Glass Packaging FAQ

Glass is a rigid, nonporous packaging material used for cannabis flower, concentrates, pre-rolls, edibles, topicals, and other compatible products.

Glass packaging can provide:

• A rigid package structure
• Clear product visibility
• A premium retail presentation
• Compatibility with labels, direct printing, coatings, and paperboard packaging
• Multiple jar, tube, and multipack formats
• Standard or high-content recycled-glass constructions

The glass container is only one part of the packaging system. Product protection, child resistance, tamper evidence, odor and moisture control, shelf life, and regulatory compliance also depend on the closure, liner, seal, filling process, storage conditions, and complete configuration.

Both are rigid, nonporous glass packaging materials. The primary difference is the percentage of recycled glass used during manufacturing.

Sana Packaging’s standard glass products typically contain approximately 25% to 30% recycled glass.

The current 2oz, 3oz, and 4oz recycled glass jars are made from soda-lime glass containing approximately 50% to 70% recycled glass. This is considered high-content recycled glass.

High-content recycled glass is not a lower-grade material. It uses a greater proportion of recovered glass feedstock while providing the rigid construction and clear appearance associated with glass packaging.

Use documentation for the exact product when making a recycled-content claim.

Yes. Standard glass commonly contains recycled glass even when the product is not marketed as high-content recycled glass.

Recycled glass feedstock is called cullet. Cullet is recovered glass that has been cleaned, sorted, crushed, and prepared for use in glass production.

The exact percentage and source of the recycled content can vary by product, supplier, and production run. Request current documentation for the exact product before stating a percentage.

Not necessarily.

Recycled glass cullet may come from:

• Post-consumer glass containers
• Manufacturing scrap
• Other recovered glass sources
• A combination of recovered feedstocks

A general recycled-glass percentage does not automatically establish how much of the material is post-consumer recycled content.

Do not use “PCR glass” and “recycled glass” interchangeably unless documentation confirms the post-consumer source and percentage for the exact product.

For broader guidance on recycled-content terminology, explore the Post-Consumer Recycled Materials FAQ.

High-content recycled glass uses a greater proportion of recovered glass feedstock than standard glass.

It can support packaging projects seeking:

• Higher documented recycled content
• A rigid glass package
• Clear product visibility
• A premium retail presentation
• Compatibility with child-resistant closures
• Labeling, printing, and paperboard customization options

Recycled content is one material attribute. The overall impact and end-of-life pathway of a package also depend on its weight, manufacturing, transportation, breakage, reuse, added components, and the availability of local recovery programs.

High-content recycled glass can provide performance comparable to standard glass, but appearance and tolerances remain product-specific.

Recovered glass feedstock may create subtle variations in:

• Color
• Tone
• Surface appearance
• Wall thickness
• Weight
• Dimensions
• Capacity

It does not necessarily make the package cloudy, green, or visibly recycled. Sana Packaging’s current high-content recycled glass jars are clear.

Request samples when clarity, color matching, wall thickness, fill volume, closure performance, labeling, or decoration quality is important.

Current glass packaging options include:

• 1oz standard glass jars with 38-400 neck finishes
• 2oz, 3oz, and 4oz high-content recycled glass jars with 53-400 neck finishes
• 9ml glass concentrate jars with 38-400 neck finishes
• 90mm glass pre-roll multipack jars with 38-400 neck finishes
• 115mm glass pre-roll tubes with specified 22mm screw-top closures
• 120mm glass pre-roll tubes with 20mm natural T-cork caps

Colors, finishes, capacities, closures, liners, quantities, customization options, and inventory vary by product.

To compare current formats, explore Cannabis Jars & Lids, Pre-Roll Tubes, and Pre-Roll Multipacks.

Choose the package based on the complete product rather than only its nominal weight or volume.

Common starting points include:

• Approximately 0.5g to 1g of cannabis flower: 1oz Glass Jar
• Up to approximately 3.5g of cannabis flower: 2oz or 3oz Recycled Glass Jar
• Up to approximately 7g of cannabis flower: 4oz Recycled Glass Jar
• Approximately 0.5g to 1g of cannabis concentrate: 9ml Glass Concentrate Jar
• Up to ten 84mm pre-rolls or twelve 70mm mini pre-rolls: 90mm Glass Jar Pre-Roll Multipack
• King-size pre-rolls and blunts: 115mm or 120mm Glass Pre-Roll Tube
• Compatible edibles or topicals: 1oz to 4oz glass jar selected according to product volume, density, formulation, and desired headspace

Package fit can depend on:

• Product dimensions
• Product density or consistency
• Target net weight or unit count
• Desired headspace
• Package taper
• Closure depth
• Liner or seal
• Filling process
• Manufacturing tolerances

Request samples and test the actual product with the complete packaging configuration before production.

