Best test lab tubes according to redditors

We found 161 Reddit comments discussing the best test lab tubes. We ranked the 45 resulting products by number of redditors who mentioned them. Here are the top 20.

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Top Reddit comments about Test Lab Tubes:

u/tasari · 22 pointsr/bestoflegaladvice

Hell, they even make fake tampons designed to sneak alcohol into venues in. It's totally possible.

u/farptr · 19 pointsr/whatisthisthing

It is an unblown plastic soda bottle preform. They're sold as water tight small containers so this could have been used for anything.

u/plazman30 · 10 pointsr/Aquariums
u/Nyxian · 9 pointsr/trailmeals

Salt & pepper covers me most of the time. Occasionally I'll want olive oil. I use small plastic test tubes with screw lids. They are 5.08 grams and 10 cents each, and hold 15ml. For reference, that would be about 140 calories of olive oil.

The amazon link says 10ml, however a quick water test shows them holding 15-16ml.

They are strong and durable, and resistant to being crushed. Also really useful for medicine or other things you might need to bring along.

u/jake_kulp · 8 pointsr/whatisthisthing

Definitely looks like a geocache made from a soda bottle preform. would explain the 'fish eye lens' and the soda bottle style cap.

u/AryaStarkRavingMad · 8 pointsr/TrollXChromosomes
u/Pac_management · 7 pointsr/Homebrewing

They are actually made for soda bottle production. You can usually find big packs for cheap.

u/MachinatioVitae · 7 pointsr/Survival

Hey, thanks! Yes, that's the one I was thinking of. I just couldn't find it. Idk about better though. They're different for sure, but they're both made from bottle preforms, so the tube strength should be the same.

The pocket reel comes with:

  • 1 pocket reel
  • 4 fishing hooks
  • 4 removable sinkers
  • 2 metal spinner lures
  • 3/4" bobber
  • knot guide with directions
  • 45' spool of fishing line

    The one I linked comes with:

  • 1 Heavy duty plastic tube with screw top lid.
  • 24’ of 20# monfilament fishing line
  • 3 #2 Eagle Claw Hooks
  • 3 #4 Eagle Claw Hooks
  • 4 #3 Split Shot Lead Sinkers
  • 4 #7 Split Shot Lead Sinkers
  • 2 Slip Bobbers
  • 2 Attached Bobbers
  • 2 Various colored Jigs

    So, with the pocket reel, you get 4 hooks instead of 6, 1 bobber instead of 2, 4 sinkers instead of 8, metal spinners instead of jigs, but almost twice as much line and a "knot guide".

    Seems like about a wash to me. I should note that I don't have a horse in this race, I've never used either and am not affiliated with either shop. The kit I posted was one I found a month or so ago while looking for the one you posted.

    Personally, I went with neither and just bought some bottle preforms for about a buck a piece, filled a couple with the fishing gear I already had and used the rest for other camping gear: spices/oil for cooking, match case, pill bottles, tinder case, etc.
u/PM_ME_YOUR_VALUE · 7 pointsr/Dynavap
u/neuromonkey · 6 pointsr/geocaching

They are soda bottle preforms (or "baby soda bottles,) which are uninflated 2 liter soda bottles. Available here and on Amazon, and other places.

I must say that posting a "these just arrived in the mail" without providing a source is a little less helpful that it might be. OP? Your source?

u/strikt9 · 5 pointsr/CampingGear

My problem is its always easy to “if I have that it’s hardly any more to include this” myself into a monster pack

Mine is a 3.5 x 5.5 x 7” soft pack that weighs 30.5 oz

Byrd Rescue 2 serrated knife
Pill case with Robax, Motrin, antihistamine.
1 roll each medical mesh tape, paper tape, electrical tape.
1 med ziplock freezer bag with a handful of bandaids.
Rite in the rain note pad.
Scissors (klien 2100-7, no idea where/why i got them but they’re a great size for this)
1 med ziplock freezer bag with 1 8x10” compress, 8 antiseptic wipes (provodine-iodine & benzalkonium chloride), 2x iodine ointment, 4x cool jel packets.
Small container with imodium, tiny tube of polysporrin, and a strip thermometer.
Small tube of Q tips.
Small tube with a dozen UCO stormproof matches.
Exotac nano striker.
Travel pack of tissues.
A pair of vinyl gloves (wrapped).
2x unlubed condoms (wow those expired a while ago).
Thumbprint 4 in 1 screwdriver
3x pairs of foam ear plugs (dont remember the reasoning but they weigh nothing)

Gauze roll.
Unflavoured dental floss.
Large sewing needle.

