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Figure 66 Specific Gravity Temperature Correction
Correction
Example No. 1
Temperature below 26.7°C (80°F)
Hydrometer Reading 1.250
Acid Temperature - 6.7°C (20°F)
Subtract .024 Specific Gravity
Corrected Specific Gravity is 1.226
1.250 - .024 = 1.226
Example No. 2
Temperature above 26.7°C (80°F)
Hydrometer Reading 1.235
Acid Temperature 37.8°C (100°F)
Add .008 Specific Gravity
Corrected Specific Gravity is 1.243
1.235 + .008 = 1.243
The temperature correction amounts to about .004 (4 points) of
specific gravity for each 5.5°C (10°F) change in temperature.
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