Specifications Table

Product Name – Whatman Cellulose Filter Paper Grade 602H
Quantity/Pack Size – 125mm (Pack of 100), 150mm (Pack of 100), 185mm (Pack of 100), 240mm (Pack of 100)
Form – Circular sheets
Grade – 602H (Medium retention, fast flow)
Application – General lab filtration, qualitative analysis

Product Overview

Whatman Grade 602H cellulose filter paper is engineered for reliable performance in laboratory filtration applications requiring a balance between flow rate and particle retention. This medium-retention grade features a smooth surface and uniform porosity, ensuring consistent filtration results across diverse sample types. The acid-washed treatment enhances purity by removing trace metals and contaminants, making it particularly suitable for sensitive analytical procedures. With a nominal thickness of 180mm and a basis weight of 85g/mm, this filter paper maintains structural integrity even under moderate pressure differentials. The fast flow rate (Herzberg: ~25s) facilitates efficient processing of aqueous and organic solutions while retaining particles down to approximately 3?m. Its compatibility with common laboratory solvents and resistance to most acids/bases (pH 0-12) extends its utility across various protocols. The cellulose composition provides natural hydrophilicity without requiring pre-wetting, and the white color allows for easy visual inspection of filtrates. Each pack contains precision-cut circular sheets with clean edges to prevent fiber shedding during handling.

FAQs

1. What is the maximum operating temperature for Whatman Grade 602H filter paper?

This cellulose filter paper can withstand continuous operation up to 120C in dry conditions, though prolonged exposure to temperatures above 100C may affect structural integrity.

2. Can this filter paper be used with viscous liquids?

The fast flow rate makes it suitable for low-to-medium viscosity solutions, but highly viscous liquids may require pre-filtration or extended processing times.

3. How does Grade 602H compare to Grade 1 in terms of retention?

Grade 602H offers faster flow with slightly lower retention (3mm vs 11mm for Grade 1), making it better for applications where speed is prioritized over fine particle capture.

4. What storage conditions are recommended to maintain filter paper quality?

Store in original packaging at room temperature (15-30C) with relative humidity below 60% to prevent moisture absorption and potential microbial growth.

5. Is this filter paper compatible with autoclave sterilization?

While cellulose can withstand autoclaving at 121C, repeated sterilization cycles may degrade the paper’s structure and filtration performance over time.