H-minus-ion.org website
Some sample rH (relative hydrogen) scores calculated from ORP and pH, all using the rather universally-accepted formula:
rH
= ((ORP + 200) / 30) + (2 * pH)
which is presented on the page on this site at:
http://www.h-minus-ion.org/rH-score-1.html
which is entitled:
Notes, Comments and Resources on ORP, pH , Relative Hydrogen (rH) Score, Clark’s Rendering of the Nernst Equation for Calculation of rH
Notes on rH scale:
The rH scale runs from 0 to 42; 28 is mid-point
(balance), below 28 is reducing, above 28 oxidizing. An rH of 42
indicates 1 atmosphere (1 ATM) of partial pressure of O and a –42 exponent
partial pressure of H, while an rH of zero (0) indicates 1 ATM partial pressure
of H (adjusted for skewing effects of the H+ [aka “acid”] ion) and a –42
exponent partial pressure of O. Therefore, an rH score of 0 would
indicate maximum possible reducing (antioxidant) power, while a score of 42
would indicate the maximum possible oxidizing environment.
So, rH yields a hydrogen
proton-unbiased measure of absolute reducing potential of a substance;
eliminating effects due to pH. rH is log1/hydrogen parital pressure; a
one unit change in rH indicates a
10X change. E.g., a shift on the Barr scale of rH from a score of 27 to one of
26 indicates a 10X increase in reducing power. rH 28 = H partial pressure
(pp) of 10^-28 atmospheres, an rH 11 = H pp is 10^-11 atmospheres, and a 0 rH
is the rH value of pure hydrogen at STP. Again, as noted above, an rH
score of 0 would indicate maximum possible reducing (aka “antioxidant”) power,
while a score of 42 would indicate the maximum possible oxidizing environment.
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Sample rH (Relative Hydrogen) Scores |
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3.1 |
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# |
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Description
of test |
pH |
ORP |
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rH |
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0 |
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WTW
Standard rH 28 test solution: pH 7, ORP 427 |
7 |
427 |
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34.9 |
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1 |
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TEST
VALUES, ORP OF +500 mv. |
10.0 |
500 |
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43.3 |
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2 |
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TEST
VALUES, ORP OF +500 mv. |
8.0 |
500 |
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39.3 |
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3 |
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TEST
VALUES, ORP OF +500 mv. |
7.0 |
500 |
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37.3 |
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4 |
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TEST
VALUES, ORP OF +500 mv. |
6.0 |
500 |
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35.3 |
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5 |
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TEST
VALUES, ORP OF +500 mv. |
4.0 |
500 |
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31.3 |
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6 |
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TEST
VALUES, ORP OF +500 mv. |
3.0 |
500 |
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29.3 |
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7 |
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TEST
VALUES, ORP OF +200 mv. |
10.0 |
200 |
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33.3 |
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8 |
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TEST
VALUES, ORP OF +200 mv. |
8.0 |
200 |
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29.3 |
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9 |
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TEST
VALUES, ORP OF +200 mv. |
7.0 |
200 |
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27.3 |
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10 |
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TEST
VALUES, ORP OF +200 mv. |
6.0 |
200 |
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25.3 |
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11 |
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TEST
VALUES, ORP OF +200 mv. |
4.0 |
200 |
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21.3 |
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12 |
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TEST
VALUES, ORP OF +200 mv. |
3.0 |
200 |
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19.3 |
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13 |
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TEST
VALUES, ORP OF -200 mv. |
10.0 |
-200 |
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20.0 |
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14 |
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TEST
VALUES, ORP OF -200 mv. |
8.0 |
-200 |
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16.0 |
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15 |
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TEST
VALUES, ORP OF -200 mv. |
7.0 |
-200 |
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14.0 |
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16 |
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TEST
VALUES, ORP OF -200 mv. |
6.0 |
-200 |
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12.0 |
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17 |
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TEST
VALUES, ORP OF -200 mv. |
4.0 |
-200 |
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8.0 |
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18 |
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TEST
VALUES, ORP OF -200 mv. |
3.0 |
-200 |
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6.0 |
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19 |
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TEST
VALUES, ORP OF -400 mv. |
10.0 |
-400 |
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13.3 |
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20 |
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TEST
VALUES, ORP OF -400 mv. |
8.0 |
-400 |
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9.3 |
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21 |
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TEST
VALUES, ORP OF -400 mv. |
7.0 |
-400 |
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7.3 |
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22 |
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TEST
VALUES, ORP OF -400 mv. |
6.0 |
-400 |
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5.3 |
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23 |
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TEST
VALUES, ORP OF -400 mv. |
4.0 |
-400 |
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1.3 |
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24 |
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TEST
VALUES, ORP OF -400 mv. |
3.4 |
-400 |
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0.1 |
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25 |
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TEST
VALUES, ORP OF -820 mv. |
12.5 |
-820 |
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4.3 |
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26 |
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TEST
VALUES, ORP OF -820 mv. |
11.0 |
-820 |
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1.3 |
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27 |
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TEST
VALUES, ORP OF -820 mv. |
9.0 |
-820 |
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-2.7 |
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28 |
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TEST
VALUES, ORP OF -820 mv. |
7.0 |
-820 |
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-6.7 |
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29 |
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Electrolyzed
Reduced Water (ERW), strong |
12.0 |
-823 |
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3.2 |
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30 |
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Electrolyzed
Reduced Water (ERW), medium |
9.8 |
-240 |
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18.3 |
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31 |
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Electrolyzed
Reduced Water (ERW), weak |
9.0 |
-175 |
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18.8 |
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32 |
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Reduced
water from Mg Magic Jugs |
5.9 |
-456 |
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3.3 |
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33 |
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Activated
EM, b.5M, at 22 hours at 94 degrees F |
4.3 |
-340 |
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3.9 |
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34 |
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Activated
EM, b.5M, at 28 hours at 94 degrees F |
4.2 |
-448 |
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0.1 |
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35 |
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Activated
EM, b.5M, at 31 hours at 94 degrees F |
4.0 |
-340 |
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3.3 |
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36 |
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Activated
EM, b.5M, at 5 days at 94 degrees F |
3.9 |
15 |
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15.0 |
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37 |
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Activated
EM, b.5M, at 14 days at 94 degrees F |
3.4 |
20 |
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14.1 |
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38 |
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Activated
EM, b.6, at 31 hours at 96 degrees F |
5.0 |
-501 |
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-0.1 |
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39 |
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SAEM-high
concentration/ratio |
3.6 |
-322 |
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3.1 |
Notes:
where
ORP or Eh or Eo or E = ORP in millivolts, 1.23 refers to potential of oxygen
under 1 atm pressure, rH is defined as the negative logarithm of the oxygen
pressure Po, or:
rH = -log Po
rH yields a hydrogen proton-unbiased measure of absolute
reducing potential of a substance; eliminating effects due to pH.
rH is log1/hydrogen pressure; a 1 unit change in rH = 10X
change. E.g., a shift from 27 to 26 = 10X increase in reducing power.
rH scale runs from 0 to 42; 28 is mid-point (balance), below
28 is reducing, above 28 oxidizing; rH 42 indicates 1 ATM O; rH 0 = 1 ATM H.
In plain English, an rH score of 0 would indicate maximum
possible reducing (antioxidant) power, while a score of 42 would indicate the
maximum possible oxidizing environment; a score of 28 is mid-point.
rH 28 = H partial pressure (pp) of 10^-28 atmospheres; an rH
11 = H pp is 10^-11 atmospheres. 0 rH is rH value of pure H2 at STP.