Learn how to use this product The IS SK-3S buccal swabs offer a convenient and cost-effective way to store and transport your samples without expensive equipment or transportation. The swabs in our SK range are individually packaged for easy handling and quick use and are available in various pack sizes to suit your needs. The swabs are perfect for BuccalFix Stabilization Tubes, and the SK range of individual swabs is designed to work seamlessly with them.