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4” Reusable Bio-Cylinder System




Cat# RBS

The Reusable Bio-cylinder System (RBS) is a 1/4” heavy wall cylinder mold, with an engineered Cylinder Saver Liner  (CSL), and a Cylinder Saver Insert (CSI) which minimizes friction, allowing specimen to easily separate from mold.

Reduce actual mold cost by 75%

Deslauriers' Reusable Bio-cylinder System Heavy Wall cylinder molds have been used over 100 times.

System comes packaged four (4) molds per carton with liner and insert installed, and domed lid attached.

  • Conforms to ASTM C-470 specifications.
  • No special equipment needed (small hand air pump will suffice).
  • Bio-degradable.
  • Replacement liners, inserts, and lids are available separately



"I have recently used "the cylinder saver" when testing flowable fill concrete. The ability to slip the samples out was astonishing. It maintained the specimen's integrity. We had been using split 4 x 8 cylinder molds and placing a 4" diameter band to keep the mold together. This mold is what I consider a "state of the art" mold for testing flowable fill, whether it is regular gray flowable or a colored flowable."



Frank A. Kozeliski, P.E., F.A.C.I.
President and Materials Engineer