Table 1.

Effects of salts on virus adsorption to microporous filters at pH 7a

FilterVirus% Virus adsorption
BufferBuffer containing 0.1 M NaClBuffer containing 0.1 M MgCl2
Millipore HAMS28 Ab 18 B99 C
PRD-16 A8 A59 B
φX1744 A40 B57 C
Poliovirus 13 A98 B99 B
Mean541 79
FilteriteMS26 A21 B23 B
PRD-111 A9 A10 A
φX1743 A3 A5 A
Poliovirus 110 A9 A99 B
Mean711 34
WhatmanMS218 A12 A19 A
PRD-17 A3 A6 A
φX1745 A9 A38 B
Poliovirus 18 A6 A5 A
Mean108 17
1MDSMS296 A10 B7 B
PRD-197 A13 B13 B
φX17429 A12 B18 C
Poliovirus 179 A7 B9 B
Mean7511 12
  • a We added approximately 105PFU of virus to 25-ml portions of buffer, buffer containing 0.1 M NaCl, and buffer containing 0.1 M MgCl2, 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.