Sample Vials
Tubes and vials for general collection, storage, and transportation of samples; available in a variety of colors, sizes, volume capacities, and material compositions; may be sterile, non-sterile, and/or autoclavable; may include caps.
The term “vial” is somewhat undefined and is usually described as a small, cylindrical, and flat-bottomed container used to hold liquids. Most sample vials are made of plastic or glass, and include a separate or attached lid or closure. Sample vials are categorized by material and also by their size or specific purpose.
Glass sample vials are categorized by the type of glass used to make them.
- Type I, Class A glass sample vials are made from low-expansion borosilicate glass
- Type I, Class B glass sample vials are made from an alumino-borosilicate glass
- Type II are made from soda-lime glass
Plastic sample vials may be made from a variety of resins, including:
- Polycarbonate
- Polypropylene
- Polystyrene
- Low-density polyethylene (LDPE)
- High-density polyethylene (HDPE)
Glass sample vials may be clear or amber-colored (to protect the contents from ultraviolet light). Plastic sample vials are available in a range of colors, including amber, natural, and clear resins.
Sample vials may have different types of closures, depending on their use and the material being stored.
- Screw caps
- For both glass and plastic sample vials
- May be closed or open
- Typically made from polypropylene or phenolic resin (with a variety of closure liners, including PE foam, PTFE, cork, tin, etc.)
- Flip-top
- Caps for plastic sample vials may be attached by a tether to the vial itself
- Also called “captive” closures
- Snap caps (external): Both glass and plastic sample vials
- Plug caps (internal): Both glass and plastic sample vials
Alkali Scientific 30mL Flip Top Polypropylene Sample Vials (1.01oz.) with Locking Tab, Tamper Seal, and Molded Graduations, 600/Case
30mL Flip Top Polypropylene Sample Vials provide a dependable solution for the collection, transport, storage, and packaging of liquid and solid samples. Designed for laboratory, field, and production environments, these vials help maintain sample integrity while supporting efficient workflows. Constructed from food grade polypropylene, they offer strong durability and chemical resistance for sensitive applications. The airtight, leak resistant design makes them suitable for food and beverage sampling, environmental and water testing, dairy analysis, veterinary use, safety programs, and general laboratory work. The permanent hinged flip top lid allows convenient one handed operation and prevents misplaced caps. An integrated locking tab with tamper evident breakaway seal adds security, while molded graduations provide clear, permanent volume reference.
