Human Plasma

Ringer

EBSS

HBSS

Kokubo-SBF

Tas-SBF

Na⁺

142

130

143.6

138

142

142

K⁺

5

4

5.37

6.14

5

5

Ca²⁺

2.5

1.4

1.8

1.26

2.5

2.5

Mg²⁺

1.5

-

0.81

0.81

1.5

1.5

Cl⁻

103

109

125.3

144.8

147.8

125

HCO³⁻

27

-

26.2

4.2

4.2

27

1

-

1

0.78

1

1

0.5

-

0.81

0.81

0.5

0.5

Ca/P

2.5

-

1.8

1.62

2.5

2.5

Buffer

-

-

-

-

Tris

Tris

pH

7.4

6.5

7.2 - 7.6

6.7 - 6.9

7.4

7.4