Che270 – Expt. 9 (HPLC) Sign-Up

Here is a signup sheet for experiment 9 in lab (HPLC). We will have two groups (two people per group) do the experiment during each lab session. You are then free to redo any of your other experiments during the other sessions.

Che380 – Lab project ideas

Here are some ideas to consider – I’ll update this list as I think of things.

The biology department has a need to more closely monitor atmospheric conditions in the growth chambers they have in the greenhouse. Development of a system to log and report temperature, light, and humidity, for example, would be a good [more…]

Che380 – Course Update

In class on Monday (09/09) we will talk quite a bit about the laboratory part of the course. I will hand out a paper copy of the Introduction to the lab manual, but you will find a link on the course page now as well.

We will also discuss the options you have for ‘participating’ [more…]

Che270 – Revised HPLC Conditions

The conditions we used for the HPLC experiment were slightly different from those indicated in the laboratory manual. Here is the revised experiment with the correct conditions indicated.

Che270 – Sign up for HPLC Lab and Redos

Here is a sign-up sheet for the HPLC lab (two groups per week) and your experiment redos.

Che270 – Buffer Lab Signup

Here is a signup sheet for the buffer lab this week.

Che270 – Supplemental text on glassware calibration

The physical concepts and calculations involved in proper calibration of laboratory glassware are involved and can be confusing. For this reason Laura Secor (GAC ’11) and I drafted this supplement to the Harvey textbook on this topic. Please read through it (for Monday), and prepare answers to the questions for Wednesday.

Che380 – Measurement of photometric accuracy using dichromate

Here is a document from the National Bureau of Standards that has information about the use of dichromate to assess photometric accuracy of a UV/Vis instrument.

Che107 – Spreadsheet for class penny data

Use this spreadsheet to enter your penny data, and use the group data as part of your report for the penny lab.

Che107 – Useful resources for Experiment #1 – Introduction to Atomic and Molecular Masses

The National Institutes of Standards and Technology (NIST) is a U.S. Government organization that maintains all kinds of data related to the physical sciences. Of particular interest to today’s experiment is their database of ‘standard atomic weights‘. Also useful for understanding the concepts of mass spectrometry are the tutorials and animations at the Chromacademy website. [more…]