Bottle preforms are great small tubes for keeping things dry

For a while you could buy redbull shots. They were a great small container as well

edit:correcting formatting.
Edit 2: always put rolls of tape in a baggy. When theyre hot they can ooze adhesive and make your kit a mess

u/Davec433 · 5 pointsr/Homebrewing

I use Soda Preforms and freeze by filling half the container with yeast and topping off with a 50/50 solution of starter beer and glycerin.

I then put in an insulated bag with an ice pack to protect from freeze/thaw cycles.

The only thing I’d change would be to MAYBE use 1.5 ounce glass jars. Which you could keep longer and straight up boil to sanitize.

u/Souless04 · 5 pointsr/houseplants

Don't know why you got down voted

Soda Bottle Preforms and Caps (30/pk)


They are commonly called test tubes, and used as such in an amateur setting. They are also known as this other thing though. The original intended purpose.

u/ElitistRobot · 5 pointsr/funny
u/keirx · 4 pointsr/fountainpens

You can buy vials from Amazon or [Goulet] ( And you can get blunt syringes from [Amazon] ( or Goulet as well. You can also use any small glass or plastic vial you might have, I recommend small spice or jewelry jars. You can often find them in craft shops if that's easier and more local for you. Blunt syringes aren't as easy to find in person, but you can often find wood glue syringes like this in any local woodworking or craft shops.

u/Reinheitsgebot43 · 4 pointsr/Homebrewing

If you’re going to do that you might as well freeze it in soda preforms (take up less space) and slowly create a yeast bank.

u/LegalizeGayPot · 4 pointsr/vaporents

If you don't have a vape yet, get an Arizer, you won't regret it.

As far as containers go, check out bottle preforms. I bough a 100pk of these years ago and still have half

u/philthebrewer · 4 pointsr/Homebrewing

is this a shitpost? or do you just really like soda blanks?

I'm all for whatever reduces WL's cost but doesn't harm me.

u/UHElle · 4 pointsr/TakeaPlantLeaveaPlant

If you’re looking for a specific product, I’ve purchased a couple packages of borosilicate test tubes that work super well and would work wonderfully in this.

I have 2 packs of these.

u/graaaypes · 4 pointsr/Homebrewing

Personally, i bought some soda bottle preforms ( and overbuild starters, save a vial or two, and use that to rebuild starters. Havent bought yeast in a hot minute.

u/ps3isawesome · 4 pointsr/SavageGarden
u/taydaygrim · 3 pointsr/vulvodynia

I bought them straight from my PT so unfortunately I don’t have a link but here are similar to what I have! The important part is the rounded bottom- it also depends on how large you can fit. These are slightly larger than my middle finger for reference.

u/gothic_potato · 3 pointsr/MolecularGastronomy

Well you can't really infuse anything into the dry ice because the industrial systems used to produce it use multistage separation and cooling. You might be able to do a "soak", but what you will get is an outer coating of your liquid that is frozen around the dry ice pieces. Then you could throw these into your drinks and watch the fireworks go off. This will almost certainly have the exact same effect as if you had just thrown in dry ice pieces into the drink, since the coating will dissolve into the liquid faster than being attached to the CO2 gas. But if that's what you want I would break up everything into the sizes you want, throw them into a cooler (the dry ice will be your main source of temperature regulation, so make sure it is well insulated), and let it do its thing. Not sure how long these will last, so it would be best to make them within a couple hours of serving time

If what you are going for is to have the sublimating CO2 carry your flavor compounds into the air, you're going to have to go via a different route. A couple modernist restaurants do this type of thing, where they build a center piece and pour their aromatic liquid over it. This massively changes the perceived flavors (and adds a bit of showmanship to the dinner), since a good portion of taste is dependent on associated smells. Here is the Fat Duck doing it.

