Homemade Spectrometer Results

Yesterday we went to the TU Delft ChemLab, these results will be posted soon. But we also did some experiments with our own third prototype. We tested the fluids shown on the image below plus a control test:

IMAG1864IMAG1867
Left image: Tonic, sweet white wine, dry white wine, red wine, Sisi, dish soap, coke, cassis, sprite, beer, olive oil & sunflower oil.
Right image: Our test setup.

We used a normal light bulb to send light through a sample into our spectrometer. Then we used online software to generate a result. The software can be found here: spectralworkbench.org/capture.

Below our results are shown:

Nulmeting
This is our control measurement, no sample was put in between the spectrometer and the light bulb.

Tonic
Tonic

Zoete witte wijn
Sweet white wine

Volle witte wijn
Dry white wine

Rode Wijn
Red wine

Sisi
Sisi

Groene Actiff ultra afvalmiddel
Dish soap

Cola
Coke

Cassis
Cassis

Sprite
Sprite

Bier
Beer

2Olijf olie
Olive oil

1Zonnebloem olie
Sunflower oil           

Some results are very clear, like Cassis & Sisi. Some results are not so clear, like Coke & Red wine. But most results can be very useful in differentiating between different fluids. Sometimes the differences are very slim, but they are there and that means you can test, at home, whether you have olive oil or sunflower oil in that unlabeled jar. And we think that is very interesting and also a lot of fun!

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