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<span style="text-transform: none;"><b>The Weekly Mix</b></span></div>
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Volume: Spring 2026 | Edition: Week 4</div>
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<span style="font-family: Arial, sans-serif;">Schedule</span></h2>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">It’s week 4, which means it’s time to try something truly radical: a full week of lab. Monday sections will, at long last, be having
lab.</span></p>
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<span style="font-family: Arial, sans-serif;">Experimental Details</span></h2>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51);">Review the window notes and any associated equipment guides for additional details. Please refer to
<a href="https://lists.osu.edu/pipermail/preplabstudents/2026-January/000329.html" data-outlook-id="b4d8cfef-dab8-4b7c-96e5-d14581e52358" style="margin-top: 0px; margin-bottom: 0px;">
last week’s edition</a> for details on SOL.</span></p>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;"><b>DAG</b></span></div>
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<span style="background-color: rgb(255, 255, 255);">Materials will be provided on the bench beside Hood A. Be prepared to provide replacement plastic 50 mL graduated cylinders. The students tend to put these in their drawers instead of returning them. There
are now enough brass pieces of each type for each student to have one.</span></div>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>EMS</b></span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">These will be set up on the bench beside Hood A. Replacement parts are available in the window. The power supplies and discharge tubes
are new, but the spectrometers are the same.</span></p>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;"><b>FPD</b></span></div>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">Be prepared to direct students to the ice machine outside of the restrooms. Keep an eye on the ice machines, let us know if it’s getting
low. If the machine is getting low, we can top it off with ice from the prep lab. We do not provide an ice scoop to students; they should just use an empty beaker from their drawer. The FPD apparatus guide has details on replacement parts and repairs that
can be done within the lab support window.</span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">Everyone is required to read the current version of the FPD guide. We’ll have copies of the FPD guide in the windows and in the prep
lab office. Everyone must read it. After reading, you must initial on the roster next to Keyth indicating you have read through it and understood it. Let us know if there are any gray areas. </span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>QUL</b></span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">All rooms have a significant stash of 1.7 mL microcentrifuge tubes behind their marker boards. The students will be using the centrifuges
for this- if they report one is not working, check the following: it’s plugged in, turned on, and the lid is fully closed. If it still doesn’t work, trade it with one of the extras in the window. Place a broken item sticker on the faulty unit. </span></p>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">When doing cart checks for this experiment, swap the entire bin of reagents regardless of fill level. Do not check individual bottles-
it takes too long.</span></p>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;"><b>SAL</b></span></div>
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<span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">Additional colorless empty microcentrifuge tubes are stored behind the marker boards. Only emptied and rinsed centrifuge tubes should
be placed in the blue bucket. Blue buckets should be swapped out during waste runs if they are more than half full. If you see any leftover tubes of solids on the reagent carts when doing your checks, please give them to the window- window people, please put
them in the “partial unknown sets” bin.</span></p>
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<span style="font-family: Arial, sans-serif;">Other Information</span></h2>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"><b>Evening Dismissal</b></span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">Around closing time, Emma and Sarah will dismiss students early if everything that needs to be done is completed prior to the end of the scheduled shifts.
This should be reflected properly in your timesheets.</span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"><b>Window Stuff</b></span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">If someone gives you something that is broken, by default, please offer a replacement of that item. </span></p>
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We’re still struggling a bit with the red lids on the blue buckets. When blue buckets are not in use the red lid should be placed on top of the bucket. When they are going to be used, the red lid should be placed under the blue bucket or at least flipped over
so you cannot see the “this bucket is not in use” sticker. Leaving this sticker in view of an “in-use” bucket can be confusing.</div>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"><b>Vacuuming</b></span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">When using the backpack vacuum in the labs, please be sure to move the reagent carts and
sweep the area where they were sitting. Dust and hair tend to </span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">accumulate</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"> there.
Please also open the doors to the AV cabinet and sweep the floor in front of it and any obvious dust that is not in a sensitive place.</span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"><b>Absorbent Pads</b></span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">We have several types of absorbent pads available in the lab, so it</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">’</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">s
understandable if you find it challenging to decide what should be used. A summary is listed below, but if you</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">’</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">re
ever unsure please just ask.</span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(200, 38, 19);">Yellow pads</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">-
are for chemical spills</span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(200, 38, 19);">Gray</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(200, 38, 19);"> pads</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">-
are for spills that </span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">can be disposed of in the trash. Think mud, coffee, melted snow, etc.</span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(200, 38, 19);">Large blue pads</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">-
these have blue backs and are for the sliver carts.</span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(200, 38, 19);">Medium blue pads</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">-
these are for the blue carts. These pads are currently blue with white backs but will change to white with white backs.</span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(200, 38, 19);">Small blue pads</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">-
these are blue with white backs and are for the shelving in the prep lab.</span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"><b>Cart Changes</b></span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">Reference the gather sheets when completing cart changes and chemical removals.
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">We’ve</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"> seen mistakes that could easily be avoided with
both tasks had the gather sheets been referenced. Additionally, be sure you are </span>
<span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">switching</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"> any dirty liners on carts when doing cart changes.</span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"><b>Friday Waste Runs</b></span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">Dr. Moore, our chemical safety coordinator has specifically
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">instructed</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"> us to not leave any waste upstairs over
the weekend. To comply with this, please glance at the waste beakers when doing </span>
<span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">Friday</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);"> night waste runs on all
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">rooms, we’ve seen waste left behind.</span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">On the same topic, please be sure to replace any used 6 M NaOH. I don</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51);">’</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51);">t
have a waste run scheduled for Monday mornings because everything should have been taken care of Friday night. If the 6 M NaOH is not replenished on Friday night, the Monday morning sections will be at a disadvantage.</span></p>
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<span style="color: rgb(102, 102, 102);">General Chemistry Prep Lab • Department of Chemistry and Biochemistry • THE Ohio State University<br>
</span><span style="color: rgb(0, 120, 212);"><a href="mailto:preplabstaff@lists.osu.edu" id="OWA7fc7fa66-2949-53c8-c84a-7dc115d3ebed" class="ms-outlook-linkify OWAAutoLink" title="mailto:preplabstaff@lists.osu.edu" data-outlook-id="221d003b-decd-4644-9507-88c749f7696a" style="color: rgb(0, 120, 212);">preplabstaff@lists.osu.edu</a></span></div>
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<span style="font-family: "Buckeye Sans 2"; color: rgb(201, 27, 0); text-transform: none;"><i>Be sure you are reading the entirety of this email message. You are accountable for the entirety of all messages sent to you by the Prep Lab Staff. Emails sent to
</i></span><span style="font-family: Aptos, sans-serif; color: rgb(0, 120, 212); text-transform: none;"><i><u><a href="mailto:preplabstudents@lists.osu.edu" title="mailto:preplabstudents@lists.osu.edu" data-outlook-id="3f9e6c1b-8d88-4056-b5a1-7793f41c60d2" style="color: rgb(0, 120, 212);">preplabstudents@lists.osu.edu</a></u></i></span><span style="font-family: "Buckeye Sans 2"; color: rgb(201, 27, 0); text-transform: none;"><i> are
archived for your convenience at </i></span><span style="font-family: Aptos, sans-serif; color: rgb(0, 120, 212); text-transform: none;"><i><u><a href="https://lists.osu.edu/pipermail/preplabstudents/" title="https://lists.osu.edu/pipermail/preplabstudents/" data-outlook-id="1766334a-fda4-4ab3-84be-b433a7aa98b3" style="color: rgb(0, 120, 212);">https://lists.osu.edu/pipermail/preplabstudents/</a></u></i></span></div>
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