Metrosep Anion Dual 4 – 100 (6.1016.030)

The Metrosep Dual 4 columns are based on a newlydeveloped carrier material, namely a functionalized monolith based on silica gel.The monolith allows aflow rate of the eluent up to 5 mL/min. The column is characterized by small back-pressure despite the high flow rate. In contrast to traditional materials the monolith has a much larger surface due to its structure of macropores and mesopores. This results in a high capacity of the column and a very small dead volume.The Metrosep Dual 4 – 100 is suitable for a greatnumber of applications. Thus all standard anions can be separated in less than nine minutes. The high column capacity makes it to a large extent insensitive to matrix influences. Even in a matrix of 3 g chloride, nitrate and sulfate 0.5 µg/L perchlorate are detectable. It is therefore used in the analysis of perchlorate according to the EPA standard 314.The column may be used with or without chemicalsuppression. It is recommended to install the RP Trap Column (6.1014.100) between the pulsation absorber and the injection valve if p-cyanophenol is used as an eluent. Technical information Carrier materialMonolithic silica gel Column dimensions100 x 4.6 mm Column bodyPEEK Standard flow2.0 mL/min Maximum flow5.0 mL/min Maximum pressure20 MPa Particle sizeMonolith with 2-µm macroporesand 13-nm mesoporesOrganic modifier0...5% pH range2...8 Capacity90 µmol (Cl Applications •rapid separation •complex sample matrices •EPA 314 •detection of perchlorate
– ) Eluent p-Cyanophenol eluentp-Cyanophenol2859 mg/2 L12.0 mmol/L (standard eluent)KOHpH = 7.5 ±0.1 48