The importance of this test is to avoid problems with bugs, disease, and to assure that you are growing food that will benefit your health. Below are a couple charts that show the relative Brix that can be expected.
... Low-Brix plants can’t develop the strong extraction fluids to pull minerals from the soil. As a plant matures, it requires more and more soil energy to extract nutrients from the soil. Reams continually stressed the fact that while a baby seedling had minimal daily nutrient needs from the soil, a mature plant drawing down heavily was an entirely different story. He taught that for a plant to bear a full crop of high quality produce it must have adequate soil energy (called "ERGS" or Energy Released per Gram per Second) available to "set" the high-quality crop and then "bring it home." ERGS is merely a measurement of the ionic conductivity of the soil expressed as microSiemens and directly measured with an ordinary conductivity meter. The point is that only healthy soils with teeming bacterial life and full mineral availability can "keep up" when the plant roots are most demanding. - Nutrient Dense Food High Brix Farming-Gardening
“In essence, I discovered that there was a direct correlation between the hydrogen content in the cell and plant health. At the ideal of 6.4, the hydrogen content of plant fluids is approximately
12%.”...“I don’t care what crop you check, 6.4 is the key factor. If it’s not there, you have an imbalance and potential problems. You can tell what the im balance is by backing up with brix levels.” - GSait Plant Health Energy Managment PDF
Ideal sap pH-level for optimal plant growth and production is pH 6.4
If sap pH exceeds 6.4, this probably means a shortage of the anions nitrogen, phosphate or sulfur. At pH 8 the odds of insect trouble is 100%.
Conversely, if sap pH is lower than 6.4, then there is a cation problem, with possible deficiencies of calcium, magnesium, potassium and/or sodium. Low sap pH suggests a far greater potential for foliar disease. At pH 4.5 the probability for fungal appearance is 100%. - Principals to Produce Nutrient Dense Crops PDF -Bruce Tainio
| Temperature, 68 °F (20 °C) | |||||||
| Specific Gravity | Brix | Specific Gravity | Brix | Specific Gravity | Brix | ||
| 0.990 | 0 | 1.038 | 9.5 | 1.085 | 20.43 | ||
| 0.991 | 0 | 1.039 | 9.74 | 1.086 | 20.65 | ||
| 0.992 | 0 | 1.040 | 9.98 | 1.087 | 20.88 | ||
| 0.993 | 0 | 1.041 | 10.22 | 1.088 | 21.1 | ||
| 0.994 | 0 | 1.042 | 10.46 | 1.089 | 21.32 | ||
| 0.995 | 0 | 1.043 | 10.7 | 1.090 | 21.54 | ||
| 0.996 | 0 | 1.044 | 10.94 | 1.091 | 21.77 | ||
| 0.997 | 0 | 1.045 | 11.18 | 1.092 | 21.99 | ||
| 0.998 | 0 | 1.046 | 11.42 | 1.093 | 22.21 | ||
| 0.999 | 0 | 1.047 | 11.66 | 1.094 | 22.43 | ||
| 1.000 | 0 | 1.048 | 11.9 | 1.095 | 22.65 | ||
| 1.001 | 0.26 | 1.049 | 12.14 | 1.096 | 22.87 | ||
| 1.002 | 0.51 | 1.050 | 12.37 | 1.097 | 23.09 | ||
| 1.003 | 0.77 | 1.051 | 12.61 | 1.098 | 23.31 | ||
| 1.004 | 1.03 | 1.052 | 12.85 |
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