Lab Filtration Products

Extraction Thimbles

Extraction thimbles are designed for Soxhlet extraction and solid-phase collection in analytical laboratories. They are available in cellulose and glass microfiber materials with consistent wall thickness and pore size, ensuring reliable performance in high-temperature applications. The binder-free construction minimizes contamination, and the range of sizes fits most standard Soxhlet apparatus. Custom dimensions are available for tubes, sleeves, and additional configurations.

Binder-free construction reduces extractables and contamination in sensitive analyses
Consistent wall thickness across all sizes ensures uniform flow and extraction efficiency
Available in cellulose and glass microfiber for compatibility with aqueous and organic solvents
High-temperature resistance up to 500 °C for glass microfiber and 120 °C for cellulose

Key Benefits

What This Product Gives You

Binder-free construction reduces extractables and contamination in sensitive analyses
Consistent wall thickness across all sizes ensures uniform flow and extraction efficiency
Available in cellulose and glass microfiber for compatibility with aqueous and organic solvents
High-temperature resistance up to 500 °C for glass microfiber and 120 °C for cellulose
Multiple sizes fit standard Soxhlet extraction units, reducing setup time and custom fitting

Available in cellulose and glass microfiber materials
Maximum operating temperature of 120 °C for cellulose and 500 °C for glass microfiber
Pore size of 8 µm for consistent particle retention
Wall thickness ranges from 1.0 to 3.0 mm depending on size
Designed for use in Soxhlet extraction units with standard dimensions
Binder-free construction to reduce extractables

Where It Is Used

Applications And Buyers

Application Scenarios

Soxhlet extraction of oil and fat content from solid food samples
Collection and analysis of pesticide residues in environmental and agricultural samples
Sampling of airborne particulates and dust in industrial hygiene and emissions monitoring
Smokestack gas monitoring for particulate matter and organic residue analysis
Solid-phase extraction of oil and grease from water and wastewater samples

Who It Is For

Pharmaceutical and environmental testing labs conducting Soxhlet extractions
Food and beverage labs measuring fat and oil content in solid matrices
Contract testing labs requiring consistent, low-extractable filtration media
Laboratories performing residue analysis on complex matrices with high particulate load
OEM partners needing custom thimble dimensions for integrated extraction systems

Problems It Solves

Contamination from binders or adhesives in filters leading to false positives in residue analysis
Inconsistent wall thickness causing uneven flow and incomplete extraction
Thimbles failing under high temperature during prolonged Soxhlet cycles
Lack of standard sizing across suppliers, requiring custom fittings or modifications
Inability to source thimbles in non-standard dimensions for specialized extraction setups

Data

Specifications

Material	Cellulose, Glass Microfiber
Max Temperature	120 °C (Cellulose), 500 °C (Glass Microfiber)
Pore Size	8 µm
Wall Thickness	1.0-3.0 mm (varies by size)
Filtration Rate	8 µm
Packing	25 pcs per pack
Application	Soxhlet extraction, particulate collection, gas analysis

Materials

High purity cellulose fibers
High purity glass microfiber, binder-free

Customization Options

Custom dimensions available for tubes, sleeves, and additional sizes
OEM private-label packing and branding through the Microlab OEM division
Custom wall thickness and length options for specialized extraction systems
Material selection tailored to solvent and temperature requirements

How It Is Made

Manufacturing And Quality Control

Manufacturing Process

Material selection based on application and temperature requirements
Roll forming of cellulose or microfiber into cylindrical thimble shape
Precision wall thickness control during forming
Binder-free construction to avoid extractables
Cutting to specified dimensions (OD × Height)
Final inspection and packing in 25-piece units

Quality Control

Wall thickness verified across sample batches
Pore size confirmed to 8 µm using standard test methods
Material integrity checked for consistency and absence of binders
Temperature resistance tested to maximum rated values
Visual inspection for defects, tears, or irregularities before packing

Comparison

Compared With The Alternatives

Versus Thimbles with binders or adhesives

Binder-free construction eliminates extractables that could interfere with residue analysis or chromatographic detection

Versus Standardized thimble sizes only

Custom dimensions allow integration into non-standard or legacy Soxhlet apparatus without modification

Versus Single-material thimbles

Dual material options (cellulose and glass microfiber) provide flexibility for solvent compatibility and temperature demands

Versus Non-uniform wall thickness

Consistent wall thickness ensures predictable flow and complete extraction across all samples

Use Guide

How To Use It

Select cellulose for applications under 120 °C and aqueous or mild organic solvents
Use glass microfiber for high-temperature extractions or aggressive organic solvents
Ensure the thimble diameter fits the Soxhlet extractor chamber and the height allows full immersion
Place the thimble in the extraction chamber and load the sample evenly to avoid channeling
Run extraction cycles according to method protocol, monitoring for clogging or pressure rise
Dispose of used thimbles after extraction; do not reuse due to risk of carry-over

Photos

Product Gallery

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Vacuum Filtration Setup Guide

FAQ

Questions Buyers Ask

What is the maximum temperature for cellulose thimbles?

Cellulose thimbles are rated up to 120 °C. For higher temperatures, use glass microfiber thimbles.

Are the thimbles made with binders or adhesives?

No. Both cellulose and glass microfiber thimbles are binder-free, reducing extractables in sensitive analyses.

What pore size do the thimbles have?

All thimbles have a pore size of 8 µm, ensuring consistent particle retention.

Can I get custom sizes outside the listed dimensions?

Yes. Custom dimensions for tubes, sleeves, and additional sizes are available through the Microlab OEM division.

How are the thimbles packed?

Standard packing is 25 pieces per pack. Each pack is clearly labeled with material, size, and part number.

Do you offer private-label packaging?

Yes. The Microlab OEM division supports private-label printing and packing for customers.