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 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.
Spectrum offers 3 different functional closure types (Standard, Weighted & Magnetic Weighted) as well as a
functional combination pair of closures (Standard & Weighted).
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.
Since Spectra/Por Standard Closures float, they aid in buoyancy and
vertical orientation when applied to the tubing top end. Autoclavable
and available in a variety of colors for easy sample identification.
| Product Specifications |
| Functional Benefit: | Sample buoyancy & vertical orientation |
| Membrane Types: | Standard RC only |
| 5 Sealing Widths: | 12 mm, 23 mm, 35 mm, 55 mm, 75 mm |
| 4 Colors: | Orange, white, green, blue |
| Qty: | 10/pkg |
| Material: | Polypropylene |
| Temperature: | 0 - 121°C (autoclavable) |
Autoclavable, Spectra/Por Weighted Closures encase an acid-
washed, fluorocarbon coated, stainless steel bar. When applied to
bottom end of the dialysis tubing, the Weighted Closure acts like an
anchor to maintain a vertical orientation of the sample.
| Product Specifications |
| Functional Benefit: | Weighted for vertical sample orientation |
| Membrane Types: | Standard RC only |
| 5 Sealing Widths: | 12 mm, 23 mm, 35 mm, 55 mm, 75 mm |
| 1 Color: | White |
| Qty: | 10/pkg |
| Material: | Polypropylene |
| Temperature: | 0 - 121 °C (autoclavable) |
Autoclavable Spectra/Por Magnetic-Weighted Closures contain a
magnetic fluorocarbon coated stainless steel bar, eliminating the need
for conventional stir bars. Applied to the bottom end of the dialysis
tubing, this closure provides complete submersion and gentle rotation
of the sample on a stir plate.
| Product Specifications |
| Functional Benefit: | Weighted & magnetic for submersion & stirring |
| Membrane Types: | Standard RC only |
| 5 Sealing Widths: | 12 mm, 23 mm, 35 mm, 55 mm, 75 mm |
| 1 Color: | Red |
| Qty: | 2/pkg |
| Material: | Polypropylene |
| Temperature: | 0 - 121 °C (autoclavable) |
The ultimate sample buoyancy and vertical orientation can be
achieved by applying both a Standard and a Weighted Spectra/Por
Closure to opposite ends of the same dialysis tubing. The Paired Closures
are autoclavable.
| Product Specifications |
| Functional Benefit: | Buoyancy and vertical orientation |
| Membrane Types: | Standard RC only |
| 5 Sealing Widths: | 12 mm, 23 mm, 35 mm, 55 mm, 75 mm |
| 2 Colors: | Orange (standard) and White (weighted) |
| Qty: | 10 standard & weighted pairs/pkg |
| Material: | Polypropylene |
| Temperature: | 0 - 121 °C (autoclavable) |
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