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Ready‑to‑use dialysis devices made with proprietary Biotech Grade CE dialysis tubing, pre‑assembled in volume‑specific lengths to maximize convenience, ease of use, and sample recovery.

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SpectraPor® Float-A-Lyzer®

Ready-to-use dialysis devices are all made with proprietary Biotech Grade CE dialysis tubing, pre-assembled with volume specific lengths of membrane tubing and designed to maximize convenience, ease-of-use and sample recovery.

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Product Features

Unique Design

Tubular membrane allows for maximum surface area and minimum volume uptake & dilution. Float ring ensures buoyancy and vertical orientation

Easy to Use

Screw-on cap and pipette provides easy and safe sample loading and in-process testing with no dangerous needles

Total Sample Recovery

Cylindrical shape provides open access for 95-98% sample volume recovery

Broad MWCO Range

9 MWCOs from 0.1 - 1,000 kD for all dialysis applications from small peptides to large nanoparticles

High Purity

Achieve 98% sample purity with Biotech CE membrane, no heavy metal and sulfides

Featured Application

Drug Dissolution: Controlled release for dose determination

USP Apparatus 2 and 4 compatible

SpectraPor® Float-A-Lyzer® Dialysis Device

The SpectraPor® Float-A-Lyzer® Dialysis Device is a unique and leak-proof, ready-to-use device designed for easy and convenient dialysis of small sample volumes from 1 – 10 ml. The device is made with high purity Biotech Grade Cellulose Ester (CE) membrane in 9 MWCOs from 0.1-1,000 kD. Screw cap lid and included pipette allow for easy loading, in-process testing and sample retrieval without the risk of needle punctures.

Biotech CE membrane exhibits a fair chemical compatibility and tolerates pH 2-9 and temp 4-37 °C. Exposure to most organic solvents is not recommended and should be confirmed on the Repligen Chemical Compatibility table.

FEATURES

  • 3 ready-to-use volume sizes (1 ml, 5 ml & 10 ml)
  • 9 Concise MWCO’s for better selectivity & separations
  • High purity Biotech Cellulose Ester (CE) membrane
  • Leak-proof and color-coded screw cap
  • Complete with floatation ring and pipette included
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Three easy steps

  1. Rinse with water 

  2. Load sample

  3. Dialyze

Typical Dialysis Applications for Float-A-Lyzer® Dialysis Devices

  • Drug dissolution and controlled release studies
  • Salt, urea, surfactant and cesiuam removal
  • HPLC sample preparation
  • pH change, buffer exchange and final formulation
  • Purification of Protein, DNA, plasmids, macromolecules, nanoparticles and liposomes
  • Biopolymer purification and removal of monomers
  • Enzyme activity and ligand binding studies
  • DNA and Protein electroelution
Repligen ready‑to‑use dialysis devices made with high‑purity Biotech Grade CE membranes, available in multiple MWCOs and designed for convenient, closure‑free dialysis with excellent sample recovery.

Product Specifications

9 MWCOs Color Code
0.1 - 0.5 kD Green
0.5 - 1 kD Orange
3.5 - 5 kD Black
8 - 10 kD Yellow
20 kD Red
50 kD Violet
100 kD Blue
300 kD Amber
1000 kD Pink
Membrane type Biotech grade Cellulose Ester (CE)
Screw-on cap Open and close for in-process sampling
Color-coded for MWCO
Polypropylene
Silicon O-ring Leak proof and resealable
Flotation ring Device body inserts through center to maintain buoyancy in buffer
Polyethylene
Top/Bottom piece Polycarbonate
Potting Polyurethane
Sample loading Disposable pipette for 5 and 10 ml (included)
Pipette tip for 1 ml (not included)
Package/Quantity Dry with glycerol, 12/package
3 Volume Sizes 1 ml 5 ml 10 ml
Working volume 0.8 ml - 1.3 ml 4.0 ml - 5.5 ml 8.0 ml - 11.0 ml
Total length 5 cm 10 cm 16 cm
Membrane diameter 10 mm 10 mm 10 mm
Top piece diameter 23 mm 23 mm 23 mm
Flotation ring 38 mm 38 mm 38 mm

SpectraPor® Float-A-Lyzer® Dialysis Device Part Numbers

MWCO Color Code 1 ml 5 ml 10 ml Quantity
CE 0.1 - 0.5 kD Green G235025 G235049 G235061 12/pkg
CE 0.5 - 1 kD Orange G235027 G235051 G235063 12/pkg
CE 3.5 - 5 kD Black G235029 G235053 G235065 12/pkg
CE 8 - 10 kD Yellow G235031 G235055 G235067 12/pkg
CE 20 kD Red G235033 G235057 G235069 12/pkg
CE 50 kD Violet G235034 G235058 G235070 12/pkg
CE 100 kD Blue G235035 G235059 G235071 12/pkg
CE 300 kD Amber G235036 G235060 G235072 12/pkg
CE 1000 kD Pink G235037 G235062 G235073 12/pkg

Configurators

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Frequently asked questions | Dialysis

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