If you wanted the drink to carry the smoke, rather than a center piece, then you are going to need some custom glassware. Not sure what your budget is, but you could have something designed and made to suit your needs. If that seems a tad too much, I would build something from existing glassware. Take a normal glass and throw one of these short test tubes on the side, or get some plastic tubing and run it spiraling around the outside of the glass (just depends on your style and what you are going for). After that you can fill up the well with dry ice dust, and when you are ready to present pour in some aromatic liquid. You're going to want to make sure nothing comes out while your guests are drinking from their glass, so I would recommend a stopper of some sort that you have heavily perforated or something porous like a piece of sponge that you have cut to the right shape.

Not sure if this answers your question, but I tried to cover all possible bases. Best of luck with your cocktails!

u/stophauntingme · 3 pointsr/fandomnatural

>so I have just had a brilliant idea for hiding booze: inside a fake tampon applicator. They'll never know! I'm so grossed out at myself for even thinking of this.

it's literally a thing! lmao

I wanna bring this in... lol

u/Whittigo · 3 pointsr/Homebrewing

It won't be impossible, it will just mean using a different container. I've been holding onto a ton of the tubes for a while for saving yeast. Also:

if you need more and want to stick with vials.

u/justwhomever · 3 pointsr/espresso

I bought 2 sets of these:
DEPEPE 25×200mm Glass Test Tubes with Cork Stoppers and 1 Brush, 80ml, Pack of 12

And the rack that they kinda fit in:
Stainless Steel Test Tube Rack, 25mm, 24 Place, Wire Constructed, Karter Scientific 234O3

u/bplipschitz · 3 pointsr/Homebrewing

I use either mason jars (grabbing total yeast cake from fermenter) or bottle preforms (remnants of starter).

u/dev_c0t0d0s0 · 3 pointsr/BuyItForLife

This is going to sound crazy, but hear me out.

Soda bottle performs. Soda Bottle Preforms and Caps (30/pk)

These things are insanely strong and I've gotten one to hold over 200psi. And if you lose a cap you can get a replacement at any gas station.

u/desktop_version_bot · 3 pointsr/preppers
u/MacJointHead · 3 pointsr/vaporents

Someone on here the other day told me about using their WPA as a bowl and I have to admit it is my goto now. You would think it would be hotter since it is shorter but it’s actually cool and extremely flavorful. I call it my snubnose

This is the one I got off Amazon

u/wonderboy37 · 3 pointsr/AskMen

These are a thing

u/benmagoo1 · 3 pointsr/maybemaybemaybe

Smart to have an actual tube of lotion.

If I was a girl I’d use these tampon flasks

u/vinpaysdoc · 3 pointsr/Homebrewing

Soda Bottle Test Tubes is what I use. Mason jars would take up way too much space in my fridge.

u/d34thw41k3r · 3 pointsr/trees

For any fam that wants this, Amazon's gotchu!

EDIT: They're actually a bit cheaper at Educational Innovations, its the second link when searching for where to buy unformed soda bottle.

u/Kush420coma · 3 pointsr/trees
  1. It's a tube where you pour alcohol in it and put it in a faux tampon wrapper so you can sneak it around. In my case, I've used it to put my blunts in it for my boyfriend and I for Mad Decent Block Party this Saturday. (Currently on a t-break, excited to smoke again in a couple of days!)

  2. Yes! I love that picture. I bought it from Salvation Army a couple years back. I use it as my blunt rolling station.
u/geekymama · 3 pointsr/Aquariums
u/tubasco · 3 pointsr/GrassHopperVape

I use a Santa Cruz shredder and store it in these:

There are plastic ones too, (doob tubes) but I prefer the glass.

