100PCS Circular Qualitative Filter Paper 7cm 9cm 11cm 12.5cm 15cm 18cm Fast Medium Slow Flow Laboratory Filtration Paper for Liquid Clarification Sample Preparation (Slow Flow 15cm)

Circular Qualitative Filter Paper is designed for routine laboratory filtration, liquid clarification, sample preparation, and general particle separation applications. The filter paper is available in 7cm, 9cm, 11cm, 12.5cm, 15cm, and 18cm diameters, with fast, medium, and slow flow options to accommodate different laboratory procedures. Its circular shape fits compatible laboratory funnels and can also be folded as needed for gravity filtration. Suitable for general chemistry experiments, classroom demonstrations, workshop liquid filtration, oil spot observation, and other routine filtration tasks. Each box contains 100 circular filter paper sheets. Please select the required diameter and flow speed before ordering.

• Multiple Diameter Options: Available in 7cm, 9cm, 11cm, 12.5cm, 15cm and 18cm sizes for use with different compatible funnels and filtration setups.
• Three Flow Speed Choices: Choose fast, medium or slow flow according to the liquid, particle size and filtration procedure. Specific filtration performance varies by selected option.
• Circular Filter Design: Pre-cut round shape can be placed directly into compatible funnels or folded for common gravity filtration arrangements.
• General-Purpose Applications: Suitable for liquid clarification, particle separation, sample preparation, chemistry demonstrations, workshop filtration and oil spot observation.