6-Aminonicotinamide (6-AN) Stock Solutions (2500 mg/L and 5.5 mg/L)
For a 2500 mg/L stock solution, dissolve 2.5 g of 6-AN in 1 L of FETAX solution. Store at 1°C–9°C. If crystals form, warm on a heating stir plate until dissolved. Ensure temperature has returned to 23°C ± 1°C before use.
For a 5.5 mg/L stock solution, add 2.2 mL of 2500 mg/L 6-AN stock solution to 1 L FETAX solution. Store at 1°C–9°C.
