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农药倍数、浓度与剂量的换算１、制剂的稀释倍数与使用浓度的换算例：计算２．５％敌杀死乳油稀释５０００倍的使用百分比浓度（％）和使用有效浓度（ＰＰＭ）。使用百分比浓反（％）＝２．５％÷５０００＝０．０００５％使用有效浓度（ＰＰＭ）＝２．５％÷５０００×１...
Conversion of multiples, concentrations and dosages of pesticides 1. Conversion ratio of dilution and concentration of preparations: The percentage concentration (%) and the effective concentration (PPM) of 5,000 times dilution of 2.5% Eradication EC were calculated. Use% Concentration (%) = 2.5% ÷ 5000 = 0.0005% Use effective concentration (PPM) = 2.5% ÷ 5000 × 1