Elimination of particles from samples prior to HPLC or other chromatographic analysis is essential in order to maintain the integrity of the chromatography column and to maximise its operating life time. Minisart® syringe filters optimised for sample preparation consist of a polypropylene (PP) housing and membrane components featuring maximum chemical compatibility and minimum extractables to ensure excellent results. Due to the typical range of volumes from less than 1 ml to 100 ml these filters are available in three different diameters with an effective filtration area of 0,12, 1,7 and 4,8 cm².
- Maximum chemical compatibility
- Minimum extractables or leachables
- Low adsorption of analytes
- 100% optical integrity test
Particle removal via filtration prior to analytics substantially increases the lifetime of columns. Minisart® RC is optimised for aqueous liquids as well as solvents and is stable against DMSO, other amides, ketones, esters and ethers. Minisart® NY is exceptionally pure compared to other common polyamide (nylon) filters and competitor products.
For this product raw materials are used which do not interfere with standard analytical methods. The coating-free hydrophobic PTFE membrane used in Minisart® SRP is suitable for venting applications as well as the leachable free clarification of very harsh chemicals.
In addition Minisart® PES offers a combination of hydrophilic PES membrane and PP housing and has a higher chemical compatibility than PES in MBS housing. This makes it suitable for LC-MS sample preparation with methanol contents up to 20%. Furthermore the hydrophobic PES membrane of Minisart® PES- filters is assembled in a gamma-sterilisable PP housing which makes these new venting filters suitable for assembly and gamma sterilisation by the user.