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BASIC TEST FOR TITRATABLE ACIDITY (TA) TEST KIT No. 1

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RRP:
$98.45
Your Price:
$84.00 (You save $14.45)
SKU:
TK – TKNO1HW


Product Description

 Items Required

  PRICE
50ml Syringes x 2 $17.90
Beaker, Squat, Grad. Pyrex - 250ml x 2 $9.90
Phenolphthalein Indicator, 1% - 50ml $9.95
Sodium Hydroxide 0.10M – 500ml $13.95
Charcoal, activated – 40g $7.95
Filter Paper, Economy, No.1 – 150mm 50 circles $11.95
Filter Funnel, Plastic – 100mm $7.95
Stirring Rod, Glass: 30cm x 7mm $11.95
Erlenmeyer Flask, Grad.Pyrex – 250ml $6.95
LIST PRICE (EX GST) $98.45
SPECIAL KIT PRICE(EX GST) $84.00

 

Method - Red Wine

Step

  1. Pour 50ml of red wine into a 250ml glass beaker.
    Add 1 teaspoon of activated carbon.
    Mix thoroughly.
    Leave to stand for 5-10 minutes.
  2. Fold a No.1 filter paper (150mm) into quarters and place in a 100mm filter funnel located in a 250ml erlenmeyer flask. Pour the carbon/red wine mixture into the filter funnel containing the filter paper.
  3. The filtered wine should be clear. If a red or pink colour still occurs then add the filtered wine back into the filter funnel until the filtered wine is clear.
  4. Use a 50ml syringe to add 10ml of the clear filtered wine to a 250ml glass beaker. Add also 30ml distilled water (or clean, clear water)
  5. Add 3 drops of Phenolphthalein Indicator to the 250ml beaker.
  6. Now pour approx. 100ml of 0.10M Sodium Hydroxide into another 250ml beaker. Use another 50ml syringe to draw-up 50ml of the 0.10M Sodium Hydroxide solution to the 50ml mark on the syringe.
    Note the initial volume of 0.10MSodium Hydroxide(0.10M NaOH) in the 50ml syringe.
  7. Place a glass stirring rod (30cm x 7mm) in the 250ml beaker and gently stir as the 0.10M Sodium Hydroxide solution is slowly added from the syringe to the 10ml of filtered wine in the beaker.
  8. When the colour of the solution in the beaker changes from a clear colour to a faint, persistent, purple colour then stop adding the 0.10M Sodium Hydroxide from the 50ml syringe.
    Note the final volume of 0.10M Sodium Hydroxide (0.10M NaOH) remaining in the 50ml syringe
    Subtract Final volume 0.10M NaOH from the initial volume of 0.10M NaOH in the syringe.
  9. The Titratable Acidity is calculated as follows:
    Titratable Acidity (TA) = [Initial volume – Final volume of 0.10M NaOH ] x 0.75 = grams /litre of tartaric acid present in the wine
    Example: The Final volume of 0.10M NaOH in the 50ml syringe = 42ml
    The Initial volume of 0.10M NaOH in the 50ml syringe = 50ml
    Titratable Acidity(TA) = 50ml – 42ml = 8ml x 0.75 = 6g/Litre of Tartaric acid


Method -  White Wine

Proceed from Step No. 4


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