Cell Culture Flask

PEKYBIO's cell culture flasks are designed to support optimal cell attachment, growth, and proliferation under controlled conditions. Manufactured from high-clarity, medical-grade polystyrene (PS), these flasks are available with either vent caps for gas exchange or seal caps for closed culture environments, providing flexibility for diverse research needs.
 

 

Q: What is the difference between sterile and non-sterile syringe filters?

A syringe filter is a device used to purify a fluid before it is injected into a patient or used in a laboratory experiment. The two main types of syringe filters are sterile and non-sterile.

Non-sterile syringe filters are used to filter out particulates in fluids, and typically have a larger pore size than sterile syringe filters. Non-sterile filters generally have a larger area of contact between the filter and the fluid, which allows for a higher flow rate. Non-sterile filters are typically used for general filtration applications and are not used for medical or laboratory applications. Non-sterile filters can also be used for cell culture applications.

Sterile syringe filters are used for medical and laboratory applications, and are designed to filter out bacteria, viruses, and other microorganisms. They have a much smaller pore size than non-sterile filters, and the filter material is specially treated to ensure that it will not support microbial growth. Sterile filters are typically used in medical and laboratory applications that require the highest levels of purity, such as hemodialysis, intravenous drug delivery, and cell culture applications.

In summary, the main difference between sterile and non-sterile syringe filters is the pore size of the filter media and the level of purity that is required. Non-sterile syringe filters are typically used for general filtration applications and have a larger pore size, while sterile syringe filters are designed to filter out bacteria, viruses, and other microorganisms, and are used for medical and laboratory applications that require the highest levels of purity.

Q: What are the characteristics of these materials?
PTFE (polytetrafluoroethylene) syringe filters are made of a microporous membrane and are suitable for a wide range of applications, including filtration of aggressive chemicals, solvents, oils, and acids. They are also suitable for sterilizing and removing particles from aqueous solutions. PTFE syringe filters are generally more expensive than other membranes due to their superior chemical compatibility and superior filtration efficiency.

PVDF (polyvinylidene fluoride) syringe filters are made of a microporous membrane and are suitable for a wide range of applications, including the removal of organic contaminants, bacteria, and other particles from aqueous solutions. They are also approved for use in USP <788> Sterile Filtration and are particularly useful in aqueous solutions with a high viscosity.

Nylon syringe filters are made of a synthetic material and are suitable for a wide range of applications, including sterilizing and removing particles from aqueous solutions. They are also compatible with a wide range of chemicals and are resistant to many acids, bases, and organic solvents. Nylon syringe filters are generally less expensive than other membrane materials and are therefore a popular choice for laboratories on a budget.

PES (polyethersulfone) sterile syringe filters are made of a microporous membrane and are suitable for a wide range of applications, including sterilizing and removing particles from aqueous solutions. They are also resistant to a wide range of chemicals and are compatible with sterilization techniques such as autoclaving and gamma irradiation. PES syringe filters are generally more expensive than other membranes due to their superior filtration efficiency, but they are often the preferred choice for critical applications due to their high levels of reliability.