{"title":"Testing of Inexpensive Nitrogen Chambers for Maintenance of Herbarium Specimens","authors":"M. K. Van Zant, D. Lightfoot","doi":"10.14351/0831-4985-35.01.06","DOIUrl":null,"url":null,"abstract":"\n Inexpensive vacuum bags, designed to store fabrics and made from oxygen-barrier plastic, were repurposed as ambient temperature nitrogen chambers to neutralize pests on herbarium specimens. Combination t-test and ANCOVA results on data from oxygen-monitoring tablets indicated 0.1% anaerobia was maintained inside these bags for 39 days. Anaerobia below 0.3% oxygen maintained for up to 3 weeks deactivates insects, bacteria, and most molds. One or two small oxygen-absorber packets placed inside bags affected how quickly and reliably 0.1% anaerobia could be achieved and maintained. Three vs. six flushes with nitrogen had no statistically significant effect for achieving anaerobia.","PeriodicalId":10705,"journal":{"name":"Collection Forum","volume":"147 1","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Collection Forum","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.14351/0831-4985-35.01.06","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
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Abstract
Inexpensive vacuum bags, designed to store fabrics and made from oxygen-barrier plastic, were repurposed as ambient temperature nitrogen chambers to neutralize pests on herbarium specimens. Combination t-test and ANCOVA results on data from oxygen-monitoring tablets indicated 0.1% anaerobia was maintained inside these bags for 39 days. Anaerobia below 0.3% oxygen maintained for up to 3 weeks deactivates insects, bacteria, and most molds. One or two small oxygen-absorber packets placed inside bags affected how quickly and reliably 0.1% anaerobia could be achieved and maintained. Three vs. six flushes with nitrogen had no statistically significant effect for achieving anaerobia.
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