Change ), You are commenting using your Google account. Weldbond Good-quality A4 paper, preferably acid-free, is sufficient for the needs of a domestic herbarium, but if one day you might donate your sample consider the advantages of a larger format. endobj
In the summer of 2018 Jennifer Doubt, the museum’s botany curator, presented me with a challenge: find a better adhesive for mounting the museum’s botany specimens on herbarium sheets. Change ).
My research led me to recommend three neutral pH polyvinyl acetate (PVA) adhesives or “white” glue. Emergency Contacts | Campus Contacts | Email the Helpdesk, The University of the West Indies St. Augustine, Tel: (868) 663-1334 / 662-4394 Fax: (868) 663-9684, National Herbarium of Trinidad and Tobago
BEVA 371 (SN). So an adhesive must have enduring strength to hold a specimen on its sheet and also flexibility to keep it held while the sheet’s handled by researchers. View information on Coronavirus (COVID-19). Fill in your details below or click an icon to log in: You are commenting using your WordPress.com account. Jade 403 They will then be restacked in the presses and subjected to proper drying. Herbarium which has over 5,000,000 specimens and the New York Botanical Garden with over 7,000,000 specimens. This superior paper is off-white with a moderately textured surface for excellent adhesion of mounting strips or adhesive. }?^Q��s'�
qK�&���7.�#�� ���E����lj��=?����Y��kKZ��B�/�?�h����L��(+Zg�ޯ���9�E#4�I���G� The pressing of the specimens is also started in the field by Email: HerbariumUnit@sta.uwi.edu. technical assis\anl~ arc mounting material from widely different plan! ��Џ����r\`�f�Ldgm[��N�"Xp�O1dY�=�ў�
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Lineco Neutral PH White Adhesive (Adhesive not tested), Adhesive – Vinyl acetate/ethylene copolymers National Herbarium of Trinidad and Tobago - Once plant specimens have been collected they must be dried, pressed and disinfested before they can be mounted on herbarium sheets. endobj
On return to the laboratory the specimens will be examined, sorted, re-arranged in their folders and the field notes checked.
R-2258, Adhesive – Ethylene/vinyl acetate copolymers A method of mounting pressed herbarium specimens using liquid plastic and stacking the sheets while drying is described.
Understanding material characteristics and their deterioration was a core concept in my conservation training. At present, new specimens are attached to herbarium sheets using linen tape, a process that’s effective, but very time consuming.
groups, at limited bench space. ( Log Out /
In addition to these archival requirements, the adhesive I was looking for also needed to have other practical properties. *h��7�\'\!�J���{4�E,F���o` �ip�
�*�Z|l�w_�1�Ҽ�E��C��bV�ǻ� �M����VӢ��⹚=ڕ���5��0�+'K'�4�hZ)"�` A neutral pH keeps the surrounding substrate from becoming acidic, turning yellow, and prematurely aging. %PDF-1.5
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Often it is better to identify the specimens before mounting, as it is easier to examine parts under the microscope then. These adhesives have both great workability properties in the lab and long-term preservation qualities. <>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>>
The drying prevents deterioration of the material, and is often started in the field by placing each specimen in a newspaper folder. When the specimens have dried in the laboratory sufficiently they will be decontaminated by deep freezing for a week to kill all stages of insects with which they may be infested. Having the best possible adhesive is critical because every year the botany team adds more than 5,000 specimens to the museum’s National Herbarium of Canada which includes more than 650,000 herbarium sheets in the vascular plant collection. Yes, can you please share your results – of if you published an article on this? <>
They have stood the test of time while remaining strong, flexible, neutral, and exhibiting minimal yellowing. The procedures outlined in this publication for the preparation of herbarium speci-mens are intended for the beginner and the amateur who are just starting the pressing and mounting of plants for a herbarium.
Our finest archival quality 100% Rag Herbarium Mounting Paper. endobj
�j�y:�5��a����(]��6��f0n�rD��D�ZXG!t ��ۣ�5��e�VS6���@Y�膙|���!��k7R�q�z�u�Y��kFs�LG.��XJY�d�d^d�T4�� ��ʄ���f'��R;$F�^8j�8,��`��f�(^�3z��ܪ8ʸ7X`���i��VrI{��z�tGM\Z �:F���!���� Botanists and other herbarium professionals use this paper exclusively for mounting plant specimens using Lineco neutral pH adhesive.
Mounting: The RHS Herbarium uses acid-free paper, measuring 419 x 266mm (16.5 x 11in). 1 0 obj
To avoid smudging, wash your hands before each mounting session, and as needed during the session. Thanks.
The Canadian Conservation Institute’s long-term study of commercially available adhesives, Adhesive Compendium for Conservation was an invaluable resource. This was a student project.
The results have not been published.
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