The 250 mL square media bottle is a compact, space-efficient container for preparing, storing and sampling culture media, serum, buffers, process solutions and compatible laboratory reagents. Its clear PET or PETG body supports visual inspection, while the flat-sided profile improves handling and shelf organization. A white screw-cap closure provides a practical format for routine laboratory and bioprocess workflows.
| Option | Selection considerations |
|---|---|
| PET | Clear, lightweight and economical for compatible media, buffer and reagent storage workflows. |
| PETG | Selected when greater clarity, toughness or broader chemical-resistance performance is preferred for the validated workflow. |
PET and PETG are separate configurations and are not automatically interchangeable. Confirm chemical compatibility, temperature range, sterility status and required documentation for the selected SKU.
| Nominal capacity | 250 mL |
|---|---|
| Bottle profile | Square, clear, flat-sided |
| Material | PET or PETG |
| Neck diameter | 35.4 mm |
| Height without cap | 140 mm |
| Height with cap | 144 mm |
| Closure | White screw cap; final liner and seal configuration confirmed by SKU |
| Graduations | Molded graduations where indicated for the selected capacity; for reference only, not volumetric measurement |
| Sterility and cleanliness | Configuration dependent; confirm irradiation status, sterility assurance documentation, non-pyrogenic status and DNase/RNase claims before order |
| Temperature guidance | Product-family reference down to −70 °C; validate the actual liquid, fill volume, closure and freeze/thaw protocol |
| Heating | Not designed as a heating vessel; do not autoclave |
| Product number | Material | Volume | Neck diameter | Height without cap | Height with cap | pcs/pack | pcs/case |
|---|---|---|---|---|---|---|---|
| PET250 | PET | 250 mL | 35.4 mm | 140 mm | 144 mm | 56 | 224 |
| PETG250 | PETG | 250 mL | 35.4 mm | 140 mm | 144 mm | 30 | 60 |
Dimensions are nominal. Packing quantities are reference configurations and should be reconfirmed on the final quotation.
Production environment, irradiation method, sterility status, non-pyrogenic claim, DNase/RNase status and animal-origin statements are configuration dependent. Puretest will confirm the applicable specification and available quality documents for the selected product number before order.
When requesting a quotation, specify the required capacity, PET or PETG material, liquid type, storage temperature, sterile or non-sterile format, closure requirement, pack quantity and documentation needs. If the bottle will be frozen, shipped or used with a sensitive reagent, include the complete workflow for compatibility review.
No. This product uses a compact square profile with rounded corners. The front view of the smaller 5 mL and 10 mL sizes can appear cylindrical, but they belong to the square media-bottle series.
No. PET and PETG media bottles are not intended for autoclaving or use as heating vessels.
No. Molded graduations are visual reference marks only. Use calibrated volumetric equipment when an accurate volume is required.
These claims depend on the selected configuration. Confirm irradiation status, sterility assurance and cleanliness documentation on the quotation and lot documents.
The product family is referenced for low-temperature use down to −70 °C, but the complete application—including liquid, fill volume, cap, freezing rate and thawing method—must be validated by the customer.
Provide capacity, material, liquid type, storage temperature, sterile status, pack format, annual demand and required certificates.
Send Puretest your application, required capacity and material, storage conditions, documentation requirements and expected order volume. Our team will confirm the matching SKU and packing configuration before quotation.
General Inquiries
Hangzhou Puretest Biotech Co., Ltd. is an innovative company.
Tell us the product, specifications and quantity you need. We’ll reply by email with the next steps.
