Bio-Rad Gene Pulser Xcell™ Electroporation Systems - Manual (Page 57)

Fig. 5.1. Resistance of solutions (A) NaCl and MgCl
2
and of (B) buffers of NaPO
4
at pH 6.1 and 7.3
and HEPES at pH 7.5. Resistance was measured in 0.2 cm cuvettes containing either 40 µl or 200
µl of solution at room temperature.
51
Concentration (mM)
Concentration (mM)
0 2 4 6 8 10
0 2 4 6 8 10
4000
3500
3000
2500
2000
1500
1000
500
0
3500
3000
2500
2000
1500
1000
500
0
B
A
Sample resistance (ohms)
Sample resistance (ohms)
NaCI (40 µl)
NaCI (200 µl)
MgCI
2
(40 µl)
MgCI
2
(200 µl)
PO
4
6.1, 40 µl
PO 4 6.1, 200 µl
PO 4 7.3, 40 µl
PO 4 7.3, 200 µl
HEPES, 7.5, 40 µl
HEPES, 7.5, 200 µl