68W731 is the clear 125 ml Corning® polyethylene terephthalate (PET) plastic octagonal media bottle with screw cap that can be used for sampling and storing media, biologicals, and other types of aqueous solutions. This lightweight and break-resistant bottle has been sterilized to SAL 10-6, making it suitable for immediate use. The screw cap is tamper-evident and prevents unnecessary contamination. Media bottles are commonly used in laboratories.

Key benefits:
  • Applicable with weak acids
  • Disposable bottle
  • Molded graduations for precise measurements
  • 31.7 mm HDPE tamper-evident screw cap minimizes contamination, leakproof
  • Maximum working temperature: 50° C
  • Minimum working temperature: -40° C
  • Maximum storage temperature: 50° C
  • Thermal durability: 50° C
  • High shatter resistance level and good pH stability
  • USP class VI compliant bottles are noncytoxic, nonhemolytic, and certified nonpyrogenic
*Temperatures noted above are recommendations. Bottle performance may vary in the freezer due to the temperature and contents inside. A trail run is recommended.


Polyethylene Terephthalate PlasticPolyethylene Terephthalate (PET or PETE) is a clear material that has good impact strength, excellent chemical resistance and a high scratch resistance level. PET is known for being strong and lightweight. Our clear packer bottles can withstand high impact for short periods of time and can be widely found in the pharmaceutical sector. Polyethylene terephthalate is also commonly used in food and beverage bottles. PET can handle cold temperatures at about -40°F and is not suitable for hot fill applications. Fill temperature should not exceed 176°F. Discover if there are conditions under which PET is appropriate for hot fill application by learning more about What Is Hot Fill Packaging and how it applies to PET containers.


This information has been provided as a general guide. It is the customer's responsibility to select the proper container for product and application compatibility.

Additional Information

More Information
Capacity125 ml
Neck Width31.7 mm
Label Panel Dimensions1" W x 2" H (side panel)
Unit Pack24 ea. (Shrink Wrapped)
Case Pack48 ea. (2 Units)
Case Weight4.7 lbs.
Pallet Pack2,496 ea. (52 Cases)
Pallet Weight244.4 lbs. (+60 lbs. per pallet)
Pallet Dimensions48" x 40"
IndustriesLab & Science
Graduation Range25-125 ml
Graduation Interval25 ml
Q & A
Customer Questions
Can this PET plastic container be used for hot fill products?
PET is generally not suitable for hot fill applications. Fill temperature should not exceed 120° F (49° C). However, some PET containers can be treated to make the plastic more resistant to heat. We recommend requesting a sample of the container first to see if it’s compatible with your product.
Is this PET container food grade?
When a container is FDA compliant, that indicates that it is safe for food contact and can be used to package food or drinks that are suitable for human consumption. If our product page indicates that a container is FDA Approved, then the container is considered food grade and can be used to package consumable food and drink products.
Is this PET container impact resistant?
PET has an excellent impact resistance due to its tough, rigid material. PET containers possess a high strength to weight ratio. However, PET containers can shatter at freezing temperatures.
Is this PET container chemical resistant?
Yes, PET containers have excellent chemical resistance to organic materials, water, as well as many acids. However, because PET containers cannot be fluorinated, they cannot endure stronger chemicals that may cause paneling. We recommend requesting a sample of the container first to see if it’s compatible with your product.
Can you ship internationally? Where are you located?
The Cary Company online ordering platform is only set up to ship within the United States. For international shipments, please contact us at 630.629.6600 or Sales@thecarycompany.com, and we will be happy to process your order. Our main warehouse and office are located in Addison, Ill. We also have warehouses in across the United States that you can see here. Thank you for choosing The Cary Company.
Do you offer labeling services?
Yes, we offer design services, as well as in-mold labeling, screen printing, label printing and application services. You can request a quote from our design team by calling 630.629.6600 or emailing Sales@TheCaryCompany.com. For more information regarding the services we offer, please go to our Design Services page. Thank you for choosing The Cary Company.
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