louboutin replica

USP Column Recommendation

The United States Pharmacopeia (USP) is a standard source for many pharmaceutical methods and it specifies columns by packing materials rather than by manufacturer. Find below a list of the recommended PSS columns suitable for methods listed with the USP.

 

 

USP Number

USP Description

PSS Column

L20

Dihydroxypropane groups chemically bonded to porous silica particles, 3 to 10µm in diameter.

PROTEEMA

L21

 

A rigid, spherical styrene-divinylbenzene copolymer, 5 to 10 µm in diameter.

SDV

L22

A cation group resin made of porous polystyrene gel with sulfonic acid groups, about 10 µm in size.

MCX

L23

An ion exchange resin made of porous polymethacrylate or polyacrylate gel with quaternary ammonium groups, about 10 µm in size.

NOVEMA MAX

L25

Packing having the capacity to separate compounds with a MW range from 100 to 5 000 Da (as determined by polyethylene oxide), applied to neutral, anionic and cationic water-soluble polymers.

SUPREMA (30/100 Å), NOVEMA MAX

L33

Packing having the capacity to separate proteins by molecular size over a range of 4 000 to 400 000 Da. It is spherical, silica-based, and processed to provide pH stability.

PROTEEMA (100 Å)

L37

Polymethacrylate gel packing having the capacity to separate proteins by molecular size over a range of 2 000 – 40 000 Da MW.

SUPREMA (30 Å)

L38

Methacrylate-based size exclusion packing for water-solubles.

SUPREMA

L39

Hydrophilic polyhydroxymethacrylate gel of totally porous spherical resin

SUPREMA

L58

Strong cation-exchange resin consisting of sulfonated cross-linked styrene-divinylbenzene copolymer in the sodium form, about 6 to 30µm diameter.

MCX

L59

Packing having the capacity to separate proteins by molecular weight over the range of 5 to 7 000 kDa. It is spherical (5 - 10µm), silica-based, and processed to provide hydrophilic characteristics and pH stability.

PROTEEMA (300 Å)

 

Contact us with any question for additional recommendations or new developments.

 

Download: pdf document.

Latest News

  • PSS Live Webinars +

    Compliant GPC/SEC/IPC and Traceable Results Data security and data integrity are critical aspects for chromatography software users. Understandingthe basic principles Read More
  • New PSS e-book Series +

    Part 1: GPC/SEC Theory and Background Contact us to receive a free copy of PSS e-book Series part 1: GPC/SEC Read More
  • PSS Webcasts (on-demand) +

    PSS Webcasts (on-demand) Duration: 60 minutes, Q&A session included GPC/SEC/GFC Basics This webinar is designed for beginners and scientists who Read More
  • Introducing our new Online Store +

    We are pleased to announce that we will be launching our NEW and IMPROVED PSS online store on November 2nd . You Read More
  • GPC/SEC SYMPOSIUM 2017 +

    October 2-5, 2017 New Orleans, Louisiana The International Symposium on GPC/SEC and Related Techniques is designed for users from all backgrounds Read More
  • 1

catalogleft