Cetco® Tablets – Bentonite Tablets 1/4″, 3/8″, 1/2″

Cetco Bentonite TabletsFor forming a chemically resilient, low-permeability, flexible seal

Cetco® Tablets are organic free, high-swelling pure sodium bentonite compressed into 1/4″, 3/8″ and 1/2″ diameters tablets.  Cetco® Tablets isolate screened intervals of monitoring wells and provide an excellent seal for abandoned boreholes.  The 1/4″ tablets are ideal for tight annular spaces, while the 3/8″ and 1/2″ tablets are useful for larger boreholes.  Cetco® Tablets are certified to NSF/ANSI Standard 60, Drinking Water Treatment Chemicals – Health Effects.


  • Chemically stable
  • Permeability range of 1 x 10-7 to 1 x 10-9 cm/sec
  • Swells to 10-15 times their dry volume when hydrated with fresh water
  • Self-sealing; remains flexible when saturated and will rehydrate
  • Available in 50 lb. pails

NSF Certified