| Author | Comment | Last activity | Moderation | ||
|---|---|---|---|---|---|
| msysinfo | "I need to measure oil concentration in a water mixture. Can a SPECTROMETER be used to measure the oil concentration? If it a solute that dissolves ..." | Read more » | about 9 years ago | |||
| DavidMack | "Thanks @gretchengehrke for the update. In Balmat, J. L. "Accuracy of Formaldehyde Analysis Using the Draeger Tube," the ranges were much higher th..." | Read more » | about 9 years ago | |||
| gretchengehrke | "Update: Received word back from the Kitagawa company. Unfortunately, they were of no help, simply saying that "...tube 710 is designed for monito..." | Read more » | about 9 years ago | |||
| gretchengehrke | "Just so this is recorded on this thread, here is my plan for moving forward: (1) Get information from the Kitagawa research team about co-contamina..." | Read more » | about 9 years ago | |||
| nshapiro | " @DavidMack wow, and that is even without interference from acetaldehyde & acetone etc? The article we developed our method from, http://www.n..." | Read more » | about 9 years ago | |||
| gretchengehrke | "Oooh -- nice find, @DavidMack! Thanks! " | Read more » | about 9 years ago | |||
| DavidMack | "Excellent precision in the values for both the public lab and DOH method--so there was clearly very diligent field work! I did a quick search for ..." | Read more » | about 9 years ago | |||
| gretchengehrke | "Thanks, @warren, that would be great! I'll tag it for the blog too. " | Read more » | about 9 years ago | |||
| warren | "Hi, Gretchen - love the in-depth post. Was this potentially blog material too? Also, I'm happy to try to help with the images, it looks like there ..." | Read more » | about 9 years ago | |||
| gretchengehrke | "Here is a picture of the DNPH cartridge used in the DOH analysis, and one of Gretchen learning to use the DOH instrument. " | Read more » | about 9 years ago | |||
| gretchengehrke | "Here are the graphs (not sure why they didn't show up in the original post): " | Read more » | about 9 years ago | |||
| straylight | "Good points and I understand how you feel, coming at his from a chemistry teachers viewpoint myself. I guess it depends on what experiments and dem..." | Read more » | almost 10 years ago | |||
| srpratt | "I'm new to the cellphone-becomes-a-photospec phenomenon, as I was told about this by a colleague. As an AP Chem teacher, I'm looking for hacks to ..." | Read more » | almost 10 years ago | |||
| ichinarayan | "ok thanks so much " | Read more » | about 10 years ago | |||
| straylight | "In spectral workbench, when you are looking at a spectra, there is an option to export and save the data in a variety of formats, including xml and..." | Read more » | about 10 years ago | |||
| ichinarayan | "wow beyond belief. i thought it was complicated listing program. and how do you exported the spectra image into csv form? thanks a lot " | Read more » | about 10 years ago | |||
| straylight | "Thanks for the question ichinarayan, I exported the spectra in csv form into microsoft excel. From there I selected the wavelengths I wanted to st..." | Read more » | about 10 years ago | |||
| ichinarayan | "what software do you use for your analisis program used to generated graph? " | Read more » | about 10 years ago | |||
| warren | "This is fantastic to see carried out so methodically. " | Read more » | over 11 years ago |