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[求助] 求理解

1  5mM NaCl, 0.17mM KCl, 0.33mM CaCl2, 0.33mM MgSO4, 10-5 % Methylene Blue.
2  E3 can be made up as a 60× stock (without Methylene Blue). The 1×medium keeps under nonsterile conditions at room temperature for over a week.
3  For 10 litres of a 60× stock solution, mix 172 g NaCl, 7.6 g KCl, 29 g CaCl2.2H2O and 49 g MgSO4.7H2O. Store stock in fridge.
4  Dilute 160ml of 60× stock in distilled H2O (dH2O) to make up 10 litres of E3 (1×), and add 30mlof 0.01% Methylene Blue as a fungicide.
这溶液怎么配的呀,不能理解啊。。。哪位大侠看的懂了,教教我啊
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