Sterisil Straw 

All-In-One Dental Microbiological Cartridge

  • 1 year of continuous use with distilled water; Part # S365
  • 1 year of continuous use with good quality tap water; (recommended > 100 ppm TDS) Part #S365m
  • Only product to include automatic shock treatment upon initial use for optimum control of bacteria
  • Works with any size water bottle, BioFree® Bottle recommended
  • Eliminates need to empty bottles, purge and air dry lines at night
  • Easy annual replacement takes only 1 minute of your time, no tools required
  • FDA Cleared
  • EPA Reg. No 83315-2

Sterisil Straw continuously disinfect dental unit water lines for 365 days.

Sterisil Straw and Antimicrobial Bottle are the solution to transitioning from daily tablets to a single yearly change out. The Sterisil Straw works 365 days tostrawsticker continuously disinfect dental unit water lines while providing safe and clean water for your patients, staff, and dental unit.

Simply remove your existing pickup tube, and install the new pickup tube with the Sterisil Straw on the barb fitting. Distilled or purified municipal water is recommended for optimum product performance and dental composite bonding.

Resources: Sterisil Straw

  • FAQ
  • Part #
  • Video
  • How do I change out the old Sterisil® Straw for a new one? +

    Remove bottle. While holding down the collet at the end of the Sterisil® Straw, gently pull the ¼”pick-up tube away from the Sterisil® Straw. You are now ready to install the new Sterisil® Straw, make sure to firmly push the pick-up tube all the way into the new Sterisil® Straw.
  • Why is my Straw preventing water flow and seems clogged? +

    If using the Sterisil® Straw for use with distilled water (S365), the use of tap water may cause contaminates in the tap water to react with the resin and precipitate onto the submicron filter hence causing the flow to decrease.  It is recommended to use the Sterisil® Straw for municipal water (S365m) if using tap water.  Also, please make sure the blue 1/4" pick-up tube is pushed all the way into the Sterisil Straw.  
  • Does the type of water I use matter? +

    Sterisil® only recommends using distilled water for use with the Sterisil® Straw for use with distilled water (S365). Good quality tap water may be used with the Sterisil® Straw for municipal water (S365m).  If you are unsure of the quality of your water, tap water should be tested first by Sterisil® to evaluate tap water quality.
  • Why is my bottle only empting part way? +

    The blue ¼” pick-up tube is not completely fitted into the Sterisil® Straw and an air gap may exist allowing air to bypass the Sterisil® Straw. To obtain a good air seal simply push the Sterisil® Straw completely on the ¼”tubing.
  • Why do I see granules at the bottom of the bottle? +

    If the pre or post filters inside the Sterisil® Straw have been damaged, it is possible for the resin beads to bypass the filter. Also, the life of a S90 is ninety days while the life of the S365 is one year. Replace the Sterisil® Straw as scheduled.
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Part # Product

S365 (replaces BR360, PT360)

365 day-Sterisil® Straw- For Use with Distilled Water


365 day-Sterisil® Straw - For Use with Municipal Water

S90 (replaces BR90, PT90)

90 Day Sterisil® Straw - For Use with Distilled Water


90 Day Sterisil® Straw- For Use with Municipal Water



0.7-1 Liter BioFree® Bottle

2 Liter BioFree® Bottle