Whatman 1827 125 Glass Microfiber Filter 12.5cm 1.5um Grade 934-AH

Description

Product Overview

The Whatman 1827 125 Glass Microfiber Filter is engineered for demanding laboratory environments where precision, reliability, and durability are essential. Featuring a 12.5cm diameter borosilicate glass fibre disc, the filter delivers a nominal pore size of 1.5µm, providing exceptional particle retention while maintaining a high flow rate of 3.7 seconds per 100 mL. The binder‑free construction eliminates extractable contaminants, ensuring that downstream analyses remain free from interference. Designed to withstand temperatures exceeding 500 °C, this filter is compatible with a broad range of chemical and thermal processes, making it a versatile choice for both routine and specialized applications.

Grade 934‑AH glass fibre offers a smooth surface that reduces clogging and extends the loading capacity of each disc. The filter complies with Standard Methods 2540D, a widely recognized protocol for total suspended solids determination, turbidity removal, and bacterial culture filtration. Its robust design enables consistent performance even under high‑throughput conditions, delivering reproducible results across multiple runs.

Usage

Laboratory technicians and environmental scientists rely on this filter for water pollution monitoring, where accurate measurement of suspended solids is critical. The high flow capability allows rapid processing of large sample volumes without sacrificing retention efficiency, making it ideal for field sampling campaigns and high‑throughput laboratory workflows. In cell harvesting applications, the filter’s fine pore size captures microorganisms while permitting the passage of culture media, facilitating downstream processing steps such as centrifugation or chromatography.

Additional use cases include liquid scintillation counting, where the filter removes particulate matter that could interfere with scintillation efficiency, and air pollution monitoring, where it serves as a pre‑filter for particulate collection devices. The filter’s temperature resilience also supports applications involving hot solvents or thermal sterilization, expanding its utility across diverse scientific disciplines.

Why Choose Us

Choosing the Whatman 1827 125 Glass Microfiber Filter means selecting a product backed by decades of expertise in filtration technology. Whatman’s rigorous quality control processes ensure each disc meets exacting standards for pore size distribution, flow consistency, and mechanical strength. The binder‑free glass fibre matrix reduces the risk of leaching, a critical factor for sensitive analytical methods such as trace metal analysis or molecular biology assays.

Our commitment to customer support extends beyond the point of sale. Technical assistance is available to help integrate the filter into existing protocols, and we provide detailed documentation, including compatibility charts and standard method references. With a proven track record in both academic and industrial settings, this filter delivers the confidence needed for high‑stakes research and compliance‑driven testing.

Key Features

• High retention efficiency of 1.5µm ensures reliable removal of fine particles.
• Fast flow rate of 3.7 s per 100 mL reduces processing time for large sample volumes.
• Binder‑free borosilicate glass fibre minimizes extractable contamination for sensitive analyses.
• Temperature resistance up to 500 °C expands applicability to hot‑solvent and sterilization processes.
• Dedicated technical support and detailed protocol guidance enhance user confidence and success.

FAQ

What is the recommended pre‑wetting procedure for this filter?

Pre‑wet the disc with the same liquid that will be filtered, typically deionized water or the sample matrix, for at least 30 seconds. This step removes air bubbles and stabilizes flow, ensuring consistent performance.

Can the filter be reused after a single use?

The filter is designed for single‑use applications to guarantee maximum retention and prevent cross‑contamination. Re‑use is not recommended, especially for microbiological or trace‑analysis work.

Is the filter compatible with organic solvents?

Yes, the borosilicate glass fibre disc is chemically resistant to most organic solvents, including ethanol, methanol, and acetone. However, extreme solvents should be tested for compatibility before routine use.

How does the filter perform at high temperatures?

The filter maintains structural integrity and filtration efficiency at temperatures up to 500 °C, making it suitable for hot‑solvent extractions, thermal sterilization, and high‑temperature analytical procedures.

What is the maximum sample volume that can be filtered efficiently?

With a flow rate of 3.7 s per 100 mL, the filter can process several liters per hour without significant pressure buildup, provided the sample does not contain excessive solids that could exceed the disc’s loading capacity.