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4SI & 7SI Cartridge


  • Specially designed for ice machines
  • Does not include carbon
  • Reduces sediment and particulate down to 1/2 micron and reduces cyst and Giardia
  • Allows chlorine to pass through which helps reduce slime and bacteria growth inside the ice machine and ice bin
  • Ideal for food service operations where baking of bread and pastries is done on-site
  • NSF Std 42 and 53


  • Scale inhibition
  • Particulate reduction
  • Cyst reduction
Packaging Size Part Number Additional Info
7SI 9606-01 Capacity: 15,000 gallons, 2.0 gpm flow rate
4SI 9606-51 Capacity: 25,000 gallons, 3.5 gpm flow rate


Product Information:

Literature Downloads

Download the product bulletin and other relevant literature here.


Download a low resolution file of the product label here.

Product Safety

RTK Information

2611 Schuetz Rd. St. Louis, MO 63043
  • Telephone: 800.554.5499
  • Email: [email protected]
  • Hours: Mon–Fri: 8:00am - 5:00pm (Central Time)

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