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MoreWine! Acid Test Kit
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Used to determine the Total Acidity in a wine, the MoreWine! Acid Test Kit is an invaluable tool for any home winemaker. Total Acidity measurements are important to winemaking because the correct amount of acidity is key to maintaining a wine which is balanced in flavor and stable for ageing.

Kit Contents:

  • Large Reaction Vial
  • 10mL Syringe
  • 4oz of Sodium Hydroxide Reagent
  • Phenolphthalein Indicator in 1oz Dropper Jar

Reagent Stability Information:

  • Sodium Hydroxide Solution - 0.1 Normal (2 year shelf life cool & closed, 3 month shelf life cool and opened)
  • Phenolphthalein Indicator - 1.0% (5 year + Shelf life)

MoreWine! Guide to Acid Testing

Item # W501
Shipping Eligible for Free Shipping Program
Availability California - Out Of Stock
Pennsylvania - In Stock
Weight 0.50LBS
Community Q&A

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Why did you choose this?
MoreFlavor Store
testing interest
Mookie on Mar 5, 2018
testing interest
Mookie on Mar 5, 2018
works great
Paul H on Jan 29, 2018
works great
Paul H on Jan 29, 2018

3.7 / 5.0
3 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Stars
Poor Instructions
While it's easy to measure the reactants and add the drops, there is little to go on to know the final Ph. You need to include an accurate rage of colors to which we can compare. The few pictures in the box and terribly inadequate.
March 2, 2018
3 months ago
Good Instructions
Found the instructions easy to follow. When making darker wines it was hard to read the color changes but works great on lighter wines and meads.
May 28, 2015
Easy to use and accurate enough for the home winemaker
A couple of hints:
The NaOH must be used rather quickly, as the concentration will change as water is evaporated or absorbed from the air. This can affect the reading by +/- 0.5 g/L in extreme cases. Just make sure when using it that the bottle is opened for as short a time as possible, and is closed tightly after use and all should be fine.
One more hint is to add a drop of wine and a drop of NaOH to the dilution water at the same time as you add the phenolphthalein indicator. Make sure that the starting color is pink. Then add your wine sample and titrate just like the instructions say. The drop of wine buffers the water and the NaOH adjusts the pH to the indicator endpoint. This ensures that you are titrating back to the endpoint correctly, and will give better accuracy.
December 5, 2012