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Dialysis Tubing Closures

Using resealable closures is the preferred method for sealing dialysis tubing without the risk of leaking. Tied knots are nearly impossible to open & re-seal and often result in damaged, leaking membranes. Spectrum offers two classes of Dialysis Tubing Closures, Universal Closures for use with all membrane types and specialized Spectra/Por® Closures with additional functional benefits for use only with Standard Grade tubing.

Universal Closures for All Membrane Types

Features & Benefits
Specially designed with gentle sealing ridges, Universal Closures are the ideal all-purpose closure that creates a reliable seal with all membrane grades, types and thicknesses. Available in a variety of colors for easy sample identification.

For best results, select a pair of closures that has a sealing width 4 to 10 mm longer than the flat width of the dialysis tubing. This assures a proper seal without membrane tearing.

Product Specifications: 1 Type
Functional Benefit:Universal, seals all membrane types
Membrane Types:Biotech CE, RC & PVDF; Standard RC
4 Sealing Widths:50 mm, 70 mm, 110 mm, 150 mm
6 Colors:White, Red, Yellow, Blue, Green, Black
Material:Polyamide 6.6 from Dupont (Nylon)
Operating Temp.:0 - 90°C
Sterilization:Gamma irradiation or ethylene oxide (not autoclavable)

ColorClosure Sealing WidthQty
50 mm70 mm110 mm150 mm


Fundamentals of Dialysis
Membrane Selection Guide
Lab Dialysis FAQs
Chemical Compatibility Chart
Pore Size Chart
Application Notes

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