Membrane filters

LABSOLUTE® offers a wide selection of membrane filters for microfiltration. You can choose between several membrane materials, diameters and pore sizes. Usage of membrane filters is recommended both for filtration of air and fluid and is optimally suited in particular for retention of very small particles. Precisely defined micro pores and exceeding stability - this combination makes it a good choice for applications in the microbiological sector, as well as in the pharmaceutical, food and water analysis industry.

Cellulose acetate membranes are characterized by an extraordinary high flow capacity and dimensional stability. The filters have good thermal resistance and can be used in various applications.

• Hydrophilic
• Low protein binding capacity
• Maximum operating temperature: 135 °C
• Non-sterile
• Autoclavable at 121 °C

Accessories Buchner funnels, porcelain Alternative Nitrocellulose membrane filters, white Alternative Nitrocellulose membrane filters, grid pattern Alternative Regenerated cellulose membrane filters, white Alternative Polycarbonate Track Etched (PCTE) membrane filters, white

The uniform pore structure of the LABSOLUTE® nitrocellulose membranes allow high throughput and diffusion rates and guarantee ultrapure and consistent results due to a very low extent of extractables.

• Hydrophilic
• High protein binding capacity
• Maximum operating temperature: 180 °C
• Autoclavable at 121 °C

- Non-sterile

Accessories Buchner funnels, porcelain Alternative Nitrocellulose membrane filters, grid pattern Alternative Cellulose acetate membrane filters, white Alternative Regenerated cellulose membrane filters, white Alternative Polycarbonate Track Etched (PCTE) membrane filters, white

The uniform pore structure of the LABSOLUTE® nitrocellulose membranes allow high throughput and diffusion rates and guarantee ultrapure and consistent results due to a very low extent of extractables.

• Hydrophilic
• High protein binding capacity
• Maximum operating temperature: 180 °C
• Autoclavable at 121 °C

Membranes featuring a grid pattern are ideally suited for determination of colony count, particle analysis and microscopy. Differently coloured filters guarantee a best possible contrast and easy colony counting.

• Sterile and non-sterile

Accessories Buchner funnels, porcelain Alternative Nitrocellulose membrane filters, white Alternative Regenerated cellulose membrane filters, white Alternative Polycarbonate Track Etched (PCTE) membrane filters, white Alternative Cellulose acetate membrane filters, white

LABSOLUTE® offers a wide selection of membrane filters for microfiltration. You can choose between several membrane materials, diameters and pore sizes. Usage of membrane filters is recommended both for filtration of air and fluid and is optimally suited in particular for retention of very small particles. Precisely defined micro pores and exceeding stability - this combination makes it a good choice for applications in the microbiological sector, as well as in the pharmaceutical, food and water analysis industry.

Filters made of regenerated cellulose membrane provide excellent resistance to almost all kinds of organic solvents and high temperatures.

• Hydrophilic
• Low protein binding capacity
• Maximum operating temperature: 134 °C
• Non-sterile
• Autoclavable at 121 °C

Accessories Buchner funnels, porcelain Alternative Cellulose acetate membrane filters, white Alternative Nitrocellulose membrane filters, white Alternative Nitrocellulose membrane filters, grid pattern Alternative Polycarbonate Track Etched (PCTE) membrane filters, white

LABSOLUTE® offers a wide selection of membrane filters for microfiltration. You can choose between several membrane materials, diameters and pore sizes. Usage of membrane filters is recommended both for filtration of air and fluid and is optimally suited in particular for retention of very small particles. Precisely defined micro pores and exceeding stability - this combination makes it a good choice for applications in the microbiological sector, as well as in the pharmaceutical, food and water analysis industry.

PCTE membrane filters are produced in a two-step manufacturing process which complies with high quality standards. The membrane consists of a thin PC film with precisely defined pores ensuring ultrapure and consistent filtration results.

• Hydrophilic
• Low protein binding capacity
• Maximum operating temperature: 140 °C
• Non-sterile
• Autoclavable at 121 °C

Accessories Buchner funnels, porcelain Alternative Cellulose acetate membrane filters, white Alternative Nitrocellulose membrane filters, white Alternative Nitrocellulose membrane filters, grid pattern Alternative Regenerated cellulose membrane filters, white

White. Very low content of extractable materials. Weight constant after 60 minutes of drying at 105 °C. Suitable for residue analysis, microscopic viewing in incident or transmitted light, chemotaxis, x-ray fluorescence, spectrometry and gravimetric analysis. Autoclavable at 121 °C. Other pore sizes and formats are available on request.

Alternative Membrane filters, cellulose acetate Alternative Membrane filters type 113, cellulose nitrate, sterile Alternative Membrane filters type 111, cellulose acetate, sterile

Housing made of PP.

The membrane filters suitable for use in the Microsart™ e.motion are individually sterile-sealed,without protective paper on top of each filter, in a specially designed individual package on a band. For complete traceability, the membrane filter type, diameter, lot number and a unique serial number are printed on the package of each membrane filter unit.

All Microsart membrane filters are "multi-fit" and can be used in all standard dispenser systems.

The membrane filters have a diameter of 47 mm or 50 mm, and are white, green or grey with a high-contrast 3.1 mm grid.

Alternative Membrane Filters Microsart™ e.motion, High Flow

White membrane with black grid, for detection of bacteria with dyed media, particle count & microscopy, individually, sterile packaged / non sterile.

Alternative Membrane filters, type 139, cellulose nitrate Alternative Membrane filters type 138, cellulose nitrate Alternative Membrane filters Type 130, cellulose nitrate Alternative Membrane Filters Microsart™ e.motion

Housing made of PP.

