All Questions
Tagged with optical-properties spectrophotometry
4
questions
1
vote
1
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168
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How to identify an error in cut off filter (optical) usage when running spectrophotometry?
In spectrophotometry, often a cut off optical filter is used. With reference to a long-pass filter, which rejects any wavelengths outside a predetermined interval: low transmission in short ...
- 1,944
7
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Home science optical absorption test for approximate caffeine quantity in coffee?
I started with How can you measure the caffeine content of a liquid at home? in the cooking stackexchange, but the test strips were only qualitative (yes/no) and don't seem to exist anymore, and the ...
- 5,898
2
votes
1
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Thymol Blue - molar absorptivity
I did a lab about spectrophotometry and right now I need the molar absorptivity(ε) of thymol blue in acidic solution and also in basic solution. I have tried looking online but I haven't found the ...
- 79
3
votes
1
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OD660 readings of yeast
I am working on a yeast fermentation project, and I am getting final OD660 reading of 1.85 for different media: yeast extracts+cane molasses, nitrogen source+cane molasses, and glucose+cane molasses ...
