StonyLab Quantitative Filter Paper 75mm – 20 Micron 3 Box 100pcs

Description

Product Overview

The StonyLab Quantitative Filter Paper circles are engineered to meet the rigorous demands of modern analytical laboratories. Each sheet measures 75 mm in diameter, providing a perfect fit for standard 80 mm porcelain Buchner funnels, and is crafted from high‑purity cellulose that guarantees consistent performance across a wide range of filtration applications. The medium’s 20 µm particle retention capability ensures that only particles larger than this threshold are captured, delivering reliable quantitative results for gravimetric, pressure, and vacuum filtration methods. With an ash content of ≤0.01 %, the filter paper introduces minimal background interference, preserving the integrity of analytical measurements.

Designed for speed and efficiency, the filter paper exhibits a filtration time ranging from 35 to 70 seconds, depending on the vacuum pressure and sample viscosity. This rapid throughput enables laboratories to increase sample processing rates without compromising accuracy. The product is supplied in a convenient three‑box set, each containing 100 sheets, totaling 300 high‑quality filter papers ready for immediate use. The packaging includes clear labeling of dimensions and performance specifications, facilitating quick identification and inventory management.

Usage

StonyLab’s quantitative filter paper is ideal for a variety of laboratory environments, including academic research labs, industrial quality‑control facilities, and environmental testing centers. Its robust cellulose composition makes it suitable for both low‑pressure gravity filtration and high‑vacuum applications, allowing users to adapt the same filter media across multiple experimental protocols. The 75 mm diameter aligns with standard Buchner funnel sizes, ensuring a seamless fit that eliminates leakage and edge‑effects during filtration.

Typical use cases include gravimetric analysis of precipitates, determination of moisture content in solid samples, and the collection of particulate matter from liquid suspensions. The filter’s coarse retention rating of 20 µm is particularly advantageous when separating larger particles while allowing finer solutes to pass through, thereby simplifying downstream processing steps. Additionally, the low ash content minimizes contamination risk, making the paper suitable for trace‑analysis work where background purity is critical.

Why Choose Us

StonyLab Scientific has built a reputation for delivering laboratory consumables that combine reliability, consistency, and exceptional value. Each batch of quantitative filter paper undergoes stringent quality‑control testing to verify particle retention, ash content, and dimensional accuracy, ensuring that every sheet performs to the advertised specifications. The company’s commitment to customer satisfaction is reflected in its responsive support team, which is ready to address any concerns, from product inquiries to warranty claims.

Beyond quality assurance, StonyLab offers a comprehensive warranty that covers manufacturing defects and damage incurred during shipping. Customers who receive a compromised product can contact the support team for immediate replacement or refund, reinforcing the brand’s dedication to a hassle‑free experience. This level of after‑sales service distinguishes StonyLab from generic suppliers and provides laboratories with the confidence that their critical analytical processes will not be disrupted by sub‑par consumables.

Key Features

• Consistent 20 µm particle retention for reliable quantitative results
• Fast filtration speed (35‑70 seconds) reduces sample processing time
• Low ash content (≤0.01 %) minimizes background interference in analyses
• Universal 75 mm size fits standard 80 mm Buchner funnels for versatile use
• Dedicated customer support and warranty ensure satisfaction and reliability

FAQ

What types of analyses are best suited for this filter paper?

The filter paper is optimized for gravimetric analysis, moisture determination, and particulate collection where a 20 µm retention threshold is required. It works well in both gravity‑driven and vacuum‑assisted filtration setups, making it a versatile choice for a wide range of laboratory protocols.

Can the filter paper be used with vacuum pumps of varying pressure?

Yes. The cellulose medium is designed to handle a broad spectrum of vacuum pressures, from low‑vacuum laboratory pumps to high‑vacuum systems. Filtration time will vary with pressure, but the paper maintains its structural integrity and retention performance across the range.

How should the filter paper be stored to maintain its performance?

Store the filter papers in a cool, dry environment away from direct sunlight and moisture. Keeping them in their original sealed packaging until use helps preserve their low ash content and prevents contamination, ensuring consistent performance for each filtration run.

Is the filter paper compatible with chemical reagents?

The cellulose composition is chemically inert to most common laboratory reagents, including acids, bases, and organic solvents. However, for highly aggressive chemicals, it is advisable to perform a brief compatibility test to confirm that the filter paper does not degrade or leach substances that could affect analytical results.

What is the procedure if a batch arrives damaged?

Should any sheets be damaged upon receipt, contact StonyLab’s customer service immediately with the order details and photographs of the issue. The company will arrange for a replacement shipment or issue a refund, adhering to its warranty policy that guarantees high‑quality products and prompt resolution of any problems.