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Manganese is not present in natural waters but it is found in various salts and minerals frequently associated with iron compounds. Manganese salts are used as fertilizer additives, in ferroalloys (in steel manufacture), in nonferrous alloys as it improves their corrosion resistance and hardness.
The HANNA test kit determines manganese concentration via a checker disc. The reaction between manganese and reagents causes a violet tint in the sample which is proportional to the manganese concentration.
HI 38042 test kit comes with 100 packets of buffer reagent A, 100 packets manganese reagent B, checker disc, glass vials with caps (2) and 3 mL plastic pipette.