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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 11</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);">Time to get back at it! Week 11 starts tomorrow!</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-March/000342.html" data-outlook-id="2773c2a9-6cca-4906-8bbb-bf4e0e9c5ad4" style="margin-top: 0px; margin-bottom: 0px;">
the Week 9 edition</a> for details on CAR and SST.</span></p>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;"><b>SGR</b></span></div>
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<span style="background-color: rgb(255, 255, 255); line-height: 1.3;">The TAs will pick up candies from the lab support window, these will be on the unknown shelf. Students will need to use the carboy of distilled water in the lab for this one. If the students
need to re-smash their candies, they can do so by gently tapping the candy with an iron ring while the candy is resting on the blue base of the ring stand. Be prepared to pass out replacement 50-mL volumetric flasks.</span></div>
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<div style="direction: ltr; font-family: Arial, sans-serif; font-size: 15px;"><span style="color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>IHT</b></span><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); line-height: 1.3;"><br>
</span><span style="color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;">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.</span></div>
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<div style="direction: ltr; font-family: Arial, sans-serif; font-size: 15px;"><span style="color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>QUL</b></span><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); line-height: 1.3;"><br>
</span><span style="color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;">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></div>
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<span style="color: rgb(200, 38, 19); background-color: rgb(255, 255, 255); line-height: 1.3;">When doing cart checks for this experiment, swap the entire bin of reagents regardless of fill level.</span><span style="background-color: rgb(255, 255, 255); line-height: 1.3;"> Do
not check individual bottles- it takes too long.</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>WST</b></span><span style="font-family: Arial, sans-serif; font-size: 15px; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); line-height: 1.3;"><br>
</span><span style="font-family: Aptos; font-size: 16px; 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>
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<span style="font-family: Aptos; font-size: 16px; color: rgb(51, 51, 51); 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></p>
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<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; text-transform: none;">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, everyone is required to review it. It will be available in the window and the prep lab office.</span></div>
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<div style="direction: ltr; font-family: Arial, sans-serif; font-size: 15px;"><span style="color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"><b>BLP</b></span><span style="color: rgb(0, 0, 0); background-color: rgb(255, 255, 255); line-height: 1.3;"><br>
</span><span style="color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;">There are two unknowns per TA: packaged solids in a black bag and packaged solids in a clear bag.
</span><span style="color: rgb(200, 38, 19); background-color: rgb(255, 255, 255); line-height: 1.3;">You will NOT be passing out printed copies of the BLP lab manual pages.</span><span style="color: rgb(51, 51, 51); background-color: rgb(255, 255, 255); line-height: 1.3;"> If
someone needs notebook paper, they should be given the graph paper we have in the black paper organizer.</span></div>
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<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 will be glassware setup on the bench beside Hood A. Do not remove this glassware. These items will have rubber septa on them- do not remove these.</span></div>
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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>340 Marker Boards</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); text-transform: none;">The
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">supplies behind the marker boards in 340 have been reorganized. Some have been moved to the drawers under the
balances.</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>Volunteer for Science Olympiad</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);">Science Olympiad is on April 18th. Chemistry and
Biochemistry will be hosting 4 events this year! Details on how to sign up to volunteer, for our events or others, are
</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);">available</span><span style="font-family: Arial, Arial, Helvetica, sans-serif; font-size: 11pt; color: rgb(51, 51, 51); background-color: rgb(255, 255, 255);"> in
<a href="https://lists.osu.edu/pipermail/preplabstudents/2026-March/000344.html" data-outlook-id="c64f1aad-68f1-47c1-965e-5782e98d0698" style="margin-top: 0px; margin-bottom: 0px;">
the Science Olympiad email from last week</a>.</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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<div style="font-size: 9pt; color: rgb(0, 0, 0);"><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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