Commercial-grade fine silver is at least 99.9% pure, and purities greater than 99.999% are available. Typically, purities of 99.995% or higher are used. Hydrobromic acid is available commercially in various concentrations and purities. Moreover, the degree of hydrocarbon recoveries (75% vs 95%) and purities can vary considerably. This results in improved albumin recovery with yields of 90%, and purities of 100%. The improved yields, however, balanced by the lower purities obtained, within the 85% range. The Yang tones were initially staged in the hall of the three purities. Qalb also refers to the second among the six purities or Lataif-e-sitta in Sufi philosophy. This makes it easier to reach higher purities above 95%. Purities as high as 90% are now available. Purities of 99.9999% are routinely achieved and commercially available. Enantiomeric purities in excess of 90% are routine but varies with substrate. Purities of confiscated hashish in Europe (2011) range between 4% and 15%.