Agilent Technologies 5185 5991 Users Manual 4&15mL Concentrators Instructions 1

5185-5991 50748603-c0c4-4b76-9d3e-a225439d04ae

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5,000 Molecular Weight Cut-Off (MWCO)

4 mL Spin Concentrator, Part No. 5185-5991

5185-5991 5 KDa MWCO 4 mL 5188-2798 5 KDa MWCO 15 mL

5188-5201 30 KDa MWCO 4 mL 5188-2799 30 KDa MWCO 15 mL

5188-5202 50 KDa MWCO 4 mL 5188-2800 50 KDa MWCO 15 mL

Agilent Spin Concentrators for Proteins

Instructions – 4 mL Concentrators

Equipment required 4 mL Spin Concentrators, pack of 25

Centrifuge

Rotor type Swing bucket or Fixed angle

Minimum rotor angle 25°

Rotor cavity To fit 15 mL (17 mm) conical bottom tubes

Minimum effective speed 2,000 g

Recommended speed 5,000 g

Maximum speed 7,500 g

Concentrate recovery

Pipette type Fixed or variable volume

Recommended tip Thin gel loader type

Technical specifications

Concentrator sample volume capacity

Swing bucket rotor 1-4 mL

Fixed angle rotor 1-4 mL

Dimensions

Total Length 122 mm

Width 17 mm

Active Membrane Area 2.0 cm2

Hold-up volume of membrane <10 µL

Dead stop volume 20 µL

pH range pH 1 – 9

Materials of construction

Body Polycarbonate

Filtrate vessel Polypropylene

Concentrator cap Polycarbonate

Membrane Polyethersulfone

Concentrating Proteins with 4 mL Concentrators:

1 Fill concentrator with sample within the working volume

capacity range noted in the table above (ensure that the hinged

lid is fully seated).

2 Insert assembled concentrator into centrifuge (when fixed

angle rotors are used, angle the concentrators so that the

printed windows face upwards/outwards).

3 Centrifuge at recommended speeds, taking care not to exceed

the maximum g force indicated in the table above (20 minutes

at 7,500 g is recommended for 30´ concentration of 4 mL at

10°C).

4 Once the desired concentration is achieved, remove assembly

and recover sample from the bottom of the concentrate pocket

with a pipette.

Desalting/Buffer Exchange

1 Concentrate sample to desired level or at least

5´.

2 Empty filtrate container.

3 Refill concentrator with an appropriate buffer.

4 Concentrate the sample again and repeat the

process until the concentration of the

contaminating species is sufficiently reduced.

Typically three wash cycles will remove 99% of

initial salt content.

See Notes on next page.

30,000 Molecular Weight Cut-Off (MWCO)

15 mL Spin Concentrator, Part No. 5188-2799

05/2004A

Instructions – 15 mL Concentrators

Equipment required 15 mL Spin Concentrators, pack of 10

Centrifuge

Rotor type Swing bucket or Fixed angle

Minimum rotor angle 25°

Rotor cavity To fit 30 x 114 mm conical bottom tubes or

29 x 104 mm round bottom tubes (50mL)

Minimum effective speed 1,000 g

Recommended speed 2,000 g

Maximum speed 3,000 g

Concentrate recovery

Pipette type Fixed or variable volume

Recommended tip Thin gel loader type

Technical specifications

Concentrator sample volume capacity

Swing bucket rotor 2-15 mL

Fixed angle rotor 2-8 mL

Dimensions

Total Length 76 mm

Width 25.5 mm

Active Membrane Area 4 cm2

Hold-up volume of membrane <20 µL

Dead stop volume 50 µL

pH range pH 1 – 9

Materials of construction

Body Polycarbonate

Filtrate vessel Polypropylene

Concentrator cap Polycarbonate

Membrane Polyethersulfone

Concentrating Proteins with 15 mL Concentrators:

1 Fill concentrator with sample within the working volume

capacity range noted in the table above, taking care not to

touch the membrane surface, and then close the hinged lid

(ensure that the lid is fully seated).

2 Place concentrator into 50 mL centrifuge tube (filtrate

collection vessel – not supplied, user must provide).

3 Insert assembled concentrator into centrifuge (when fixed

angle rotors are used, angle the concentrators so that the

printed windows face upwards/outwards). Spin at

recommended speeds, taking care not to exceed the maximum

g force indicated in the table above (20-40 minutes is

common).

4 Once the desired concentration is achieved, remove assembly

and recover sample from the bottom of the concentrate pocket

with a pipette.

Desalting/Buffer Exchange

See 4 mL Spin Concentrator instructions on the reverse side.

Notes:

· Spin concentrators are single use disposable

items. Re-use is not recommended.

· For research use only.

· Select the most appropriate membrane cut-off for

your sample. For maximum recovery, select a

MWCO at least 50% smaller than the molecular

size of the species of interest.

· These concentrators are designed for use with

biological fluids or aqueous solutions only, not

for organic solvents or strong acids or bases.

· Flow rates are affected by MWCO, porosity,

sample size, concentration, viscosity, centrifuge

force, and temperature. Adjust centrifuge force

and time accordingly for your samples.

· Do not autoclave. Sterilize with a 70% ethanol

solution.

For more information or technical assistance, Agilen

t

Technologies, Inc.

please call toll free: 1-800-227-9770 or visit 2850 Centerville Road

our web site at: www.agilent.com/chem/bioreagents Wilmington, DE 19808-1610 USA