5. mm to phi conversion US StandardGrain sizeGrain sizeCum %Sieve Sizemmphi 40-2.250.4827102.00-115.4102200.840.930.4046400.421.2549.9265600.25259.3670800.1772.561.40261200.125377.45731400.1053.2578.01831700.0883.580.41352000.0743.7585.6588>200200200200200200200200200200