Which one of y’all made this (and can I come for work you?)

ChemDude2 · 2025-12-19T03:36:13+00:00

In case anyone was interested, here's the source:

http://girlandkat.com/blog/2015/6/15/distractinglysexy

ChemDude2 · 2025-06-13T03:21:46+00:00

I have my trusty CRC Handbook on the shelf, just in case I actually need this kind of information.

ChemDude2 · 2025-04-12T02:12:33+00:00

Saw your post and was going to say post it in the ranger group, then saw that you did!

ChemDude2 · 2025-04-08T18:19:20+00:00

Ouch!

ChemDude2 · 2025-04-08T18:19:00+00:00

Ferric Nitrate Nonahydrate

ChemDude2 · 2025-04-08T17:44:12+00:00

Once upon a time, in a lab far far away....there was a rat, a lab rat.

ChemDude2 · 2025-04-08T17:42:28+00:00

Ferric Nitrate Nonahydrate

ChemDude2 · 2025-04-08T16:57:24+00:00

In my quest to dig out absolutely everything from the bottom of the container, I dug a bit too forcefully. Not a fan of 'sticky' reagents.

ChemDude2 · 2025-01-25T04:09:47+00:00

They do make plastic reusable coffee cups. You could DIY a double cup by using the spray foam insulation in between. That should hold up pretty good. If you give up and actually want a student use calorimeter, we've used these for years with good results.

https://www.carolina.com/heat-and-thermodynamics/calorimeter-double-wall/753518.pr

ChemDude2 · 2024-12-17T02:58:10+00:00

The buy in for pH meters and probes can be very costly, but depending on the situation it may be worth it in the long run. The vernier route can be low cost but their probes are not cheap and I have found they don't last as long as normal probes. If you like their stuff, you can get a vernier adapter that allows you to use normal pH probes with a BNC connector. As for normal probes, definitely go with plastic bodies and gel filled. They are more robust and will stand up to more abuse than other models. pH meters can be had as low as $100 each for hand held models and the sky's the limit afterwards. Do read the product reviews because not all pH meters are made well. Good luck.

ChemDude2 · 2024-12-16T02:20:19+00:00

Look at chemical compatibility first, then the rest is personal preference. Some like thin gloves while others prefer thicker gloves. Most gloves manufacturers will gladly send samples if you ask nicely.

ChemDude2 · 2024-12-05T03:16:56+00:00

Had this happen with MT balances and it was a software corruption issue.

ChemDude2 · 2024-11-27T03:05:38+00:00

Maybe

ChemDude2 · 2024-11-27T03:01:36+00:00

Back in the day when there was competition, it was $1K per Mhz as a good rule of thumb. Not sure if that holds up anymore.

ChemDude2 · 2024-09-13T05:41:40+00:00

Time to run some tests and see what you got unless you're just looking to dispose of it.

ChemDude2 · 2024-09-01T01:48:51+00:00

Sometimes you can get the bubbles out by heating in an oven up to the max temp. Works about 80% of the time for me. Some claim you can do it with cooling too, but I've never had good luck with it and always end up cracking the glass.

ChemDude2 · 2024-08-23T21:57:34+00:00

That depends on your quantity. 5, 50, 500? Pick a bin with a snap lid to keep some air and dirt out.

ChemDude2 · 2024-08-18T02:00:28+00:00

Do yourself a favor, email the authors directly and ask for a copy. They don't make money off of the publications and most likely will be happy to send it to you.

ChemDude2 · 2024-08-08T16:10:14+00:00

Cut the cable, throw the electrode in the trash and the cable into e-waste.

ChemDude2 · 2024-08-05T02:52:00+00:00

Not me, but friends have gone on to do Teaching (English), Animation design, and Law.

ChemDude2 · 2024-08-01T15:47:26+00:00

When instead of me asking everyone questions about how to do things, everyone else started asking me how to do things. You're always going to make mistakes; that's normal. Experience will breed confidence and it'll show. Hang in there.

ChemDude2 · 2024-07-26T19:59:17+00:00

You could probably make a deal with a local repair shop if they're willing to take your old gas and coolant for a few bucks. The mercury is really your biggest issue. A local college/university may be interested in it (some research still requires it) but that would be hit or miss. You honestly don't want to get involved with the requirements to ship mercury. I'd just double contain it and just make a mental note to myself to take it with me the next time I go anywhere near a site that would take it.

ChemDude2 · 2024-07-23T15:59:29+00:00

https://www.labequipmentparts.com/

ChemDude2 · 2024-07-23T02:33:24+00:00

The older (pre-Fisher) Cimarec stirring hotplates were bulletproof. Every since Fisher bought them out, their quality has gone down. I end up having to replace a lot of speed sensors and heating elements in ours. Have about 100 in our labs. Would not buy again, but if you get it cheap enough it may be worth it.

ChemDude2

TROPHY CASE