These bottles are versatile. You can use them to store liquids, lab samples, process materials, small samples, spices, essential oils, or other substances. Whether in the lab, classroom, or home, they can effectively and safely meet a variety of storage needs.Specification:Material: PPColor: ClearCapacity: 30mlMouth Inner Diameter: 21mm / 0.83 InchOverall Size: 33.5 x 61.5mm / 1.32 x 2.42 Inch ( OD * H )Packing List: 6Pcs x Plastic Sample Bottles, 24 x LabelsAdvantage:The sample bottles are made of PP material, which is sturdy and durable. These sample bottles can withstand temperatures from -4°F to 248°F (-20°C to 120°C) and have excellent acid, alkali, and high temperature resistance.Each bottle is equipped with a secure screw cap to prevent leakage and spillage, ensuring that your liquid is protected and can be used with confidence.