The latest variation was developed by Hao in 1979. This method is significantly simplified compared to the Cohn Process. Its goal is to create high albumin yields as long as albumin is the sole product. Through a two-stage process, impurities are precipitated directly from fractions II and III supernatant at 42% ethanol, pH 5.8, temperature −5 degrees C, 1.2% protein, and 0.09 ionic strength. Fraction V is precipitated at pH 4.8. Fractions I, II, III, and IV are coprecipitated at 40% ethanol, with pH of 5.4 to 7.0, and temperature −3 to −7 degrees C. Fraction V is then precipitated at pH 4.8 and −10 degrees C. The high yields are due to a combination of a simplified process, with lower losses due to coprecipitation, and use of filtration. Higher purities were also achieved at 98% because of the higher ethanol levels, but the yields were lowered with the high purity.