Amphibian Ringer’s Solution (200–250 mOsm)
6.6 g NaCl
0.15 g KCl
0.15 g CaCl2
0.2 g NaHCO3
Add the reagents to 1 L of distilled water. The solution may be stored for up to 7 d, or longer if it is autoclaved and stored in sterile containers.
An alternative formulation consists of 6.5 g NaCl, 0.42 g KCl, and 0.25 g CaCl2 added to 1 L of distilled water. Up to 10 g of glucose may be added to either formulation, but this reduces the shelf life of unsterilized solution to 24 h.
Source: Wright (2006).
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