RINGER'S SOLUTIONS

Normal:
116 mM NaCl
2.9 mM KCl
1.8 mM CaCl2
5.0 mM HEPES, pH 7.2.

High calcium:
116 mM NaCl
2.9 mM KCl
10 mM CaCl2
5 mM HEPES, pH 7.2.

Calcium free:
116 mM NaCl
2.9 mM KCl
5.0 mM HEPES, pH 7.2