Fluoride, Fl

Flouride is analysed with ion chromatography. The ions are separated with an anion change column. Thereafter the background is lowered with a suppressor and detection is made conductometric.

Known issues with the parameter and/or important method changes

No problems reported.

Current methods of measurement

Valid since January 2020
Method: SS-EN ISO 10304-1:2009
Instrument: Metrohm 930 Compact IC Flex with Sample changer 858 Professional Sample Processor with automatic filter.
Remark: Runs on two identical instruments.

Previous methods

2010 – 2019-12 (i.e. partly parallel with the instrument below)
Method: SS-EN ISO 10304-1:2009 
Instrument: Metrohm 881 Compact IC pro with Sample changer 858 Professional Sample Processor with automatic filter

2007-05 – 2012 (i.e. partly parallel with the instrument above)
Method: SS-EN ISO 10304-1 1st ed. (modified).
Instrument: Conductivity detector JD21 series II: Column furnace IC21 series II. Sample changer MIDAS with built-in injector. Elution pump. 

2005-05 – 2007-04
Method: SS-EN ISO 10304-1 1st ed. (modified).
Instruments: Backup: (LDC ConductoMonitor III. Waters 510 (pump). Waters 712 WISP sample changer. Anion exchange column. Waters maxima 820 version 3.30. New instruments: Conductivity detector JD21 series II: Column furnace IC21 series II. Sample changer MIDAS with built-in injector. Elution pump.

1990-01 – 2005-04
Method: Ion chromatography SS-EN ISO 10304-1.
Instruments: LDC ConductoMonitor III. Waters 510 (pump). Waters 712 WISP sample changer. Anion exchange column. PC computer with chromatography software WATERS MAXIMA 820 version 3.30.