This paper reports on some properties of various adhesive tapes and heat-set tissues that were tested to help understand their stability and impact on paper. The tested properties include: pH of fresh products; colour change of the products (carrier side) and of the paper substrates to which they were attached (reverse side) after thermal aging; photographic activity test (PAT); mechanical and solvent removal of the products from 1870s commercial printing paper and resin-coated photographic (RC) paper before and after thermal aging and after 1 year of dark aging. Only one product discoloured the paper substrate on the reverse significantly after thermal aging, but several product carriers discoloured substantially. Only 40% of the products passed the PAT. Fresh products were generally neutral, but a few were slightly alkaline or acidic. Generally, products were easier to remove from the RC paper than from the 1870s commercial printing paper. Aging tended to decrease removability, although several products did not change drastically on aging. A discussion of the results identifies a few products that have scored well overall so far, but aging continues and results must be considered in this light.