Gray membrane (after wetting, black) with white grid, for detection of yeasts and molds, particle count and microscopy, individually, sterile packaged / non sterile.

Alternative Membrane filters type 138, cellulose nitrate Alternative Membrane filters, type 139, cellulose nitrate Alternative Membrane filters, type 114, cellulose nitrate

Green membrane with dark-green grid, providing optimal contrast to light-colored or transparent bacteria colonies, individually, sterile packaged / non sterile.

Alternative Membrane filters Type 130, cellulose nitrate Alternative Membrane filters, type 139, cellulose nitrate Alternative Membrane filters, type 114, cellulose nitrate

Type 111. Resistant to steam sterilisation up to 134 °C, or in dry heat up to 180 °C. Very low adsorption (important when filtering proteinaceous solutions). Suitable for particle removal and ultracleaning of aqueous solutions, methanol, ethanol, high-grade alcohols and residue analysis of fuels and oils. The extractable content of these filters make up <1% of their weight. Other pore sizes and formats available on request.

Alternative Membrane filters type 113, cellulose nitrate Alternative Membrane filters type 111, cellulose acetate, sterile Alternative Membrane filters type 113, cellulose nitrate, sterile

Applications:

• Excellent for gravimetrical analysis
• Especially for aqueous solutions
• Ideally suitable for contamination test

Properties:

• Economical
• Constant weight
• Hydrophilic
• Not sterile
• Can be used up to 125 °C
• Autoclavable up to 121 °C

White membrane with green grid, for detection of bacteria with dyed media, particle count and microscopy, individually, sterile packaged / non sterile.

Alternative Membrane filters Type 130, cellulose nitrate Alternative Membrane filters type 138, cellulose nitrate Alternative Membrane filters, type 114, cellulose nitrate

SafetySpace™ Filter Tips leave more space between the sample and the filter than conventional filter tips. This allows pipetting any type of liquid or using any pipetting technique without the risk of the precious sample absorbing into the filter. In effect, this secures 100 % sample recovery and thus greater accuracy. Particularly suitable for pipetting foaming liquids such as buffers and proteins, pipetting solvents, multiple dispensing functions of electronic pipettes, reverse pipetting. Certified DNase, RNase and endotoxin free.

Hydrophilic, durable and compatible with a wide range of aqueous solutions, organic solvents and for the filtration of biological preparations and media. Autoclavable at 121 °C.

The membrane filters suitable for use in the Microsart™ e.motion are individually sterile-sealed,without protective paper on top of each filter, in a specially designed individual package on a band. For complete traceability, the membrane filter type, diameter, lot number and a unique serial number are printed on the package of each membrane filter unit. Specially developed pore structures of the 0.45 ìm high Flow membrane filters permit faster filtration based on their high flow rates and throughputs.

All Microsart membrane filters are "multi-fit" and can be used in all standard dispenser systems.

The membrane filters have a diameter of 47 mm or 50 mm, and are white, green or grey with a high-contrast 3.1 mm grid.

Type 230. Polycarbonate (PC), white, non-sterile. Ultrapure, polycarbonate membrane with especially smooth surface and fine pore distribution. Applications include COD/TOC testing, particle analysis or epifluorescence microscopy.

Alternative Membrane filters, Polyamide

• spontaneously wetted, very good wet-strength
• high chemical resistance, useful for aqueous and organic media
• hydrophilic
• can be used up to 180 °C
• sterilisable by all methods
• suitable for use as sterile filter to ASTM-D 3862-80

Application: For the sterilisation and particle filtration of aqueous and organic solutions

Alternative Membrane filters, Grade OE, made from cellulose acetate

Standard Grade Regenerated Cellulose (RC) is a clear, flexible and sturdy dialysis tubing. This tubing is ideal for a broad range of applications in which there is a significant size difference between the MW species being separated, including sample preparartion, desalting, buffer exchange, pH change, protein purification. Offering a good chemical compatibility, Standard Grade RC can be used with dilute strong acids and bases, concentrated weak acids and bases, most alcohols and some mild or dilute organics, including DMSO. Standard RC can tolerate pH 2 to 12 and temperatures 4 to 121 °C
RC dialysis tubing supplied dry with glycerol humectant for easy handling and manipulation. Soak in DI water for 30 minutes to remove glycerol. Contains trace levels of heavy metals and sulphides.

Spectra/Por® 1, 3 und 4:	For standard dialysis, different MWCO and flat widths
Spectra/Por® 2:	Dialysis Tubing with higher permeability

Plain white. Circles.
Application

• For prefiltration and dust measurement, clarification and filtration
• Filtration of aqueous solutions

Properties

• Very easily wettable
• Hydrophilic
• Used up to 125 °C
• Autoclavable (121 °C)

Type 250. Polyamide, white. For filtration of alkaline solutions and organic solvents.

Alternative Membrane filters, blotting, Polycarbonate

These cellulose mixed ester membranes are reinforced with a polyester fabric. Their filtration properties are very similar to membranes PORAFIL^® CM, however, they are mechanically much more stable.

Specifications
pH measuring range:	-2.000pH to +20.000pH -2.00pH to +20.00pH -2.0pH to +20.0pH
Accuracy (±1digit):	± 0.003 ± 0.01
mV measuring range:	-1999.9mV to +1999.9mV; -1999mV to +1999mV
Accuracy (±1digit):	± 0.2mV ± 1mV
Temperature measuring range:	-10.0°C to + 120.0°C
Accuracy (±1digit):	0.1°C
ISE measuring range:	0.000 to 10000mg/l
Only ProLab 2000:
Conductivity measurement:	0,000µS/cm to 2000mS/cm
O2 concentration:	0 to 20.00mg/l x 0.01mg/l