Whatman Hardened Low Ash Quantitative Filter Paper 2.7 µm Pack 100

Description

Product Overview

The Whatman Hardened Low Ash Quantitative Filter Paper is engineered for the most exacting laboratory filtration tasks. Featuring a 7.0 cm diameter and a 2.7 µm retention rating, this Grade 50 paper captures the finest crystalline precipitates while maintaining a consistent flow rate. The hardened, highly glazed surface eliminates loose fibers, ensuring that the filter itself never contaminates the sample. Its low‑ash composition reduces background interference, making it ideal for quantitative analyses where purity is paramount. The pack of 100 sheets provides ample supply for high‑throughput environments, and each sheet is dimensionally stable, resisting deformation even under repeated wet handling and scraping.

Usage

This filter paper excels in a wide range of laboratory applications. It is particularly suited for gravimetric analysis, precipitation reactions, and the removal of fine particulates from liquid samples. Researchers working in analytical chemistry, environmental testing, and pharmaceutical development will find the paper’s consistent retention and low ash content essential for achieving reproducible results. The glazed surface allows for gentle scraping of precipitates without tearing, facilitating easy recovery of solid residues. Because the paper tolerates wet handling, it can be used in both vacuum filtration setups and gravity‑driven filtration rigs, providing flexibility across different experimental protocols.

Why Choose Us

Choosing the Whatman Hardened Low Ash Quantitative Filter Paper means selecting a product backed by decades of scientific expertise and rigorous quality control. Each sheet undergoes strict dimensional testing to guarantee uniform thickness and pore size, ensuring that every filtration run delivers the same performance. The hardened surface is a result of a proprietary glazing process that locks fibers in place, preventing shedding and extending the usable life of each sheet. Our manufacturing facilities adhere to ISO‑9001 standards, and every batch is accompanied by a certificate of analysis that details ash content, retention, and dimensional tolerances. In addition, we provide responsive technical support to help you optimize filtration protocols and troubleshoot any issues that may arise during use.

Key Features

• Exceptional 2.7 µm retention captures the smallest precipitates for high‑precision results
• Hardened, glazed surface prevents fiber loss and allows easy scraping of solids
• Low‑ash composition minimizes background interference in quantitative assays
• Durable Grade 50 paper withstands repeated wet handling without tearing
• Responsive customer support and detailed certificates of analysis for every batch

FAQ

What types of samples can I filter with this paper?

The paper is suitable for aqueous solutions, organic solvents, and suspensions that require fine particulate removal. It works well for precipitation, gravimetric analysis, and any application where low ash content is critical.

Can the filter paper be reused after drying?

While the paper is designed for single‑use applications to ensure maximum accuracy, it can be gently dried and reused for non‑critical filtration steps if the integrity of the surface remains intact.

How does the hardened surface affect flow rate?

The glazed surface slightly reduces flow speed compared with non‑hardened papers, but this controlled flow improves particle capture and provides more consistent quantitative results.

Is the paper compatible with standard vacuum filtration equipment?

Yes, the 7 cm diameter fits standard Buchner funnel sizes and can be used with most laboratory vacuum filtration setups without modification.

What documentation is provided with the product?

Each pack includes a certificate of analysis detailing ash content, retention rating, dimensional tolerances, and batch number, ensuring traceability and quality assurance for regulated environments.