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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 9</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);">Spring break is next week! We do not anticipate the prep lab being open for student employees over spring break. Please take some time
to rest and recharge.</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
<a href="https://lists.osu.edu/pipermail/preplabstudents/2026-March/000341.html" data-outlook-id="82b61c1e-2735-42a1-b909-7df80e3873a2" style="margin-top: 0px; margin-bottom: 0px;">
the Week 8 edition</a> for details on STO and SAL.</span></p>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;"><b>CAR</b></span></div>
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<span style="background-color: rgb(255, 255, 255);">TAs will be picking up glucose test strips from the windows. These are light and moisture sensitive and are kept in the desiccators on the bench within the lab support window. To open the desiccator, unlatch
the three latches and swing the door open. Do the reverse to close the desiccator. Let us know if you have any trouble.</span></div>
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<span style="background-color: rgb(255, 255, 255);">The glucose test strips are expensive, so we WILL accept unused strips back. Please place these back into the desiccator in the pink “EXTRAS” bag. These should only be handed out if extras are needed. Never
give a TA a partial set. They should be picking up a full class set at the beginning of the lab session.</span></div>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;"><b>LLT</b></span></div>
<p style="text-align: left; text-indent: 0px; line-height: 1.3;"><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">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 and mark their caps with a line. 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. Unopened bottles of lemon and lime juice (should have unmarked caps) from cart checks should be placed back on the shelf in aisle 28.</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>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="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>SST</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); line-height: 1.3;">If a lab indicates they don’t have enough meters and probes, be sure they are planning to work in pairs. pH meters,
probes, and cables to connect the two, are on the bench closest to Hood A.</span></p>
<div style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51);">
<span style="background-color: rgb(255, 255, 255); line-height: 1.3;">There could be a few rooms with old (black cable) probes, most rooms will have new (white wire) probes. The probes with the black cables will need to be attached to the top of the meters
whereas the new white wire probes will need to be attached to the probe and meter via the white wire.</span></div>
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</span></div>
<div style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51);">
<span style="background-color: rgb(255, 255, 255); line-height: 1.3;">Connections are made on the top of the meter by pushing and turning (BNC type). Both pH probe types will have either a black o-ring or blue rubber piece at the top of the probe shaft to cushion
it from the glass storage tube and help seal in the storage solution. These should stay at the top of the probes while the students are taking readings.</span></div>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;">If a student claims their pH meter is “broken”, they should have their TA try to calibrate it before bringing it to the window for an exchange. Emma has prepared a guide on how to handle
pH meter issues; </span><span style="color: rgb(200, 38, 19); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>everyone is required to review it and initial the roster on the wall by Keyth</b></span><span style="background-color: rgb(255, 255, 255); line-height: 1.3;">.
It will be available in the window and the prep lab office.</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>HCAL</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); line-height: 1.3;">Students and TAs have been instructed to use a program called Graphical Analysis. It can be downloaded from go.osu.edu/graphicalanalysis. </span></p>
<div style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(51, 51, 51);">
<span style="background-color: rgb(255, 255, 255); line-height: 1.3;">GoTemp! Probes are on the bench by Hood A. USB adapters are also available, if needed. Sarah, Emma, or I will take care of the unknown environment which will be setup in Hood A. All metals
and the battery prototypes will be on the reagent cart.</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>CLK</b></span></p>
<p style="text-align: left; text-indent: 0px; line-height: 1.3; text-transform: none; background-color: rgb(255, 255, 255);">
<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">Extra thermometers and replacement batteries will be in the window. This one usually uses a bunch of spill kits. Keep
a close eye on your spill kits and request replacements as needed. The window playbook has been updated with guidance on when to replace lab coats that have reagents spilled on them- please review it.</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); background-color: rgb(255, 255, 255);"><b>Gathers</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); background-color: rgb(255, 255, 255);">We saw several errors with gathers this week. The
incorrect concentration or incorrect volume was pulled. Please be sure you are paying attention to these details when gathering materials. This can have a big impact on the students</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">’</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> experiments.</span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"><b>Eyewash Testing</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); background-color: rgb(255, 255, 255);">We</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">’</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">re
going to transition </span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">eyewash</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> testing
to be a One-An-Hour option for Mondays, Wednesdays, and Thursdays. Two rooms will count for one hour. We have a green laminated sheet on the Daily Sheet board. Please cross out completed rooms so we know what still needs to be completed. If you have any questions,
please speak with Sarah, Emma, or Tyler.</span></p>
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<span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"><b>Discrimination and Harassment Training</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); background-color: rgb(255, 255, 255);">The
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">deadline to complete this is fast approaching!
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">You have until the beginning of spring break to
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 16px; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); text-transform: none;">complete</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> this
training module. As of right now, only about half of our students have done so</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">…</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">.</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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