upvoted.top:Centrifuge Separation Additional $5 Off Call Now

Centrifuge Separation Additional $5 Off Call Now


The series of centrifuge frame is made of Steel plate, can be operated conveniently.

It can be used to make qualitative analysis and biochemistry labs widely.

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Time to actually do something FOR SCIENCE: I’m a science teacher at a low-income rural middle school. We were just given 5,500 dollars to make a science lab. What do I get?(r/AskReddit)

First, if you can save some of the money, do so. Better to have money to spend on something cool when you think of it than to spend it on something you wind up not using.

I’m also going to guess you have a small budget for consumables (chemicals, nitril gloves, swabs, lightbulbs, batteries, diodes the kids inevitably blow up, pH paper, etc.), which is enough to at least cover doing a few labs. I am going to also assume you’re not adverse to some improv science using stuff from the hardware store.

I will also assume you have access to a computer and video projector.

If you can’t save it, here’s my list.

Essential: * Classroom set of splash and impact goggles (be sure the goggles you buy can do both): $315

  • 5 scales, with a 0.01g precision, 200g range: 20×5=$100

  • Assorted chem glassware (I can itemize if you’d like): $400

  • Assorted lab hardware: $300

  • 10 Sets of Mirrors and lenses: $260

  • Tuning forks: $5

  • Vacuum filtration and hand pump vacuum: $50

  • 15 Hand crank generators: $160

  • 15 Battery holders: $15

  • 5 spectrometers: $45

  • 15 magnifying glasses: $75

  • Variable regulated power supply (min of 0-15V, ideal 0-30V): $100

  • 3 Almost decent multimeters (lots of requirements on this): $240

  • Breadboard, jumperwires, and enough electronic components to top out your knowledge of the subject (I can go into more detail here): $150

  • Butane torch: $30

  • Class set of electronics components (lightbulbs, resistors, leds, buzzers, alligator clips galore, motors, and whatever you might do a lab on): $200

  • Rock set: $50

  • 2 sets, hanging spring scales (markings in newtons): $70

  • 10 laser pointers (ideal if they can stand horizontally on their own): $50

  • Centrifuge (20ml min capacity): $60

  • Plankton net: $85

  • Trinocular biology microscope: $400

  • Boom trinocular dissecting microscope: $350

  • Wireless weather station: $40

  • Electroscope: $40

  • Hooked mass set (the hooks are really important in a lot of demos): $60

  • Pulleys: $250

  • 15 stopwatches: $120

  • 5 sets of color filters: $50

Wizbang optional (but cool):

  • Electrolysis setup: $25

  • High voltage power supply:$150

  • Crookes tubes (requires HV power supply): $80

  • Diamagnetism kit with pyrolytic carbon: $30

  • “Newton’s Nightmare” toy (demo of lenz’s law): $20

  • Wizard stick toy (actually a van de graff): $30

  • Class set of breadboards and components: $300

  • Cheap oscilloscope: $100

  • SpikerBox (a neuroscience probe for home use): $100

  • Arduino and assorted parts (you will have to take some time to learn it): $150

  • Magdenburg hemisphere: $40

  • Electric vacuum pump: $200

  • Vacuum plate and bell jar: $220

  • Tabletop lab incubator (keeps temp at 37 degrees): $380

  • Premade slides of mitosis: $20

  • Premade slides of general biology: $60

  • Radiometer: $10

  • Combination stirrer and hotplate: $150

  • Soldering iron (40W min): $80

  • Cleaned bones of a few mammals: $350

  • “Student” microtome: $110

  • Proper van de graff: $185

  • Class set of lab aprons: $245

  • Density cube set: $35

  • Moderate neodynium magnets (don’t go overboard on size, they are more dangerous in a classroom than people realize): $50

  • Photogates and timers: More than they should be ($745 at Fisher, but should be much less)

  • Dissection trays and kits: $300

  • Levitron toy (floats a top using a dynamically controlled electromagnet): $30

  • Dewar flask (necessary for liquid nitrogen, obviously requires a source of liquid nitrogen to be useful): $175

  • Superconductor kit (requires liquid nitrogen supply and dewar vessel): $50

  • Classroom set of 15 cheap multimeters (assume they will measure volts but kids will burn out the ampmeter part immediately, some more advice is needed here): $120

  • IR Temperature sensor: $30

I could probably come up with other stuff, but this is a start. I am fairly sure these prices are realistic, although I did a few off the top of my head. Be sure to search amazon and ebay; do not assume Fisher Scientific, Flinn, or any of the other big education catalogs are well priced. It is rare to find a low price from an educational supply company.

I was more or less writing down what I had or wanted to have as a high school physics and general science teacher, but it was off the top of my head. I may have missed some critical items.

Obviously, some things are useful together, others are not. I put lab aprons in the optional part because I assumed you were not doing a lot of highly hazardous labs. In fact, if you are doing something that the lab apron needs to function (not just keep kids from having wet pants), you will need a more extensive safety plan (a shower and eye wash station at a minimum).

Your room seems to have desks, not tables. You might consider requesting tables, since kids will need to work in groups on many projects.

Your post mentions electrophoresis. It’s cool and within the realm of high school or middle school science, but it requires a lot and gives very little. A gel box is only about $40, but unless you can make your own power supply (roughly 40V), that might be another $80. All the materials for DNA work are expensive as well, unless you’re planning to run gels without real stuff in them (there are “simulation” kits). Gels are loaded with micropipettes, which are expensive themselves and require disposable tips (you can get away with fix volume micropipettes, but it is generally laborious). Ultimately, the lab procedures are long, and the results are not wizbang-impressive. That’s okay for AP bio, but really is dull for a 13 year old.

I am fairly sure the prices are realistic for the bottom end of the market. Some of these are surprising; search for a centrifuge and you’re likely to find they are $1200 and up, for example. But you can get one new for $60 on amazon (full disclosure, I don’t know if it works well, but a centrifuge is awesome for all sorts of things). If you have any problems finding something, let me know. I didn’t itemize the glass and lab equipment list, but those are partly dependent on what you want to do. I guessed a price based on 5x the lab glass and equipment cost listed in Thompson’s fantastic book “Illustrated guide to home chemistry.” Some of the glassware may not be useful to you, other parts you may need more of.

Obviously there are awesome things I would love to play with (and kids would get a kick out of) but no one could afford it for a educational lab (eg high speed video camera, thermal imager, etc.), but I left those off.

Finally, the best lab adapts to students’ interests. My list is a set of general lab equipment, but there are lots of demos which require a few bits of something special. YouTube, other teachers, Walter Lewin’s MIT (free opencourseware) physics lectures, or books can provide you with additional ideas. Some of those might require a few bits and bobbles which I didn’t put here.

tl;dr Animatronic dinosaurs

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