Feature: 1. Compact Design: With a diameter of 12mm and a height of 32mm, our 2ml sample vials are sized for efficient storage and portability, accommodating your diverse needs. 2. Clear Glass Material: Constructed from transparent glass, these laboratory vials allow for easy visibility of contents, ensuring quick checks and accurate sample management during experiments. 3. Evaporation Proof Sealing: Featuring an accuracy fit spiral cap with dual layer sealing made of silicone and PTFE, our vials offer excellent safety against evaporation, making them suitable for sensitive organic samples. 4. Easy Sample Identification: Each vial includes writable labels for easy identification and marking, allowing researchers to maintain organization and accuracy when dealing with multiple samples in the laboratory. 5. Time Saving Caps: Designed with short thread caps for quicker sealing, our sample vials require fewer rotations, saving precious time during frequent openings and closures, enhancing laboratory efficiency. Specification: Item Type: Sample Bottle Material: Glass, Plastic Application: Suitable for general laboratory use sample bottles, reagent bottles, storage of essential oils, mineralized cosmetics, eyeshadows, emulsions, lip balms, toners, creams, ointments, acrylic powder, and other beauty products Shelf Life: 5 years Outer Diameter: Approx. 12mm / 0.47in Height: Approx. 32mm / 1.26in . Package List: 100 x Sample Bottles 100 x Bottle Caps