[Prep Lab Students] Autumn 2025- Week 7

[Weaver, Tyler]

The Weekly Mix
Volume: Autumn 2025 | Edition: Week 7
Schedule

Fortunately, Week 6 was much calmer than Week 5. Let’s hope Week 7 is similar. Here’s what we’ve got planned:

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Experimental Details

Review the window notes and any associated equipment guides for additional details.

Please see the Week 6 Edition<https://lists.osu.edu/pipermail/preplabstudents/2025-September/000302.html> for details on CYC and CLK.
STR

This is one of my favorites! Students should try to keep their samples under the snorkels as much as possible. This will help immensely with the odor in the room. The waste will be disposed of in the white can (Chemical Waste container) in Hood B.

LLT

Blue square carboys of 0.44 M NaOH will be swapped out during the lab readiness checks by those completing them. When swapping out the blue carboys, check the fill level of the spill tray. Let us know if it’s more than half full. Partially filled bottles of lemon and lime juice should be placed in the fridge. We will periodically combine these. When doing a gather, please check the fridge first for full bottles of lemon and lime juice. If you need more than what is available in the fridge, please grab new bottles from aisle 28. No partial bottles of lemon or lime juice should be left in aisle 28.

LCP

Students will be using ice toward the end of lab. We do not provide scoops for ice, instead students should use an empty beaker from their drawer. At least one glove should be removed when walking through the hallway. If students are in the hallway with two gloved hands, please gently ask them to remove one glove. Additional commentary is not necessary.

IHT

Cups and lids will be in the red dispensers by the balances. We’re going to use quite a few weigh boats, cup and lids- so be sure to keep a close eye on these. Additional cups and lids are available in the same cabinet as the 15-mL Falcon tubes- this is the cabinet under the balances closest to Hood A.

MGB

Model kits will be provided on the bench beside Hood A. Sarah and Emma have replacement parts in both windows if needed.

Other Information

Week of Fall Break

We will run our normal schedule on October 13th through October 15th. We still have lab scheduled for October 13th. October 16th and 17th are Fall Break; the prep lab will be closed.

Gather Sheets

Gather sheets should be left with a gather after the gather is completed. Once a cart check or cart change is completed, the gather sheet should be thrown away. At that point it been with the chemicals and I would prefer it does not come back into the office.

Returning Keys

We've had way too many instances of keys not being returned after use. You are responsible for any keys you take out of Keyth for the duration they are checked out. This includes if you hand them off to someone. Please return keys back to Keyth as soon as you are done with them.

Reagent Caps

Anytime you are doing a gather, cart check, cart change, lab readiness check, etc. please be sure you are briefly checking for broken or missing caps. We have replacement caps on the end of aisle 27/27.

Rando Wash Bottles

When collecting abandoned equipment from the sink areas and hoods, please be sure to also grab any wash bottles that have been abandoned. Some hoods recently had three or more in them.

Cart Reagents

Please be sure the reagent bottles on the carts are standing upright and labels are facing forward. As mentioned earlier, you should also be checking that all caps are intact and closed. If solids are supposed to be provided with a scoop, straw, or forceps, please be sure those are also present.

General Chemistry Prep Lab • Department of Chemistry and Biochemistry • THE Ohio State University
preplabstaff at lists.osu.edu<mailto:preplabstaff at lists.osu.edu>

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