Specifications Table

Product Name – Whatman Extraction Thimbles HPGF
Quantity/Pack Size – 19x90MM (Pack of 25), 25x90MM (Pack of 25), 30x100MM (Pack of 25), 43x123MM (Pack of 25), 53x135MM (Pack of 25)
Form – Thimble
Grade – High Purity
Application – Solvent extraction, Soxhlet extraction, environmental analysis

Product Overview

Whatman HPGF extraction thimbles are engineered for high-purity solvent extraction applications, offering unmatched durability and chemical resistance. Constructed from borosilicate glass microfibers, these thimbles provide superior retention of fine particulates while maintaining excellent flow rates. Their robust design ensures compatibility with aggressive solvents, making them ideal for Soxhlet extraction, environmental testing, and other demanding lab procedures. The uniform pore structure guarantees consistent filtration performance, reducing the risk of sample contamination. These thimbles are heat-resistant up to 500C, allowing for high-temperature applications without structural compromise. Each thimble undergoes rigorous quality control to meet international standards for laboratory filtration media. The high loading capacity minimizes the need for frequent replacements, improving workflow efficiency. Their smooth inner surface prevents particle entrapment, ensuring complete sample recovery. Available in multiple sizes to accommodate various extraction apparatus, these thimbles provide versatility for different experimental setups. The chemically inert nature of the glass fiber material prevents any interaction with the sample, maintaining analytical integrity. Their rigid structure maintains shape integrity even under vacuum conditions, preventing collapse during operation. The thimbles are pre-cleaned to minimize extractables, reducing background interference in sensitive analyses. Their consistent wall thickness ensures uniform filtration across the entire surface area. These extraction thimbles represent the gold standard for reliable, high-performance solvent extraction in laboratory settings.

FAQs

1. What solvents are compatible with Whatman HPGF extraction thimbles?

These thimbles are compatible with most organic solvents including acetone, hexane, methanol, and dichloromethane. They also resist mild acids and bases.

2. Can these thimbles be reused after washing?

While technically possible, reuse is not recommended as residual contaminants may affect subsequent extractions. The low cost makes single-use practical for most applications.

3. How do I determine the correct thimble size for my Soxhlet apparatus?

Measure your Soxhlet extractor’s chamber diameter and height. Choose a thimble that fits snugly with 2-3mm clearance on all sides for optimal solvent circulation.

4. What’s the maximum temperature these thimbles can withstand?

The borosilicate glass fiber construction allows continuous operation up to 500C, making them suitable for high-temperature extraction procedures.

5. Are these thimbles suitable for food testing applications?

Yes, their high purity and low extractables make them appropriate for food analysis, including fat extraction and pesticide residue testing.