20ml Clear Glass Vials with Screw Caps and plastic Stoppers,Small Lab Sample Vials with Lids, Leak-Proof Liquid Storage Empty Vial. 10PCS

Small, real glass, good quality top.

Just what I needed

The opening on this was perfect for measuring fluids I needed to apply with a small 1ml syringe.Also liked that it has plastic stoppers to keep leftover fluids from leaking and/or drying out

I don't recommend you carry the vials with you if there is ink in them. I tried this and it leaks in my pen case. Made a big mess.

I am memorized by the thrill of the botanical hunt! My mission: to collect a diverse array of vegetation samples for my bio lab, a quest that demands meticulous organization and secure storage. Enter the ETTSNU 4ml Clear Glass Vials – a set of miniature marvels that have become my trusted companions on this verdant expedition.Leak-Proof Champions: These vials aren't your average glass containers. They're veritable warriors against leakage, boasting screw caps equipped with PE pads. Imagine a double layer of defense against precious plant extracts or delicate spore solutions – a testament to the engineers' understanding of a botanist's woes!A Treasure Trove of Supplies: Each package is a treasure chest overflowing with botanical bounty! Twenty vials, each a crystal-clear testament to scientific precision, stand ready to hold the spoils of my exploration. And the bounty doesn't stop there! Screw caps, droppers for effortless sample dispensing, and even labels for meticulous organization – the ETTSNU kit provides everything a botanist on a mission could need.Built to Last: These vials are crafted from high-quality, chemically resistant borosilicate glass – a testament to their resilience. Whether my samples boast acidic, neutral, or alkaline properties, these vials stand firm, ready for repeated use. Sustainability and scientific exploration go hand-in-hand, after all!A Universe of Applications: The versatility of these vials knows no bounds! From storing precious liquid extracts to preserving fascinating plant specimens, these miniature marvels are a botanist's dream come true. Imagine tiny ecosystems preserved within their clear walls, each vial a portal to a hidden botanical world.A Customizable Collection: The ETTSNU kit offers a buffet of options, with sizes ranging from 4ml to 20ml, and quantities of 10 or 20 vials per set. This allows for a customized approach to my botanical endeavors, ensuring I have the perfect vial for every plant treasure I unearth.The Verdict: A Botanist's Essential ToolkitThe ETTSNU 4ml Clear Glass Vials are more than just storage containers – they're an essential tool in any botanist's arsenal. Their leak-proof design, comprehensive kit inclusions, and durable construction make them ideal companions for collecting and preserving a diverse array of plant life. Whether you're a seasoned researcher or an enthusiastic explorer of the botanical world, these vials offer a winning combination of functionality, versatility, and value. With the ETTSNU kit by my side, my expeditions are sure to yield a universe of botanical discoveries!

The lids are strong, not brittle, and seal well. The glass isn't super thin like some are, and the bases are pretty flat and even. Better than most.

These tiny bottles can come in handy for a variety of things other than just essential oils, etc. I used one for a keepsake bottle with sand from a beach. The small size is good for both crafting or storing tiny things. The quality is great, I don't have any issues with them. If you do plan to store liquids in them, I would keep them upright just because they don't have an actual plug or seal in the lid, so I don't know if they will leak or not.

These were well packaged, 20 tiny little glass vials. I'm using them to mix my own fountain pen inks. The little pipettes came bent in half in order to fit in the box, but they did go back to their original shape. The pipettes are marked with milliliters, too, but you can only extract up to 3mL of liquid with one pull.The glass vials are good quality and don't leak when shaken. They do hold 4 mL up to the shoulder of the bottle. The vials do not have any measurement markings on them, so you would have to measure accurately some other way.