TM 5-813-8
3
@ 56% ALK = 11.0 x 1.125 = 12.4 KGR/Ft
Figure A-19. Amberlite IR-120 plus capacity correction for alkalinity.
100x = percent of R.W. in P
P - N.B.
x=
R.W. - N.B.
500 - 303 197
=
=
=0.396
800 - 303 497
100x = 0.396
x = 39.6 percent R.W. in P.
100x(1 - .396) = 60.4 percent N.B. in P.
The blended potable water has a Langelier Index of + 0.65, which produces a slight scaling tendency for distribution
system corrosion protection.
A-25
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