Each dish has three sets of parallel sliding clasp, compare with standard dish, you don't need to worry about the lid orbottom falling off if you don't hold it properly.
Product Details:
• Locking Lid
• Single Compartment
• Vented design
• Raised Rings on Lids for Stable Stacking
Quality You Can Rely On:
• USP grade VI virgin polystyrene
• Sterilized by E-beam, SAL=10-6
• Produced in ISO 13485:2016 and ISO 9001 facility
• Molded and packed in ISO 7 cleanroom
• Lot tested free DNase/RNase and DNA
• Lot tested free BSE/TSE
• Certified free of animal products