Disclaimer regarding limitations on use for internal research: Any restrictions on the use of the product by the purchaser solely for internal research shall not apply with respect to this disclaimer Products on web page. †The term "leak-proof" applies to Thermo Scientific Nalgene products that meet the following conditions: a) Bottle/flask/funnel lid systems with lid sizes less than 100 mm, when filled with water, inverted for 2 minutes at 2 psig atmospheric pressure, internal The water will not seep out; b) For bottle/funnel/flask cover systems with cap sizes greater than 100mm, when filled with water and inverted for 15 minutes, the water inside will not seep out. Note: If other liquids are used for the above test, different results may be obtained. To ensure safe use, customers are advised to test Thermo Scientific Nalgene bottles and closures under planned application conditions. Thermo Scientific Nalgene products are leak-proof when used with Nalgene sealing caps at room temperature and pressure.