Specifications Table

Product Name – Whatman Polydisc Filter HD
Quantity/Pack Size – 50 (5.0uM), 50 (10.0uM), 10 (5.0uM, DPPP), 10 (10.0uM, DPPP)
Form – Circular Disc
Grade – HD (High Density)
Application – Sterile Filtration, Solvent Clarification, HPLC Sample Preparation

Product Overview

The Whatman Polydisc HD filter is engineered for high-performance filtration in demanding laboratory applications. Constructed from durable polypropylene, these filters provide exceptional chemical resistance and mechanical strength, ensuring reliable particle retention without fiber shedding. The 5.0?m and 10.0?m pore sizes cater to diverse filtration needs, from coarse particulate removal to fine clarification of solvents and biological samples. The high-density structure minimizes extractables, making them suitable for sensitive analytical techniques like HPLC and GC. Each disc is designed for compatibility with standard filtration apparatus, offering seamless integration into existing workflows. The DPPP (Double-Polypropylene) variant enhances robustness for aggressive solvents, while the non-DPPP version balances efficiency and cost-effectiveness. Whether used for routine lab tasks or specialized research, these filters deliver consistent, reproducible results with minimal maintenance. Their sterile packaging ensures readiness for critical applications, reducing preparation time and contamination risks. The uniform pore distribution guarantees even flow rates, optimizing filtration speed without compromising retention efficiency. Ideal for researchers and technicians seeking precision, these filters combine Whatman?s legacy of quality with modern engineering for unmatched performance in academic and industrial laboratories.

FAQs

1. What is the maximum pressure rating for Whatman Polydisc HD filters?

These filters are rated for differential pressures up to 4.1 bar (60 psi) at 20?C, ensuring reliable performance under standard lab conditions.

2. Can these filters be autoclaved for sterilization?

Yes, the polypropylene construction allows autoclaving at 121?C for 30 minutes without compromising structural integrity or filtration efficiency.

3. Are there alternatives to the DPPP version for less aggressive solvents?

The standard Polydisc HD (non-DPPP) variant is suitable for aqueous solutions and mild organic solvents, offering cost savings where extreme chemical resistance isn?t required.

4. How should unused filters be stored to maintain performance?

Store in original packaging at room temperature (15?30?C) away from direct sunlight and moisture to prevent premature degradation or contamination.

5. What?s the typical flow rate for a 10.0?m Polydisc HD filter?

Flow rates vary by application, but under standard conditions (water at 20?C), expect approximately 50?70 mL/min/cm? at 1 bar differential pressure.