Flame Photometer FPM6400A Specific ignition route Simultaneously testing K and NaLiquid petroleum gas (LPG), (Liquid natural gas (LPG) is better) as fuelStability: After 15 seconds injection of samples, indictor drift ≤2%Reproductivity After 7 times testing by standard samples, indicator drift ≤2.5%Linear error: K is 0.02-0.07 mmol/L. Na is 1.1-1.6 mmol/L Flame Photometer FPM6400A