We recently carried out an experiment on some of our Tuffa Tags to ensure to ensure they can handle being submerged in oil for long periods at a time. We fully submerged a recently printed tag in a container of general purpose motor oil for 2 weeks. After the trial we removed the Tuffa Tags from the oil, put it under some water to clean off the oil and dried the tags with paper towel.
The tag was still clearly legible and able to be written on with a permanent marker. Stay tuned for more experiments to come in the near future.