Usage Tips:90mm Petri Dish 50 pcs Glass Petri Dishes with Lids Laboratory Culture DishDisposable Plastic Petri Dish 90mm (12g)Application: A special glass material with low expansion, corrosion resistance, high temperature resistance, firmness, hardness, transparency and chemical stability. Widely used in plant material culture, microbial culture and animal cell fixation.Size options: 90mm optional. Each item includes 5 petri dishes of the same size. The top cover acts as a dust cover. The bottom dish is flat, the top lid fits, and the finish is neat, flat and smooth.Why choose us: Unlike disposable plastic petri dishes which can only withstand maximum temperature than 80C, Huanyu Glass Petri Dishes he a higher temperature resistance of 400C. Better corrosion resistance to more chemicals. For laboratory personnel, they are easier to clean and handle. They can be reused for many times, more environmentally friendly and more economical.Packaging method: Huanyus packaging department has accumulated global sales experience, thoroughly considering geographical factors and of transportation, and formed its own unique and professional packing method. Before packaging, our staff checks for scratches, burrs and manufacturing defects. It removes defective items and selects only better quality items. Our proprietary packaging method helps minimize damage in transit.About Shipping: All items will be shipped within 3 business dayster the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact usDuring the shopping process, if you he any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shoppingThanks for your cooperation and we"ll make you feel satisfied.When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we he provided detailed information about the product, including its features and specificationsWe want you to be completely satisfied with your purchase, so if you he any questions or concerns, please don""""""""t hesitate to contact us. We are here to help and will do our best to assist you.Thank you for choosing our product. We hope you enjoy it"