Just pour the shredded into tube and pour into hopper. I shake the tube before opening it to loosen the pour.

u/PerilousAll · 3 pointsr/crafts

Really nice! I thought you probably put an inverted test tube up through and above the base before the resin pour in order to get that much light inside.

u/romario77 · 2 pointsr/Homebrewing
u/Talltimore · 2 pointsr/baltimore

Anywhere has booze if you try hard enough.

u/katerkline · 2 pointsr/vaporents

I got one off of amazon. Here’s the link The fit is a bit loose, but it’s manageable. I love mine and use it daily.

u/mks113 · 2 pointsr/mildlyinteresting

2 litre soda bottles actually are shipped as preforms that can be expanded before they are filled. I guess heating them up without pressure returns them towards their original size?

u/Drakonaf · 2 pointsr/CampingandHiking

I use a small Coca Cola bottle they used to sell. 150ml I think. I also know you can buy a 2L bottle in it's pre-inflated state. Soda Bottle Preform

u/Joma449 · 2 pointsr/mildlyinteresting
u/carlodelpizzo · 2 pointsr/mildlyinteresting
u/roboto6 · 2 pointsr/bettafish

I got these. I use a 5ml syringe (like what you use to dose kids liquid meds) to measure out water from my tanks into those test tubes.

My only tip would be, the lids can be a bit fussy, make sure the top inside liner is flush to the top (poke it down if it isn't) and they'll screw on better.

u/BlueLotusEater · 2 pointsr/onebag

Test tubes essentially, with screw caps. Plastic would be lighter, maybe less durable.

Test tubes like these tubes

u/JustPandering · 2 pointsr/Homebrewing

I built this for about $20 (not including the erlenmeyer and the stir bar).

I got the cigar box a while back at a second hand store.

Here's the USB powered PC fan I used:

I chose a usb fan so that I could power it with an android usb phone charger and not screw around with splicing wires.

Here's the magnets I used (just needed one though):

Aside from that it just took a few odd nuts, washers, and a bit of superglue. I had to bore the hole in top of the cigar box because the box turned out to be a bit too thick (sorry Pepin Garcia!) to get enough attraction between the magnet and the stir bar. I think I might have had better luck with stronger magnets or a different stir bar but oh well.

As someone suggested I first glued a washer to the fan so that I could move the magnet around a but to find the sweet spot where it didn't shake too bad then I glued the washer in place.

I used the long bolts/nuts that came with the fan to attach it to the lid (you can see the bolts in the first picture). Between the top of the fan and the lid I had to add washers to keep the fan from rubbing on the cigar box.

That's pretty much it. The fan has a variable speed control but I get a small vortex on the lowest setting, and higher settings throws the bar off the magnet.

Now I just need to wait for my soda preforms to show up so I can start saving a bit more yeast after I use the stir plate!

I got the idea for using the soda preforms from here:


u/rainmanak44 · 2 pointsr/Homebrewing

Have you considered bottle blanks? Pretty cheap option and just like what White labs used for years. Bottle Blanks

u/SloppyJoeBeaver · 2 pointsr/OutlandishAlcoholics

Have a guy place it next to the frank and beans. A bulge is normal and the door man isn't likely to touch there. Or there's always the Wine Rack or the tampon flask.

u/mousec7 · 2 pointsr/TrueBlood

Doing some sort of shot into these might be appropriate. They're cheap enough and a bit of gold paint from craft store might be enough to glam it up.

u/Verdris · 2 pointsr/fountainpens
u/jamesvreeland · 2 pointsr/Goruck

Are you looking for just the pouch or a complete kit? Bumps and bruises or blowout kit?

I don't run it on the outside of my bag, but my EDC medical setup is a CAT, Israeli bandage, trauma shears, and some everyday meds (IB, benadryl, etc) in a crush-proof tube shoved into an M16 magazine pouch.

