What substance can I use to simulate the appearance of milk in the milk bottles in an exhibit? The bottles are collection objects but are being used in a purely theatrical way. Although they are not significant artifacts for my institution, the bottles have been accessioned into the permanent collection and I want to protect them as such. Any ideas, any warnings? ========================================================= Important Subscriber Information: The Museum-L FAQ file is located at http://www.finalchapter.com/museum-l-faq/ . You may obtain detailed information about the listserv commands by sending a one line e-mail message to [log in to unmask] . The body of the message should read "help" (without the quotes). If you decide to leave Museum-L, please send a one line e-mail message to [log in to unmask] . The body of the message should read "Signoff Museum-L" (without the quotes).