Closure compatibility depends on the neck finish and complete package configuration.

Current pairings include:

• 38-400 closures for the 1oz Glass Jar, 9ml Glass Concentrate Jar, and 90mm Glass Jar Pre-Roll Multipack
• 53-400 closures for the 2oz, 3oz, and 4oz Recycled Glass Jars
• Specified 22mm screw-top closures for the 115mm Glass Pre-Roll Tube
• 20mm natural T-cork caps for the 120mm Glass Pre-Roll Tube

The current 38-400 Ocean Screw-Top Lid includes a pre-inserted Esterfoil liner. The current 53-400 Ocean Screw-Top Lid includes a pre-inserted pressure-sensitive liner.

A matching neck-finish designation is important, but it does not guarantee that components from different suppliers are interchangeable.

Test the exact container, closure, liner, seal, filling process, and intended product before production.

Not every glass package uses the same closure material.

Current screw-top glass jars and select tubes use compatible plastic closures. The 120mm Glass Pre-Roll Tube uses a natural T-cork cap.

A glass container should not automatically be described as plastic-free. The complete package may include plastic in:

• Closures
• Liners
• Seals
• Labels
• Adhesives
• Tamper-evident components
• Inserts
• Outer packaging

Review every component before making a material claim about the finished packaging system.

Select glass packaging configurations are child-resistant, but glass is not child-resistant on its own.

Current child-resistant configurations include:

• 1oz Glass Jars paired with compatible 38-400 child-resistant lids
• 9ml Glass Concentrate Jars paired with compatible 38-400 child-resistant lids
• 90mm Glass Jar Pre-Roll Multipacks paired with compatible 38-400 child-resistant lids
• 2oz, 3oz, and 4oz Recycled Glass Jars paired with compatible 53-400 child-resistant lids
• 115mm Glass Pre-Roll Tubes paired with their specified 22mm screw-top closures

The 120mm Glass Pre-Roll Tube with its 20mm natural T-cork cap is not child-resistant.

Child resistance applies to the tested package design, dimensions, closure, liner, opening mechanism, and complete configuration. Changing a tested component may affect certification or require additional testing.

Child-resistant does not mean child-proof. Request current certification documentation and confirm the requirements in every market where the finished product will be sold.

Sana Packaging offers food-grade and FDA-compliant glass packaging for applicable product-contact uses.

Food-contact suitability can depend on:

• The exact container
• Closure and liner
• Seal
• Intended contents
• Contact time
• Filling temperature
• Storage conditions
• Transportation conditions
• Inks, labels, coatings, and adhesives

Request current documentation for the exact container, closure, liner, production configuration, and intended use.

FDA-compliant does not mean FDA-approved. Food-contact suitability also does not establish child resistance, tamper evidence, shelf life, or compliance with cannabis packaging regulations.

A glass container is not inherently tamper-evident.

Compatible tamper-evident options can include:

• Perforated Stone Paper Tamper Bands
• Tamper-evident labels or stickers
• Liners or inner seals
• Sealed paperboard outer packaging
• Other product-specific seals or closures

The correct method depends on the container, closure, liner, product, filling process, retail configuration, and applicable regulations.

Child resistance and tamper evidence are separate packaging functions. A child-resistant closure is not automatically tamper-evident, and a tamper-evident component does not make a non-child-resistant package child-resistant.

Glass is nonporous, but the performance of the complete package depends on:

• Container dimensions and tolerances
• Closure
• Liner or sealing system
• Applied torque
• Fill level
• Product formulation
• Filling process
• Storage and transportation conditions
• Repeated opening and closing

An appropriate closure and liner may help control odor and moisture.

Do not assume that every glass package is fully airtight, odor-proof, smell-proof, moisture-proof, waterproof, or leakproof.

Test the complete filled package under realistic conditions before making performance or shelf-life claims.

Clear glass provides product visibility but does not provide meaningful opacity or complete protection from light exposure.

Labels, coatings, colored finishes, or paperboard outer packaging may provide additional light protection. Performance must be evaluated for the exact package and product.

Glass can also be affected by thermal shock. Do not assume a container is suitable for:

• Hot filling
• Freezing
• Rapid temperature changes
• High-temperature processing
• Another specialized filling or storage condition

Confirm the product specification and test the complete package before using it under specialized temperature conditions.

Glass jars and tubes are recyclable where accepted.

Local acceptance can depend on:

• Package size and shape
• Glass color
• Labels, inks, coatings, and adhesives
• Closures and liners
• Seals and tamper-evident components
• Residual cannabis product
• Available glass-processing infrastructure

Before placing glass packaging in a recycling program:

1. Confirm that the program accepts the package format and color.
2. Empty the package and remove product residue.
3. Rinse the container when required.
4. Separate closures, liners, labels, tamper bands, and other components when instructed.
5. Place each component only in a program that accepts its material.

