conservation? Even though we are in an area (typically) known for low, year-round humidity, with the prospect of an extended El Nino wet season ahead, we’d like to know we’re doing all we can to inhibit mold. Any suggestions or comments from subscribers would be much appreciated.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>James M. Bryant<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Curator of Natural History<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Museum Depart., City of Riverside<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>3580 Mission Inn Avenue<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>Riverside, CA 92501<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>TEL: 951-826-5273<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'>FAX: 951-369-4970<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D'><a href="mailto:jbryant@riversideca.gov"><span style='color:blue'>jbryant@riversideca.gov</span></a> <o:p></o:p></span></p></div><p class=MsoNormal><span lang=EN-US style='color:white'>i<br><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__BlueRiverside.com&d=AwMGaQ&c=-dg2m7zWuuDZ0MUcV7Sdqw&r=CLFZJ3fvGSmDp7xK1dNZfh6uGV_h-8NVlo3fXNoRNzI&m=ImzxI3BtL7NdTInghf2p__NgDJwdH-ldt1BflcPNp8c&s=IIB7Hiji-65xE8JCRPyQPDaV2R7xAG5u1dbPMOCasng&e="><span style='text-decoration:none'><img border=0 width=650 height=150 id="_x0000_i1025" src="cid:image001.jpg@01D0EC18.D41F5DA0"></span></a></span><span lang=EN-US><o:p></o:p></span></p></div></body></html>