Notes tagged with spectrometer

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New Cuvette Holder design done on SmartDraw CAD

by dhaffnersr 6 days ago | 3 | 215 | 0

I redesigned the cuvette holder finally, this is just the prototype but she works great. It loo...

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CFL scans using the DH 4.2 spectrometer

by dhaffnersr 7 days ago | 1 | 205 | 0

I did 8 scans today of a CFL (compact fluorescent light) using a 27 minute random time frame. Al...

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Chemical Analysis [Polycyclic aromatic hydrocarbons] in Crude oil

by dhaffnersr 8 days ago | 1 | 222 | 0

Abstract This is a continuation from my previous research on 05/18/2016. Chemical analysis on 2 ...

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Crude oil analysis (sweet crude) Laramine county carpenter Wyoming USA

by dhaffnersr 9 days ago | 1 | 297 | 0

****ABSTRACT Crude oil analysis (sweet crude) Laramine county carpenter Wyoming USA (Late Cretace...

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Spectrometer design 3d printer box

by sebastian04 9 days ago | 0 | 325 | 1

tapacamara.stl I was about to remove a webcam which was home but seeing the pout with which my ...

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DH 4.2 (build 4.0.1) spectrometer vs SpexFluoroMax spectrometer

by dhaffnersr 13 days ago | 1 | 386 | 0

****ABSTRACT Accuracy and calibration testing for the DH 4.2 (build 4.0.1) homemade spectrometer ...

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A more compact spectrometer

by cristoforetti 14 days ago | 12 | 462 | 1

What I want to do For the WebValley 2016 Summer School (https://webvalley.fbk.eu), together with...

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Introducing the DH 4.2 Spectrometer (prototype build 4.0.1)

by dhaffnersr 16 days ago | 0 | 410 | 0

What I want to do 1) To construct a reliable and accurate spectrometer 2) To make it cost effect...

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New upgrade today for my spectrometer/New CCD camera module

by dhaffnersr 18 days ago | 9 | 440 | 0

I replaced the old webcam that came with the plab spectrometer kit today with a newer and far sup...

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Further explaining quantum yield

by dhaffnersr 20 days ago | 2 | 348 | 1

I wanted to present this as a learning tool for others who may be interested at how these calcula...

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Quantum Yield calculations for Fluorescein in Potassium bromide

by dhaffnersr 20 days ago | 2 | 291 | 0

I finally figured out how to calculate the quantum yield for a sample, so using the raw data from...

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Question: Why average? And what happens to the second Green?

by viechdokter 22 days ago | 10 | 273 | 0

I have been reading a lot about spectroscopy and spectral analysis lately. I got a lot of feedbac...

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Using Potassium Bromide (KBr) in UV/VIS spectroscopy

by dhaffnersr 22 days ago | 1 | 352 | 0

Using UV/VIS spectroscopy, either an unknown substance can be identified or the concentration of ...

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Tweaks to foldable mini-spectrometer design

by warren 23 days ago | 1 | 345 | 0

What I want to do A few months ago, I taught a papercraft class at Parts & Crafts, and we we...

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Highlights: Working with Communities in the DIY Oil Testing Booklet

by stevie 23 days ago | 0 | 317 | 1

The second section of the new DIY Oil Testing Booklet, which we’re highlighting this week, is foc...

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DIY Oil Testing Toolkit: Graphic Template Release!

by mlamadrid 23 days ago | 0 | 365 | 2

Hello! I have uploaded a template version of the book design for the DIY Oil Testing Toolkit. It'...

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Some tools of the trade and a new Cree highpower Blue LED that I put together

by dhaffnersr 23 days ago | 0 | 239 | 0

I received yesterday my Cree high powered 470nm blue LED, and so I put it together and tested it ...

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Rhodamine b in ethanol study May/02/2016

by dhaffnersr 25 days ago | 0 | 335 | 0

What I want to do: Using the new spekwin32 v172.2P3 hardware control prototype software, I wante...

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Fluorescein study 6 sample concentrations plus an upgrade to the DVD grating

by dhaffnersr 26 days ago | 0 | 296 | 0

First, I had to make an upgrade to the DVD piece in my spectrometer this weekend, the way it was,...

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Uv laser pointer (405nm <5mW) 2 stroke motor oil related testing Apr/29/2016

by dhaffnersr 28 days ago | 4 | 318 | 0

This research is in direct relation to my previous testing of 2 stroke motor oil. I have also inc...

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Using Ethyl acetate as a primary solvent for non-polar compounds

by dhaffnersr 29 days ago | 1 | 348 | 1

The picture above is the exact samples I used for this test on using Ethyl acetate for a primary ...

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Converting CSV files on Windows 7 on up with commas instead of decimals

by dhaffnersr 30 days ago | 2 | 356 | 1

upon trying to use the new csv (beta) version here at Plab, I couldn't figure out why I couldn't ...

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Spitfire peak pixel test

by viechdokter about 1 month ago | 1 | 230 | 0

What I wanted to do this time is to take a series of spectra of the same CFL lamp in fast success...

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Announcing a Public Lab booklet: DIY Oil Testing

by warren about 1 month ago | 1 | 617 | 2

Hello all -- today we’re announcing a booklet @gretchen, @stevie, @liz and I put together in Dece...

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Spectrometer DVD-Alignment Auto-Correction

by stoft about 1 month ago | 0 | 410 | 0

Abstract This is a continuation of my investigation into extracting stable data from the PLab sp...

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Spectrometer Peak-Hold

by stoft about 1 month ago | 0 | 300 | 0

Abstract This is a brief follow-on to my previous note on spectrometer noise reduction via Time-...

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Data Validation of previous Eosin Y results for April/21/2016

by dhaffnersr about 1 month ago | 1 | 413 | 0

Using my Aries series green laser, I wanted to validate the Eosin Y study I did the other day wit...

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Prototype of easy-to-build rigid spectrometer housing

by warren about 1 month ago | 13 | 547 | 1

What I want to do Building on work by @viechdokter and @stoft, and related to their and @yagiz's...

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And if I flip it over? Effects of a reversed polfilter on spectra.

by viechdokter about 1 month ago | 0 | 297 | 0

So, now for something interesting... I repeated the polfilter turning angle test - but this time ...

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