This Glass Sand Core Filter Device Accessory is designed for laboratory solvent filtration, vacuum filtration setup, sample preparation, and general filtration work. It is available in 300ml and 500ml filter cup options, making it suitable for different routine laboratory volume needs. The glass cartridge and sand core filter structure support practical filtration operation with compatible laboratory filtration devices. The clear glass body allows easy observation of the liquid level and filtration process during use. This product is suitable for school laboratories, research labs, testing facilities, and professional laboratory environments where glass filtration accessories are required.