Lovibond launches M172 arsenic free fluoride ion SpaDNS AF reagent, non-toxic and safer

SpadnsReagent colorimetric method

Fluorine ion SpaDNS reagentcolorimetryCompliant with the American Public Health Association's water and wastewater testing method APHA Method 4500-F and US EPA 13A. Applicable toRaw water and drinking waterRegular rapid fluoride ion testing in laboratories or water sources.

SpaDNS reagent is a red liquid, which forms a bond with zirconiumRed complexIn water samples containing fluoride ions, fluoride ions combine with zirconium, causing the SpaDNS reagent to fade. The higher the concentration of fluoride ions, the lighter the color of the water sample with SpaDNS reagent added.

The interfering ions that affect SpaDNS reagent colorimetric method include alkalinity, residual chlorinechloride ionAluminum ions, chromaticity, turbidity, etc. ForDrinking water and raw waterFluoride ion testing only needs to be consideredresidual chlorineThe interference. The Lovibond M170 method uses traditional SpaDNS reagents with the addition of arsenic saltsIt can block the interference of 5 mg/L residual chlorine. howeverArsenic compounds are toxicIngredients pose a safety hazard to operators.

Lovibond newly launchedM172 arsenic free fluoride ion SpaDNS AF reagentUsing non-toxic residual chlorine shielding agent, it can shield the interference of 12 mg/L residual chlorine and does not contain toxic arsenic compoundsColorimetric method is simple and economicalAt the same time as its advantages, it reduces the health risks to operators.

M172 methodNo mandatory requirement for calibration before testingOnly when high accuracy is required for testing, users can choose calibration.

The M172 method has been integrated into the Lovibond XD series spectrophotometer, and the MD600 and MultiDirect multi parameter photometers will add this program in the next software update. Prior to this, users can add multi parameter curves by adding a new program if needed.