Glass Media Bottle

What Are Glass Media Bottles?

Glass media bottles are borosilicate screw-cap storage vessels designed for preparing, autoclaving, and dispensing laboratory culture media, biological buffers, and liquid reagents. Unlike Erlenmeyer flasks with foam closures, media bottles have threaded screw caps providing a leak-proof seal for transport, dispensing, and long-term storage. Globe Scientific glass media bottles at MBP are manufactured from borosilicate glass (ASTM E438 Type I / USP Type I), supplied with polypropylene (PP) screw caps, and are autoclavable at 121°C. Choose clear borosilicate for most reagents; choose amber glass for light-sensitive compounds such as photodegradable stains, bilirubin standards, certain vitamin solutions, and riboflavin.

What you will find:

• Borosilicate glass media bottles

• Autoclavable media storage bottles

• Amber glass media bottles for light-sensitive liquids

• Graduated glass storage bottles

• Leakproof laboratory media bottles

• Wide-mouth glass reagent bottles

• Glass bottles with pouring rings

• Sterile-ready glass media containers

How to Choose Glass Media Bottles

Clear vs. Amber Glass
Clear borosilicate media bottles are appropriate for reagents that are not UV- or visible-light-sensitive. Amber glass bottles filter light below approximately 450nm, protecting light-degradable contents from photodegradation. Common applications for amber storage include: ethidium bromide solutions, crystal violet stain, bilirubin calibrators, vitamin B2 (riboflavin) solutions, and other photosensitive reagents. Choose amber glass when the reagent specification or manufacturer's instructions recommend light protection.


Wide-Mouth vs. Standard Neck
Standard-neck media bottles are suited for liquid-to-liquid transfers and dispensing. Wide-mouth media bottles allow easier filling with solid powder media (agar, broth powder, salt), scooping viscous materials, and thorough cleaning — preferred for culture media preparation where media powder is dissolved directly in the bottle.


Graduated vs. Non-Graduated
Graduated media bottles have approximate volume markings for guidance during media preparation without a separate measuring cylinder. Markings are typically ±5% and are not certified for precision volumetric work.


Cap and Pouring Ring
PP screw caps are autoclavable at 121°C. Loosen caps one quarter-turn before autoclaving to allow steam pressure equalisation. Some formats include a pouring ring insert on the neck interior that prevents liquid from running down the outside of the bottle when dispensing.

Specifications Context

Globe Scientific glass media bottles are manufactured from borosilicate glass conforming to ASTM E438 Type I and USP Type I, providing chemical resistance to acids, bases, alcohols, and most organic solvents. PP screw caps are autoclavable at 121°C; verify PP compatibility with any strong oxidising acid or halogenated solvent before use. Amber glass attenuates light below ~450nm, protecting photosensitive contents during storage. MBP stocks clear and amber glass media bottles from Globe Scientific for labs in the US, Canada, and worldwide.

Get a quote today from the MBP Team for your lab requirements.