pH changes the power
A deeper guide to ph changes the power, binding, topping, inert gas and closed transfer, ridge at crush, ridge sulfur disclosure, worked technical sheet, what is documented.
The argument
What this chapter will give you
This chapter supports the lesson’s central job: understand topping, oxygen exposure and sulfur dioxide while keeping additions, total sulfur and active fractions distinct.
This is a reading chapter, not a definition enlarged to fill a screen. Its sections build the idea from mechanism and method to the language you can use in front of an actual glass.
pH changes the power
At lower pH, a greater share of free sulfur dioxide exists in the molecular form. At higher pH, more free sulfur may be needed for a comparable antimicrobial target. One sulfur number without pH is incomplete.
Binding
Sulfur dioxide binds with compounds including acetaldehyde and sugars. Bound sulfur contributes to total measurement but does not behave like free protection. Additions, free sulfur, total sulfur, and molecular sulfur answer different questions.
Topping
Wine lost from a barrel through evaporation leaves headspace. Topping replaces volume and limits the oxygen reservoir. Barrel condition, bung position, cellar humidity, and topping frequency all influence exposure.
Inert gas and closed transfer
Nitrogen, carbon dioxide, or argon can protect tanks and lines. Closed transfers reduce air contact. These tools can preserve fruit, but poor use can leave oxygen pockets or amplify reductive conditions.
Ridge at crush
The sheet documents thirty-five parts per million sulfur dioxide at crush. That is an addition at an early vulnerable stage, not proof of the free sulfur remaining after binding and fermentation.
Ridge sulfur disclosure
The same wine lists seventy-four parts per million over the course of ageing. That documents sulfur use, not a measured total at bottling. It does not tell us the free or molecular fraction at any particular moment.
Worked technical sheet
Put the Ridge lines in order: whole-cluster press; sulfur at crush; native barrel fermentation; full malolactic conversion; sulfur through ageing; pad filtration at bottling. The meaning comes from the sequence.
What is documented
We can state two sulfur figures, fermentation route, conversion, vessel, filtration, and timing. Ridge also states its broader commitment to minimal processing and measured sulfur use.
Bring it back to the glass
Three checks before the conclusion
- Record the sensory observation before proposing a grape, place, climate, or production cause.
- Compare intensity, timing, location, and persistence instead of relying on a single descriptor.
- State a plausible alternative and lower confidence when one clue is doing all the work.
The language bench
Solid things you can actually say
Use these as sentence shapes, not answers to copy. Replace the details with what your glass can defend.
What is actually aromatic?
- “The aroma is moderately intense and led by a broad fruit family.”
- “A second savoury note becomes clearer as the sample warms.”
- “I am confident about the family, but not a precise descriptor.”
Which basic qualities are present?
- “The wine is dry, with noticeable sourness and little obvious bitterness.”
- “Fruit flavour fades before the structural sensations.”
- “Sweetness is present but balanced by acidity.”
What happens through time?
- “The palate feels medium-bodied and gently coating.”
- “A fine drying texture develops along the gums.”
- “Warmth appears late and persists in the throat.”
What does the pattern support?
- “Several observations support this interpretation, but the glass does not prove it.”
- “The strongest evidence is structural; the origin remains uncertain.”
- “The line worth keeping is: Protection depends on dose, timing, chemistry and exposure.”
Make the sentence earn its keep
“It is fruity and smooth.”
“It has moderate fresh-fruit aroma, medium acidity, and a soft, low-grip texture.”
The stronger sentence identifies sensory channels and observable relationships.
Try it now
A five-minute field exercise
- Write one smell, taste, and texture sentence.
- Add the likely explanation on a separate line.
- Give the explanation a confidence level and name one alternative.
The line worth keepingProtection depends on dose, timing, chemistry and exposure.