●●● ●●●● ●●●●● 3.Apparatus and reagents ●●●● ●●●●● ●●●● Apparatus One set of device to measure the ift with the method of maximum differential pressure Bottle rubber pipette bulb. Reagents N-butyl alcohol (analytically pure), distilled water3.Apparatus and reagents ⚫ Apparatus ⚫ One set of device to measure the IFT with the method of maximum differential pressure,Bottle, rubber pipette bulb. ⚫ Reagents ⚫ N-butyl alcohol (analytically pure), distilled water