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Home > Products > Archival Storage > Envelopes & Folders > Buffered Perma Dur® Negative Envelopes

Buffered Perma Dur® Negative Envelopes

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University Products acid-free Perma/Dur Negative Envelopes feature side seams for even filing and stacking and are constructed using a neutral pH adhesive. The material is ivory coloured Perma/Dur® buffered with 3% calcium carbonate to help retard migrant acidity. Passes Photographic Activity Test.

Code Description Qty Price  
375-4358 Thumb Cut Envelopes
111 x 137mm		 £22.50pack 100
375-4368 Thumb Cut Envelopes
137 x 187mm		 £24.50pack 100
375-4378 Thumb Cut Envelopes
216 x 267mm		 £49.75pack 100

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