Table 3.

Effects of salts on virus adsorption to microporous filters at pH 3.5a

FilterVirus% Virus adsorption
BufferBuffer containing 0.1 M NaClBuffer containing 0.1 M MgCl2Buffer containing 0.1 M AlCl3
Millipore HAMS2>99 Ab >99 A>99 A>99 A
φX17498 A>99 A>99 A>99 A
Poliovirus 1>99 A>99 A>99 A>99 A
Mean>99>99>99>99
FiltriteMS2>99 A98 AB>99 A96 B
φX17495 A97 A98 A23 B
Poliovirus 199 A>99 A97 A10 B
Mean98989843
WhatmanMS23 A4 A3 A4 A
φX1746 A2 A2 A4 A
Poliovirus 19 A7 A5 A7 A
Mean6435
1MDSMS295 A60 B44 C5 D
φX17485 A75 B73 B10 C
Poliovirus 199 A95 A93 A10 B
Mean93767014
  • a We added approximately 105PFU of virus to 25-ml portions of buffer, buffer containing 0.1 M NaCl, buffer containing 0.1 M MgCl2, and buffer containing 0.1 M AlCl3, and each type of solution was passed through the different types of filters at a rate of 1.5 ml/s. The numbers of viruses in the influent and effluent were measured in order to determine the percentage of adsorption in each case.

  • b Values on the same line followed by the same letter are not significantly different at P = 0.05.