Glass Vacuum Chamber, Vacuum Degassing Chamber, 250mL/500mL/800mL Storage Tanks, with Vacuum Gauge, Good Sealing, for Lab Sample Preservation

Product Specifications: - Model with negative pressure gauge: Includes negative pressure monitoring gauge, supports -0.1MPa negative pressure, maintains pressure ≤-0.06MPa for 72 hours, equipped with straight-handle needle valve switch (vacuum pump required). - Compatible Equipment: Can only be filled with an air pump (inlet only, no air inlet, cannot be filled into the canister). Material: Glass 800ml: Inner diameter 87mm / Outer diameter 114mm 500ml: Inner diameter 65mm / Outer diameter 100mm 250ml: Inner diameter 65mm / Outer diameter 95mm Package includes: Main unit *1

• 【Precise Negative Pressure Monitoring】：Equipped with a clear, intuitive dial vacuum gauge, it can reach a high negative pressure of -0.1MPa. Its excellent pressure maintenance performance keeps the pressure stably below -0.06MPa for up to 72 hours, providing a reliable environment for sample storage.
• 【Easy Operation & Leak-Proof Design】：Adopts a straight-handle needle valve switch for precise gas flow rate adjustment, and the valve has excellent sealing performance to effectively prevent air leakage. The compact vacuum container is easy to carry.
• 【3 Flexible Capacities with Safe Glass Construction】：Available in 3 capacities: 250mL, 500mL, and 800mL, you can flexibly select the right size according to the volume of your oxidation-sensitive samples. Made of high-quality glass, the container is safe for storing various oxidation-sensitive samples.
• 【Safety-Optimized Structural Design】：The storage container is specially designed for gas pump air extraction, with only one intake valve interface (no air inlet). Important: Do not fill the container with gas to ensure safe use.
• 【Applicable Scenarios & Critical Safety Guidelines】：Designed for storing or carrying oxidation-sensitive samples. To ensure safe use, strictly follow these rules: Do not pressurize the container, do not add liquids into it, do not heat it, and do not freeze or refrigerate it.