TABLE IV. SOLUTIONS OF TYPE IV. 



Partial volume-molecular concentrations and molecular proportions of 

 K2SO4, C^(H2P04)2, and Mg(N03)2 in 21 solutions all having a calculated 

 osmotic value of approximately 1.00 atm. at 25 °C., but differing (by in- 

 crements of % ) in salt proportions. 



The highest partial volume-molecular concentrations of the salts of this 

 table, that may be used in stock solutions (mixed) without change in the 

 molecular proportions, are obtained, in each case, by multiplying each value 

 given in the table by the factor 4.20. One liter of each of these strongest 

 stock solutions, properly diluted with distilled water, will make 4.20 liters 

 of nutrient solution with an osmotic value of approximately 1.00 atm. at 

 25 °C. Instead of 4.20, the factor 3.00 is used, however (see Table X). 



Molecular Proportions. 



Partial Volume-molecular Concentrations. 



33 



