Please use this column with suppressor type ion chromatography system.
Anion standards were analyzed using IC SI-90 4E (a column for anions analysis). For general purpose, it is recommended to use 1.8mM Na2CO3 + 1.7mM NaHCO3 as the eluent. This eluent is best suited to the separation of typical 7 anions, F-, Cl-, NO2-, Br-, NO3-, HPO42-, SO42-.
(How to prepare the eluent) (1) Put 19.08g of reagent grade Na2CO3 and 14.28g of reagent grade NaHCO3 into a 1 liter volumetric flask. (2) Dilute with purified water to make up a 1 liter solution. (3) Dissolve the solution using an ultrasonic vibrator. When the solution volume decrease after the vibration, add pure water to make up exact 1 liter solution. This is the concentrated solution and can be stored for half year in a refregirator with stopper. (4) When making the eluent, take 10ml of the concentrated solution and dilute with purified water to make up 1 liter solution. Pass the eluent through a 0.45μm membrane filter before use.
Column : Shodex IC SI-90 4E (4.0mmI.D. x 250mm)
Eluent : 1.8mM Na2CO3+ 1.7mM NaHCO3 aq.
Flow rate : 1.0mL/min or 1.5mL/min
Detector : Suppressed conductivity
Column temp. : Room temp. (25°C)