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20344

Porapak™ Porous Polymer Adsorbent

matrix Porapak QS, 100-120 mesh, bottle of 75 cc

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form

solid

Quality Level

100

packaging

bottle of 75 cc

parameter

250 °C temp. limit

technique(s)

gas chromatography (GC): suitable

surface area

~550 m2/g

matrix

Porapak QS

particle size

100-120 mesh

density

~0.34 g/mL (free fall density)

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This Item
203432032920328
vibrant-m

20344

Porapak™ Porous Polymer Adsorbent

vibrant-m

20343

Porapak™ Porous Polymer Adsorbent

vibrant-m

20329

Porapak™ Porous Polymer Adsorbent

vibrant-m

20328

Porapak™ Porous Polymer Adsorbent

packaging

bottle of 75 cc

packaging

bottle of 75 cc

packaging

bottle of 75 cc

packaging

bottle of 75 cc

parameter

250 °C temp. limit

parameter

250 °C temp. limit

parameter

250 °C temp. limit

parameter

250 °C temp. limit

technique(s)

gas chromatography (GC): suitable

technique(s)

gas chromatography (GC): suitable

technique(s)

gas chromatography (GC): suitable

technique(s)

gas chromatography (GC): suitable

surface area

~550 m2/g

surface area

~550 m2/g

surface area

~150 m2/g

surface area

~150 m2/g

matrix

Porapak QS

matrix

Porapak QS

matrix

Porapak P

matrix

Porapak P

General description

Porous polymers are the most suitable adsorbent for applications based on the analysis of gases, acids, amines, organics of low carbon number and water. They are best suited for gas chromatography and are basically copolymers of polydivinylbenzene (DVB) which are very porous in nature ranging from mesoporous to microporous.
Porapak porous polymers are spherical beads with consistent particle size, porosity, and surface area that help to insure analytical precision and accuracy.

For more information about any of our adsorbents, please visit sigma-aldrich.com/adsorbents

Application

Porapak™ QS packed column maybe used for gas-solid chromatographic determination of moisture in lyophilized pharmaceutical products.

Footnote

Porapak QS is a silanized version of Porapak Q to reduce surface adsorption.

Legal Information

PoraPak is a trademark of Waters

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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25G
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G W Lyman et al.
Journal - Association of Official Analytical Chemists, 62(1), 71-74 (1979-01-01)
A gas-solid chromatographic procedure is described for the analysis of low levels of moisture in individual lyophilized vials of pharmaceutical products. Dry ethanol, which contains methanol as the internal standard, is injected through the septum of the vial to dissolve
Grob RL and Barry EF.
Modern Practice of Gas Chromatography, 79-83 (2004)
Poole C.
Gas Chromatography, 127-130 (2012)

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