Acid Test Pen
Many types of paper and ephemera have acid in them. Overtime this acid can damage other parts of your scrapbook memories by fading them or yellowing them. An Acid Test Pen can easily be used to tell if there is a damaging amount of acid in something that you want to put in your scrapbook. If there is, don’t worry, you can still use them, but it will be important to turn it into a sticker, or to place it in a protective plastic pocket before putting it in your scrapbook.