Mag pouch -
Pill tubes -

u/Maeby78 · 2 pointsr/funny

These fit nicely in your purse, and security never messes with them too closely.

u/Elk_Man · 2 pointsr/Homebrewing

Assuming your pints are partially filled with spent wort, you can siphon that off and just fill old White Labs tubes with the yeast. If you don't have any old tubes kicking around you can just grab some of these

u/esseffgee · 2 pointsr/CampingandHiking

Oh wow, I'll have to give these a go. I've been using a few of the Nalgene Travel Bottle Kit bottles for olive oil, hot sauce, etc, and soda bottle pre-forms for batteries and some other stuff. But they're too big for most things like seasoning/spices, and not big enough for stuff like pancake mix.

u/Stinky_Fartface · 2 pointsr/Homebrewing

I do a similar thing, but these are the tubes I use. I bought two sets of them several years ago and they still work great. I replace the caps every so often. For the rack, I just keep them in six pack holders and put them in the keezer. I fill the unused vials with StarSan solution and store them that way.

I'd also like to add that, after I have racked a new beer into the fermentor, I pour the leftover trub into a mason jar, and then let it sit in the fridge for a day. Usually the trub separates to the bottom leaving a fair bit of usable wort. I give it another quick boil just to make sure its sterile and then make a small starter of something. After pouring off much of the beer, I can usually get about 10 vials of slurry.

u/kkuehni · 2 pointsr/Aquariums

test tubes

You can buy the holder also it’s in the add on part.

u/baconbabe456 · 2 pointsr/weddingplanning

I am struggling with this too, so I will take notes from this thread (thank you).

What I am doing thus far:

tampon flasks because I found them online and thought they were hilarious, and my girls are similarly natured

A mini bottle of her favorite alcohol for each lady (they are all of age)

Custom compact mirrors that I found on etsy; I can customize one for each gal based on her interests (one is getting a disney themed, one is getting PSU, etc)

A necklace to wear for the wedding (so technically not a gift, but they are beautiful so hopefully they will like them anyhow)

Also providing mani/pedi the day before (well my MIL is gifting this to us, so SHE is providing that), hair and makeup for the service, and getting ready food (breakfast and lunch).

As far as other gift ideas though, I am completely clueless. I wanted to make little gift boxes or wedding survival kits for each of them, but I dunno yet.

u/Chernoobyl · 2 pointsr/StonerEngineering

Bought some plastic vials off Amazon, fit perfect in my bong. I used an exacto knife that I heated with a lighter to cut into the plastic. Made a few different patterns, the wrap around one works really good, gives a nice clean pull.

u/AlGreat · 1 pointr/trees

Or you can buy some test tubes from amazon pretty cheap and use that since it has an air tight cap.
They're plastic so its better than having glass

u/savage4618 · 1 pointr/geocaching

THESE are cheaper and more durable/waterproof. A little bit of spray paint or camo tape and it blends in just as well as the other mentioned containers. In my area we have a lot of waterways and these make GREAT paddle caches.

u/cinfulmusic · 1 pointr/festivals

If you're going with a girl use these tampon flask

u/moxievernors · 1 pointr/toronto

Female friends coming with you? Load up on [these.] (

Wear a kilt, daring them to feel you up, while wearing a garter flask, or make your own.

u/Feraphic · 1 pointr/fountainpens

These? The caps are orange but they look similar enough.

u/besullivan8844 · 1 pointr/dice

Rainbow-B 20pcs 25x140mm(45ml) Clear Plastic Test Tubes with Caps, with 1 100ml Plastic Beaker

u/masterian151 · 1 pointr/ants
u/ridedpu · 1 pointr/trailrunning

2-liter bottle blank? Amazon

u/SUICUNE_FUCKER · 1 pointr/ants

I got 60 when I bought mine and I'm currently using about half those. Buying in bulk tends to be cheaper over time as well. The ones I carry on me as "just in case" tubes haven't gotten pretty cloudy due to scratches and oxidation and a few have even cracked a bit just from being carried around constantly. I think I've managed to straight up lose two of them to top if all off. Not a terrible investment and they can be used for other things as well.

Here is what I'd probably get in your case OP. I'd soak them in soapy water and thoroughly wash them out first before I'd use them. This one is pretty good as well if you're not looking for any large species like camponotus. Down side to these would be they're a little small in terms of diameter so they wont really plug and play with most formicariums you can buy.

