Phosphorus Analyses (July 30, 2012)

Today, we analyzed our unfiltered water samples for total phosphorus! This process took longer to prepare, because the samples have to be autoclaved first. We did that on the 28th and refrigerated the samples until today, when we continued by adding reagents and letting them sit for a bit. Then, we checked their absorbance with the spectrometer at 885.0 nm.

Here are some pictures of me working in the lab before using the spectrometer! So much fun. I love working in the lab. :)

Adding the reagents after autoclaving...

... and mixing the samples with a vortex mixer!