Do not place broken glass in a curbside recycling bin unless the receiving program expressly permits it.

For broader end-of-life guidance, explore Sustainability.

Glass containers may be suitable for reuse because the material is rigid and nonporous. However, a single-use package should not automatically be treated as a validated refillable package.

A reuse program can require:

• Collection
• Inspection
• Cleaning
• Sanitization
• Drying
• Quality control
• Product compatibility testing
• Closure and liner replacement
• Child-resistance evaluation
• Regulatory review

Containers with chips, cracks, damaged threads, coatings, or persistent residue should not be reused.

Closures, liners, tamper-evident features, and child-resistant performance must also be evaluated for every reuse cycle.

No. Glass is not biodegradable or compostable.

Glass is an inorganic material that does not break down through biological activity. Its potential end-of-life pathways are reuse or glass recycling where an appropriate program accepts the complete package.

Recycled content, recyclability, biodegradability, and compostability are separate attributes. One claim does not establish the others.

Do not place glass packaging in a composting program.

Yes. Glass is rigid, but it can chip, crack, or break when dropped, struck, improperly packed, exposed to excessive force, or subjected to rapid temperature changes.

Evaluate:

• Filling and capping equipment
• Conveyor transfers
• Container and closure tolerances
• Case dividers and cushioning
• Case-pack configuration
• Pallet pattern and load stability
• Parcel or freight handling
• Storage temperature
• Customer opening and use

Inspect deliveries promptly. If a shipment arrives damaged, document the affected cases and pallets and note visible freight damage on the delivery receipt or bill of lading before the carrier leaves.

Yes. Customization options can include:

• Pressure-sensitive labels
• Label printing and application
• Direct printing on eligible glass products
• Digital printing on eligible screw-top lids
• Customizable Stone Paper Tamper Bands
• Custom coatings or colors for qualifying projects
• Paperboard boxes and inserts
• Compliance and product-information labeling

Labels can support multiple designs and lower quantities than some direct-print or custom-color projects.

Direct printing creates an integrated appearance without a separate adhesive label but is limited to eligible products, print areas, artwork, quantities, and production methods.

Use the current artwork template for the exact package and customization method. Labels, inks, coatings, and adhesives may affect recycling preparation and local acceptance.

For additional artwork, proofing, and production guidance, explore the Printing & Labeling FAQ.

Samples are available for current glass products and compatible closures.

Use samples to evaluate:

• Product fit and target capacity
• Desired headspace
• Closure and liner compatibility
• Child-resistant operation
• Tamper-evident components
• Odor, moisture, leakage, and light performance
• Product-to-package compatibility
• Label or print area
• Filling and labeling equipment
• Storage and transportation
• Retail presentation and customer experience

Blank, in-stock glass packaging generally ships the next business day.

Quantities vary by product. Some glass products are sold by the case, while the current 2oz, 3oz, and 4oz high-content recycled glass jars are sold by the pallet.

Custom production timing depends on the product, quantity, artwork status, printing or decoration method, number of designs, proof revisions, production capacity, shipping, and freight.

Confirm current inventory, quantities, pricing, samples, customization requirements, shipping, freight, and lead times for the exact product before ordering.

Available documentation may include:

• Glass material specifications
• Recycled-content documentation
• Container and closure drawings
• Closure and liner specifications
• Food-contact or FDA-compliance documentation
• Child-resistant certification for applicable configurations
• Label and direct-print templates
• Product-specific testing or compliance documentation

Use claims supported by current documentation for the exact product and complete configuration.

Appropriate language may include:

• “Standard glass containing approximately 25% to 30% recycled glass,” when supported
• “High-content recycled glass”
• “Made with approximately 50% to 70% recycled glass,” when supported for the exact product
• “Recyclable where accepted”
• “Food-grade and FDA-compliant,” when supported
• “Child-resistant when paired with the specified closure,” when supported by current certification

Avoid claims such as:

• “100% recycled glass”
• “PCR glass,” unless the post-consumer source and percentage are documented
• “Infinitely recyclable”
• “Recyclable everywhere”
• “Zero waste”
• “Unbreakable”
• “Airtight”
• “Odor-proof”
• “Smell-proof”
• “Plastic-free”

Final product compatibility testing, package testing, shelf-life testing, environmental claims, labeling review, and regulatory review remain the responsibility of the brand placing the finished product on the market.

To shop current glass packaging, explore the Glass Packaging collection, Cannabis Jars & Lids, Pre-Roll Tubes, and Pre-Roll Multipacks.

For broader material and end-of-life guidance, explore Sustainability. You can also return to the Frequently Asked Questions hub.

Related guides: How to Build Custom Cannabis Concentrate Packaging; How to Compare Cannabis Packaging Materials.