Whatman 1827-021 Glass Microfiber Filter 1.5 µm 21 mm Binder Free

Description

Product Overview

The Whatman 1827-021 glass microfiber filter is engineered to meet the demanding requirements of modern laboratory environments. Constructed from high‑grade borosilicate glass microfiber, the filter provides a binder‑free matrix that minimizes fiber shedding while delivering exceptional particle retention down to 1.5 microns. With a compact 21 mm diameter and a flow rate of 3.7 s per 100 mL, it integrates seamlessly into standard filtration setups, offering both high loading capacity and consistent performance across a wide range of applications. The filter’s robust construction ensures chemical resistance, making it suitable for aggressive solvents and harsh reagents commonly encountered in analytical chemistry, microbiology, and environmental testing. Its low fiber shedding characteristic protects downstream instrumentation, reducing maintenance intervals and extending the lifespan of critical equipment.

Usage

Designed for versatility, the Whatman 1827-021 filter excels in a variety of laboratory scenarios. It is ideal for sample preparation in high‑performance liquid chromatography (HPLC), where precise particle removal is essential to prevent column clogging and ensure reproducible results. In microbiology, the filter provides a sterile barrier for media preparation, protecting cultures from particulate contamination while allowing free passage of nutrients. Environmental laboratories benefit from its ability to filter water and soil extracts, capturing fine particulates that could interfere with downstream analytical techniques such as mass spectrometry or atomic absorption spectroscopy. The filter’s binder‑free composition also makes it suitable for applications involving aggressive acids, bases, and organic solvents, as the glass microfiber matrix remains stable without leaching contaminants.

Operationally, the filter can be employed in both vacuum and positive pressure filtration systems. Its 21 mm diameter aligns with standard filter holders, enabling rapid installation and replacement without the need for specialized tools. The high flow rate of 3.7 seconds per 100 mL ensures efficient processing of large sample volumes, reducing overall assay time and increasing laboratory throughput. Users appreciate the consistent performance batch after batch, which is critical for method validation and regulatory compliance in regulated industries such as pharmaceuticals and food safety.

Why Choose Us

Choosing the Whatman 1827-021 filter means selecting a product backed by decades of scientific expertise and rigorous quality control. Whatman, a trusted name in filtration technology, manufactures this filter under ISO‑9001 certified conditions, guaranteeing that each unit meets exacting specifications for pore size, flow rate, and mechanical strength. The binder‑free glass microfiber design eliminates the risk of polymeric residue, a common concern with synthetic filters, thereby preserving the integrity of sensitive analytical measurements.

Our commitment to customer satisfaction extends beyond product performance. We provide comprehensive technical support, including detailed application notes, troubleshooting guides, and direct access to filtration specialists who can assist with method development and optimization. In addition, we offer a flexible return policy and rapid replacement services for any batch that does not meet the advertised specifications, ensuring uninterrupted laboratory operations.

Key Features

• Binder‑free high‑grade borosilicate glass microfiber for superior chemical resistance
• Precise 1.5 micron particle retention ensures clean samples for sensitive analyses
• Compact 21 mm diameter fits standard filter holders, simplifying setup and replacement
• High loading capacity and low fiber shedding protect downstream equipment and reduce maintenance
• Dedicated technical support and rapid replacement service for uninterrupted workflow

FAQ

What types of solvents can the filter tolerate?

The binder‑free glass microfiber matrix is chemically inert to a wide range of solvents, including strong acids, bases, and organic solvents such as methanol, acetonitrile, and dichloromethane. This makes it suitable for most laboratory applications where solvent compatibility is critical.

Can the filter be reused after cleaning?

While the filter is designed for single‑use applications to ensure optimal performance, it can be gently rinsed with compatible solvents for limited reuse in non‑critical procedures. However, for quantitative analyses or when maximum particle retention is required, a fresh filter is recommended.

What is the recommended storage condition?

Store the filters in a dry, temperature‑controlled environment (15‑25 °C) away from direct sunlight and moisture. Proper storage maintains the integrity of the glass microfiber and prevents any potential degradation of the binder‑free structure.

How does the flow rate compare to synthetic membrane filters?

The 3.7 seconds per 100 mL flow rate of the Whatman 1827‑021 filter is comparable to high‑performance synthetic membranes, offering rapid filtration without sacrificing particle retention. This balance of speed and precision is a hallmark of the glass microfiber technology.

Is the filter compatible with standard vacuum filtration apparatus?

Yes, the 21 mm diameter aligns with common vacuum filtration setups and filter holders. It can be used with both vacuum and positive pressure systems, providing flexibility for a variety of laboratory workflows.