Petri Dishes: A Comprehensive Guide for Buyers in 2025


Petri dishes are essential tools in laboratories for culturing microorganisms and cells. Whether you're a researcher, educator, or medical professional, understanding the different types, features, and sourcing options is crucial. This guide will help you make informed decisions when purchasing Petri dishes, especially from reliable suppliers in China.


How to Find Reliable Petri Dishes from China in 2025


China is a leading manufacturer of laboratory equipment, including high-quality Petri dishes. To find reliable suppliers, consider the following:

  • Check certifications like ISO 13485 or CE marks to ensure product quality.
  • Read customer reviews and testimonials on platforms like Alibaba.
  • Request samples to test the durability and sterility of the dishes.
  • Verify the supplier's production capacity and lead times.

What Buyers Should Know Before Buying Petri Dishes from China


Before placing an order, buyers should be aware of:

  • Material options: Polystyrene (PS) and glass are common, each with pros and cons.
  • Sterility: Ensure the dishes are pre-sterilized if needed for your application.
  • Packaging: Proper packaging prevents contamination during shipping.
  • Minimum order quantities (MOQs): Negotiate MOQs to fit your needs.

Types of Petri Dishes


There are several types of Petri dishes available:

  • Standard Petri Dishes: Used for general microbial cultures.
  • Vented Petri Dishes: Feature lids with small holes for gas exchange.
  • Stackable Petri Dishes: Designed to save space in incubators.
  • Glass Petri Dishes: Reusable and autoclavable, ideal for high-temperature applications.

Functions and Features of Petri Dishes


Petri dishes serve multiple functions in laboratories:

  • Microbial culture and isolation.
  • Cell culture and tissue studies.
  • Environmental monitoring.
  • Educational demonstrations.

Key features to look for include clarity for easy observation, durability, and compatibility with autoclaving.


Scenarios of Petri Dishes


Petri dishes are used in various settings:

  • Research Labs: For studying bacteria, fungi, and other microorganisms.
  • Hospitals: In microbiology labs for diagnosing infections.
  • Schools: For teaching basic biology concepts.
  • Food Industry: To test food samples for contamination.

How to Choose Petri Dishes


Selecting the right Petri dishes depends on your needs:

  • Material: PS is disposable and cost-effective; glass is reusable but fragile.
  • Size: Common sizes are 60mm, 90mm, and 100mm in diameter.
  • Sterility: Pre-sterilized dishes save time but cost more.
  • Supplier Reputation: Choose suppliers with proven track records.

Petri Dishes Q & A


Q: Are plastic Petri dishes reusable?
A: Most plastic dishes are designed for single use, but some can be sterilized and reused a limited number of times.


Q: What is the shelf life of pre-sterilized Petri dishes?
A: Typically 6-12 months if stored properly in a dry, cool place.


Q: Can I autoclave polystyrene Petri dishes?
A: No, PS dishes will melt. Use glass dishes for autoclaving.


Q: How do I prevent condensation in Petri dishes?
A: Store them upside down after pouring agar to prevent condensation on the lid.


Q: What’s the difference between vented and non-vented lids?
A: Vented lids allow gas exchange, which is crucial for aerobic cultures.