If glue is needed , it is recommended that Grade A methyl cellulose mixed with water be used for optimal deterioration resistance .
Samples can be strapped to the paper with linen tape , or glued onto the sheet .
If glue is needed , paper is recommended that Grade A methyl cellulose mixed with water be used for optimal deterioration resistance .
Samples can be strapped to the paper with linen tape , or glued onto the sheet .