Personally I'd go with the first option. Its pretty proven and the smaller tubes will probably run out of water quicker. Oh, and its a lot easier to get queens into a larger test tube. I really need to get some larger containers for captures.

u/DonOblivious · 1 pointr/whatisthisthing
u/darksidesar · 1 pointr/mildlyinteresting

Soda Bottle Preforms and Caps (30/pk)

“All plastic soda or "pop" bottles start as a small plastic tube called a preform. When this preform is heated and blown into a bottle shape, it is ready to be filled with your favorite carbonated beverage.”

u/hrafnkell · 1 pointr/mead

Just buy some if you like them...

I run a homebrew store and absolutely hate the damn vials. Bags are much easier to keep track of, arrange and take less space.

u/glitterpumas · 1 pointr/IllegalLifeProTips

my roommate uses these


they're called soda bottle preforms and he keeps joints in there and instead of the caps he uses corks, keeps the smell locked in

u/andersonmatt1125 · 1 pointr/Homebrewing

Here's a link to those tubes. They're pretty common, you might be able to find a better price than that.

They're food-grade (obviously) so they supposedly work well. Haven't used them myself though. These should only be used for starters though. After storage you're likely not going to have enough viability in a single vial for a healthy pitch.

u/legolasmyeggolas · 1 pointr/Ultralight

Something similar to the vials are [soda bottle preforms.] ( I heard about them recently, but can't remember the exact context. Might be heavier than necessary.

u/phekylmadder · 1 pointr/Homebrewing

I've heard somewhere somebody suggested soda bottle preforms. I've no experience with them but seems a good idea for making slants.

u/RESDEP · 1 pointr/mildlyinteresting

It’s a Parison, or preform.

Soda Bottle Preforms and Caps (30/pk)

u/reigningmagnificent · 1 pointr/mildlyinteresting
u/azylee · 1 pointr/fountainpens

These are 60c per vial, but I'm guessing that the ink retailers get them for much less.

u/ccc1912 · 1 pointr/Homebrewing

When I first started harvesting yeast my thought was to use what it come in, Test Tubes

u/no_talent_ass_clown · 1 pointr/Frugal

For spices, you can get test tubes with a rack and cork stoppers off Amazon, or at a local scientific supply surplus. Like this.

u/UnsungSavior16 · 1 pointr/Homebrewing

I use these polycarbonate test tubes, then store them in the fridge. Ideally I'll be getting a small mini-fridge soon!

u/happylifegoodlife · 1 pointr/MDMA

why dont you buy this. I know a few of my friends did it plenty of times and got it all in flawlessly

u/PangeaDestructor · 1 pointr/Homebrewing
u/VoidSpectre · 1 pointr/ants

I just got these ones, I haven't gotten a chance to try them out yet though.

u/sufferingcubsfan · 1 pointr/Homebrewing

I usually go 100 billion - same as comes in a commercial yeast pack.

I save them back in my original White Labs vial, or in one of these.

u/graybeardedone · 1 pointr/Dynavap

momentary switch $8.79 (for 25, you need only 1)

induction heater $12.99

project case: $12.98

mosfet: $7.99

power plugs $9.99 (you need only 1 pair)

test tubes $6.02 (cut in half, you'll break a couple until you get one you like)

on/off switch $6.50 (for 15, you need only 1)


in addition, you'll need some 18-20ga wire & solder, and a 12v/6a to 10a power supply

u/ponzi314 · 1 pointr/chinaglass

All you need is this

u/cwcoleman · 1 pointr/Ultralight


Warning - they do come in a BIG bag - 100 count. WAY too many for me to ever use. If you live in Seattle - come over and I'll give you a bunch.

I've also ordered bottles on You may have better luck there since you can by just the amount you need.

u/Paupy · 1 pointr/pics

Amazon. Soda Bottle Preforms and Caps 30/$23.39 USD

u/Insinqerator · -2 pointsr/mildlyinteresting