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 have 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 days after 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 us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.