API Replacement Test Tubes With Caps

Great tester kit, works really well with quick results

Excellent product exactly what was required.

Fantastic dint not realise they was made out of glass so now i realise why they bit on expensive side but I'm absolutely pleased with the product very well made and none was broken which is a bonus definitely worth paying the price for what they are api products are the best

Am extremely accident-prone, so am forever dropping and mashing these test tubes. The 24-pack is a great find, will hopefully last for a while.

after trying to take the cap off a test tube and taking most of the tube with it a got this replacement pack and it’s absolutely fab. the caps aren’t as tight (but still a perfect seal) so i’m not as worried about them breaking the test tubes as i try to get them open.

They are what they are, but they arrived on time (as they said), neatly packed with all intact. Going to make testing 5 tanks a whole lot easier from now for sure, with plenty to spare. Being glass should last longer than plastic tubes (which get scratched) & certainly easier to clean than plastic tubes (which in the past have also stained).

perfect set of spares test tubes even if slightly expensive, but good quality and correct size

Great, thanks

Awesome. Arrived ahead of schedule. NO breakage. I'm so happy I bought these. Much better than my plastic ones.

The API Replacement Test Tubes with Caps are a fantastic solution for anyone in need of replacement tubes for their aquarium test kits. I use an API test kit to monitor the water parameters in my tank, and these replacement tubes fit perfectly. The quality is excellent—thick glass that feels durable and resists cracking or breaking during use. The included caps are a great addition, ensuring no spills or accidental contamination of test samples, which is crucial for accurate results. These tubes are easy to clean and work just as well as the original ones that came with my API test kit. What I really appreciate about these replacement test tubes is how versatile they are. They fit not only API test kits but also many other brands of aquarium test kits, making them a great universal option for anyone who needs new test tubes. For anyone using an API kit, these are an essential and affordable replacement part that keeps everything running smoothly. I highly recommend the API Replacement Test Tubes with Caps—they’re high-quality, reliable, and perfect for maintaining your aquarium's water quality testing.

What was ordered. Replacements for broken ones from other test kits.

Received product in good order.

API test kits have switched over to using plastic vials. While less breakable, the plastic ones become stained if you dont promptly clean them out thoroughly. Also the plastic 5mm lines are often difficult to see. These glass tubes are the actual API tubes with the 5 mm fill lines and very secure caps. They are far easier to clean out than the plastic ones and if capped are less likely to spill. Now sure youll occassionally drop one and break it. But with this set you'll have plenty to replace broken ones and do as many tests as you want to compare before and after readings. I got a tube holder here on Amazon that also allows me to have several sets of the 7 tests I do displayed without risk of dropping them or knocking the off tables. Really is well worth having these if you do the API water testing much.