Best lab volumetric flasks for labs according to redditors

We found 8 Reddit comments discussing the best lab volumetric flasks for labs. We ranked the 5 resulting products by number of redditors who mentioned them. Here are the top 20.

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Top Reddit comments about Lab Volumetric Flasks:

u/3repeats · 39 pointsr/Homebrewing

That isn't a volumetric device, those marks are painted by a machine, not by a chemist that verifies every glassware.

You need these, which are hand calibrated, if accuracy is important. (500mL volumetric for example)

http://www.amazon.com/213W7-Karter-Scientific-Volumetric-Stopper/dp/B006UKI5G0/ref=sr_1_9?ie=UTF8&qid=1420906445&sr=8-9&keywords=volumetric

u/solovus · 4 pointsr/homechemistry

>[E]very chem lab should have a good number of 150-250 mL glass beakers on hand.

  1. After looking up the differences (incl. price) between regular glass and borosilicate glass, when would borosilicate be mandatory?

    >Some large size glass test tubes will come in handy, and those are relatively cheap.

  2. What would be considered "large size?"

    >Depending on what type of reactions you want to do, you may find it good to have petri dishes handy, either glass or plastic (they'd be good for crystallization experiments, certainly).

  3. How many, and of what size, would be good for starting?

    >You should definitely have a few pipettes, either the cheap plastic 3 mL kind, or if you can afford it, nicer glass droppers (Pasteur pipettes are fun to use, albeit fragile and hard to clean).

  4. Are the glass pipettes for strong acids, basis, or organic solvents? Are there any other benefits to glass pipettes?

    >You will definitely need a graduated cylinder, maybe a few, in different sizes, glass or plastic (definitely glass if you're planning on working with any strong acids or bases, or using organic solvents).

  5. What sizes should I be looking for? I'm guessing polypropelyne is the preferred plastic type since that has the most available on Amazon. Is this Set of 7 Polypropylene Cylinders sufficient? What size glass cylinder would be the most common for home experiments with strong acids, bases, or organic solvents?

    >You will find a scale, accurate to at least a tenth of a gram, to be an invaluable tool.

  6. Could you please recommend a specific scale, or at least a type? I'd like to spend as little as possible without getting a piece of junk. Is there anything available for under $100?

    >Some litmus or pH paper will be useful.

  7. Most of these seem to be range limited. I found what appears to be a full range paper or a set of papers that provide full range. Would you recommend either of these?

    >Oh, and a thermometer, of course!

  8. I thought this one was simple until I looked it up. What exactly am I looking for here? Infrared Thermometers seem like a good idea because they don't physically contact the sample, but I'd like some guidance with regard to a trusted brand.

    >If you want to dispense precise quantities of any liquid, a 25 mL burette will be your best friend, though it's certainly not necessary.

    8.a) This one seems relatively straightforward. Finally!

    >a volumetric flask, for making precise stock solutions.

  9. Size? I've tentatively added a 100ml and 500ml to my list. Is Karter Scientific considered good quality?

    >A few Erlenmeyer flasks, for mixing things.

  10. This set of Erlenmeyer flasks seems like a good place to start. Which sizes do you find yourself needing most often?

    >A volumetric pipette, for making equal aliquots.

  11. Wow, these things appear to be quite expensive. What types of home experiments would it be difficult to do without a volumetric pipette? This one will probably wait until the need arises.

    >Oh, and if you just want your lab to be that much more mad sciencey, you could have a distillation flask and a few condensation tubes bubbling in the background. If you want to make a significant investment, you could get a magnetic stirring platform, maybe one with good heating powers. Also great for whisking up an egg, or keeping some batter moving while you make pancakes. Pricey, though.

  12. I'll probably stay away from the distillation flasks and condensation tubes until I stumble upon an experiment that requires them, but the magnetic stirring platform looks like a much cooler way to make coffee in the morning. Is this stirrer from Hanna Instruments any good?


    Thanks a ton for putting together that list!

    EDIT: Formatting
u/MountSwolmore · 2 pointsr/steroids

This was from DL:

You guys convinced me to home brew. Especially after I just did some math on what my latest $2k purchase would get me.

Putting together the list, will be refining as I learn more.

u/caseycoco123 · 1 pointr/PectusExcavatum

No problem. It's called an Spirometer.

You can easily buy some online like this one: https://www.amazon.com/dp/B000PAR7KQ/ref=cm_sw_r_cp_apa_i_xTbxDbMHNWBF6

My experience was different since the surgery opened up my chest more because of how extreme my sternum was indented and was pressuring my organs. HI of 9.8

u/chadherrella · -8 pointsr/singing

i don't believe in warm ups...just sing the song you want to perform...make sure you execute everything correctly...if you are not going to perform scales in publc, don't sing them...if you do want to sing scales use phrasing so at least it simulates a real song.

I usually only sing never more than an hour. You naturally get tired. You can sing for more than an hour but your body will eventually tire out and even if your mind knows the correct technique your body may be too tired to execute it and you will end up losing your voice.

actually the whole session you just posted is an hour, so I wouldnt wste time on warm ups if you want to sing longer before you get tired.

​

I would also exercise the correct breathing. Purchase an incentive spirometer --> https://www.amazon.com/Voldyne-5000-Volumetric-Exerciser-Each/dp/B000PAR7KQ/ref=sr_1_4?keywords=incentive%2Bspirometer&qid=1574556171&sr=8-4&th=1

will help improve breathing