ESK® Sampling Kits are ideal for on-the-spot environmental sampling. Each kit is sterile and is packaged in an easy-to-open outer wrapper. Choose from 4 different standard pre-fill options: Butterfield’s Solution, Letheen Broth, Neutralizing Buffer, or Buffered Peptone Water. Available in 4ml or 10ml fill and with Puritan’s high-quality polyester swab. The swab is securely attached to the cap and makes a convenient “handle” for great control when sampling. The smaller swab makes it a great choice for surface testing of hard-to-reach places. Once finished, simply place the swab in the tube and cap tightly for transportation to the lab.