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Laboratory & ChemicalGL45 Blue Cap Media Bottles GPS-LAB-2857

GPS-LAB-2857 / Laboratory & Chemical

GL45 Blue Cap Media Bottles

The GL45 laboratory bottle is a borosilicate 3.3 reagent and media bottle with a standardised GL45 thread and a screw cap with a pouring ring, usually blue. Graduated and autoclavable, it is the everyday workhorse for storing media, buffers, solvents and reagents in life-science and chemistry labs.

GPS-LAB-2857Model Code100 ml – 20000 mlCapacity Range5,000 pcsStarting MOQFrom $0.32Indicative Price
Bulk quote guidanceFrom $0.32Final price depends on capacity, closure, decoration, quantity and packing plan.
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Specification

Details Buyers Need Before Quotation

ModelGPS-LAB-2857
Product familyGL45 Blue Cap Media Bottles
Capacity100 ml, 250 ml, 500 ml, 1000 ml, 2000 ml, 5000 ml, 10 L, 20 L
MaterialBorosilicate 3.3 glass (low expansion, ~3.3 x 10⁻⁶/K)
Thread / finishGL45 standard thread
ClosurePP screw cap (blue) with separate PP pouring ring
GraduationsPrinted approximate volume scale (enamel)
TemperatureAutoclavable 121 °C; usable to ~140 °C dry; thermal-shock resistant
DecorationDurable enamel graduations and marking spot
PackingCartoned individually or in counts; cap and ring fitted
Starting MOQStarting from 5,000 pcs; lower trial quantity depends on available stock

Product Knowledge

About the GL45 Blue Cap Media Bottles

Background, typical uses, construction, filling guidance and production notes for buyers selecting this container for bulk supply or private-label programs.

Overview & background

The GL45 media bottle — popularised by Schott Duran and widely copied — is the standard storage bottle of the modern laboratory. 'GL45' refers to its 45 mm GL-standard thread, which interchanges with caps and connectors from many suppliers. Made of borosilicate 3.3 glass, it tolerates heat, thermal shock and most chemicals.

Its blue PP cap and a separate PP pouring ring are designed for drip-free pouring, and the whole bottle is built to be autoclaved repeatedly for sterile work.

Applications & industries

Cell-culture media and buffer storage, reagents and solvents, sample storage, and autoclave sterilization in bioprocess, QC, pharma, food-testing and general chemistry labs. The GL45 thread also accepts ported caps and tubing connectors for bioreactor and fluid-transfer setups.

Design & construction

Borosilicate 3.3 glass with a GL45 thread, a retrace-free finish for clean pouring, durable enamel volume graduations and a marking spot. The cap and pouring ring are autoclavable polypropylene; the cap seal is typically PTFE-faced silicone or PP for chemical and temperature resistance. Capacities run from 100 ml up to 20 liters.

Handling & best practice

Borosilicate withstands autoclaving at 121 °C, but the cap must be left loose (not sealed tight) during autoclaving so pressure equalises — a tightly capped bottle can shatter or implode on cooling. Allow bottles to cool before handling. The printed scale is approximate (not Class A), so it is for guidance, not precise measurement.

Manufacturing & quality

Borosilicate 3.3 bottles are formed (blown or pressed-and-blown) from a low-expansion borosilicate melt, then annealed. The GL45 thread is finished to the GL standard so caps interchange. Enamel graduations are screen-printed and fired on. Dimensional and thermal performance are checked for autoclave service.

Build Options

Configure the Container, Closure and Packing Together

A packaging program is more than the glass. Closure, liner, fill process, label area and export carton should be confirmed together before the first sample or bulk order.

Capacity & Shape

Confirm brimful capacity, practical fill level, body proportions and label panel so the chosen size suits the product and the line.

Closure System

Match lug, CT, cork, pump or dispensing closures with the right liner for the fill temperature, viscosity and sealing method.

Glass & Finish

Clear or amber glass, sprayed color, frosting, embossing and decoration are checked against shelf presentation and light protection.

Export Packing

Carton partitions, pallet pattern, loading plan and shipping marks are planned for long-distance transport and warehouse handling.

Applications

Where the GL45 Blue Cap Media Bottles Fits

Share filling temperature, product acidity, viscosity and shelf-life target so we can check the container, closure liner and packing method before quotation.

Cell-culture media storageBuffers & reagentsSolvent storageSample storageAutoclave sterilizationBioprocess & QC labsPharma & food testingGeneral chemistry

Stock or Custom Build

Review available molds first, then evaluate color, decoration or a mold change if the project needs a differentiated retail look.

Sample Confirmation

Confirm capacity, closure fit, liner selection, label area and carton protection with samples before bulk production.

Export Preparation

Cartons, dividers, pallet loading and shipping marks are planned for distributors, warehouses and multi-country shipments.

Bulk Quote

Need GL45 Blue Cap Media Bottles With Closures, Labels or a Custom Finish?

Send capacity, quantity, closure, decoration and destination details. We will return practical MOQ guidance, sample options and export packing recommendations.

Request a Quote