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Safety Vacuum Receiver Adapters, for 3 or 4 Small Flasks, with ASTM & DIN Joints with Detachable GL14 PP Screw Connector Kit-Tube od Φ8mm, 140℃내열 / 내약품성 Safety Vacuum Receiver Adapters, for 3 or 4 Small Flasks, with ASTM & DIN Joints with Detachable GL14 PP Screw Connector Kit-Tube od Φ8mm, 140℃내열 / 내약품성 Safety Vacuum Receiver Adapters, for 3 or 4 Small Flasks, with ASTM & DIN Joints with Detachable GL14 PP Screw Connector Kit-Tube od Φ8mm, 140℃내열 / 내약품성