Lab Tours Columbia recommends that its faculty and staff follow certain best practices during lab tours for all visitors. These best practices include the following: Know who will be visiting the lab and the reason for the visit. Maintain a log of visitors to the lab. Ensure that no confidential or proprietary information is visible at the time of the tour. Prohibit the taking of photographs/video of lab equipment or lab set-up. Do not permit visitors to insert thumb drives or other media into Columbia computers during the tour. Escort visitors throughout the tour.