API REPLACEMENT TEST TUBES WITH CAPS For Any Aquarium Test Kit Including API Freshwater Master Test Kit 24-Count Box

Nice. Same as the originals. I wish they sold boxes of 5 or 10 but I am pleased about them anyway

My son accidentally broke two of the glass test tubes that came with the ammonia and pH test kits. Just when I needed it most, I had nothing. The pandemic made it worse, where Petco and PetSmart were always out of stock. So, I made sure that I ordered a set of 24 in case of more accidents. The glass is not that thick but sheer so that you can make a good color reading which is important. Im skeptical about using the plastic bottles because Im not sure how clear they would be to make a good reading. Plus, I prefer glass for the share visibility. I wish the glass was more durable though, because the cleanup SAR another issue, tiny glass pieces can be missed and end up in your Barefoot. Ouch! Overall: good for sheer visibility color check. Value: could be cheaper as glass always needs to be replaced when broken.

I needed these SO BAD (and will probably need more again soon). The glass tubes just break so easily, and its REALLY HARD to find more! I got this larger box, and everyone around me wanted to buy just a few off of me! We ALL needed them!

Two original tubes were broken during the tests. I hope these last much longer. Good price.

Needed more than just the 4 tubes included in the master test kit. This was exactly what I needed!

Very helpful when you have more than one tank!

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So happy to find these. Over the years I always manage to break a few. Now I don’t have plenty of vials for all my different test for my multiple tanks.

I dropped all of my test tubes and they shattered, I bought this as a replacement, they are the EXACT same tubes (with 5 mL mark) that come with all API test kits, caps included

They are standard thinwall flat bottomed round 5 ml glass test tubes with plastic cap, that you find in the API test kits. If youve lost or broken a few in your test kits, or have more than one system to test, its nicer to have extras. Only fault is the box is very thin flimsy postersheet type cardboard, and in Amazon fulfillment, the other contents of the box shifted and smashed a few. I didnt deem it bad enough to go through return and replacement but do be warned, the boxful as is is pretty fragile, so if you need a full 24 you might end up a few short with one box. They will also work with the Tetra tests, anything that needs a 5 ml water sample, they will work.