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119100
  • 119100

Complete kit for free and total SO2 determination (Ripper method), with an automatic self-zeroing burette engraved and graduated

Manual titration of sulphurous anhydride

This kit includes a 25ml automatic self-zeroing burette engraved and graduated in mg/l of SO2 on a stand, an amber glass flask, with rubber bulb and siphon, pipettes, an Erlenmeyer flask and the reagents and titrated solutions.

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  • 119100- Complete kit for SO2 determination with burette graduated in mg/l SO2
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Références concernées

  • 119100-Complete kit for SO2 determination with burette graduated in mg/l SO2

PRINCIPLE

The free sulphurous anhydride is titrated directly in wine with a titrated iodine solution in the presence of a starch indicator. Subsequently, and on a second sample, the SO2 is released from the combinations it forms thanks to an alkaline solution. Then, the same titration as above is done again and total SO2 is obtained. The difference between the 2 results gives the combined SO2. 
 

EQUIPMENT AND REAGENTS

  • Stand, rod, and clamp for burette
  • 1 automatic self-zeroing burette with stopcock engraved and graduated (mg/l of SO2) (Ref. 600114)
  • 1 automatic bulb for burette (Ref. 606000)
  • 1 siphon for ground-joint flask (Ref. 600194)
  • Green clip for ground-joint assembly (Ref. 600195)
  • 1 VERSILIC hose (diameter 5/7) (Ref. 617602)
  • 1 Amber glass ground-joint flask (500ml) (Ref. 600193)
  • 1 stopper N°10 (Ref. 650110P)
  • 1 graduated ground-joint Erlenmeyer flask (250 ml) (Ref. 615250E)
  • 1 2-mark pipette (50ml) (Ref. 603010)
  • 1 2-mark pipette (25ml) (Ref. 603025)
  • 1 2-mark pipette (10ml) (Ref. 603050)
  • 1 dropping pipette with rubber bulb (Ref. 630000)
  • Iodine 500ml N/50 (Ref. 936500)
  • Sodium hydroxide 500ml  1,125N (Ref. 934500)
  • Sulphuric acid 500ml 1/10 (Ref. 932500)
  • Indicator 125ml (Ref. 937125)
 

WARNING

The sulphurous anhydride is a dissolved gas, which constantly escapes from liquid. To minimize this loss, it is important to: 
- Carefully take the sample, cork it immediately, and keep it at a cool place after analysis. 
- Prepare the material and the products before uncorking the sample.
- Quickly measure the sample and proceed immediately to titration. 
 

Produits associés

Sulphuric acid in 1/10 - 500 ml

932500Sulphuric acid in 1/10 - 500 ml

Soda 1,125N - 500 ml

934500Soda 1,125N - 500 ml

Iodine N/50 - 500 ml

936500Iodine N/50 - 500 ml

Starch - 125 ml

937125Starch - 125 ml

119100