1
Make up to 1 Litre with filtered natural seawater. Adjust pH 7.6 - 7.8 to with 1M NaOH or
1M HCl, prior to autoclaving. Autoclave at 15 psi for 15 minutes.
2
Alternatively, use: Distilled water to 1 Litre and “Ultramarine Synthetica” sea salts 33.60g
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