Welded PTFE Non-Sterile Syringe Filter

Labfil® Welded PTFE Non-Sterile Syringe Filter is a high-performance filter suitable for a variety of laboratory and industrial applications, providing reliable sample purification and separation solutions.

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Categories: Chromatography Consumables, Sample Filtration Tags: alw, Welded PTFE Non-Sterile Syringe Filter Brand: ALW

1) Description

Welded PTFE Non-Sterile Syringe Filter is a high-efficiency microporous filter widely used in laboratories and industries to separate, filter and purify liquid samples. Made of polytetrafluoroethylene (PTFE) material, the filter has excellent chemical resistance and can withstand a variety of corrosive solvents and chemicals, making it ideal for a variety of tests and applications.

2) Application

• Industrial Chromatography.

• Filtration of aqueous solutions as well as organic solvents and chemicals.

• For removing particulates, reducing signal-to-noise rations and maintaing flat baselines.

• Flitering aqueous and organic solutions.

• Degassing/ Clarifying aqueous samples.

• Removal of protein precipitates.

• Strong acid solvent filtration and Alkali solvent filtration.

3) Features

▶ This PTFE+PP pre-filter provides two times greater throughput than standard filter without pre-filteration. (Excepted 4mm)

▶ Broad chemical compatibility choose for filtering aqueous and organic solutions low protein binding.

▶ Hydrophobic PTFE membrane has great temperature resistance.

▶ Suitable for Solvents/ Gases/ Acids/ Bases.

▶ Two types in pore size: 0.22μm and 0.45μm.
▶ Four types in filter size: 4mm, 13mm, 25mm and 30mm.

▶ Customized package.

Cat. NO.	Diameter	Pore Size	Sterilization	Description	Package
PTFE Hydrophilic
C0000281	13 mm	0.22 μm	NO	PTFE Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000282	13 mm	0.45 μm	NO	PTFE Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000283	25 mm	0.22 μm	NO	PTFE Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000284	25 mm	0.45 μm	NO	PTFE Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000567	30 mm	0.22 μm	NO	PTFE Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000568	30 mm	0.45 μm	NO	PTFE Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk.
PTFE Hydrophobic
C0000297	13 mm	0.22 μm	NO	PTFE Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000298	13 mm	0.45 μm	NO	PTFE Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000299	25 mm	0.22 μm	NO	PTFE Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000300	25 mm	0.45 μm	NO	PTFE Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000574	30 mm	0.22 μm	NO	PTFE Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000575	30 mm	0.45 μm	NO	PTFE Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk.

Product Name	Welded PTFE Non-Sterile Syringe Filter
Material	PTFE Hydrophilic/ PTFE Hydrophobic
Material of Housing	PP
Effective Filtration Area	13mm/1.13cm²	25mm/4.15cm²	30mm/5.20cm²
Pore Size	0.22 μm /0.45 μm
Process Volume	＜10mL(13mm)	＜100mL(25mm)	＜150mL(30mm)
Maximum Operating Temperature	130℃
Maximum Operating Pressure	87psi
PH	1-14
Application	Chemical Filtration; Beverage Filtration
Package	100 pcs Packed in one Box

12ML Breath Testing Vial – Coated – Evacuated

ALWSCI® 12ML Breath Testing Vial, as a product of the breath testing series, is specially designed to solve the accuracy and reliability problems of breath testing.

Product Name	ALWSCI^®12ML Breath Testing Vial – Coated – Evacuated
Volume	12mL
Neck Type	Screw
Bottom	Flat Bottom
Vial Size	15.5x101mm
Vial Treatment	Coated, Evacuated
Label	Labelled, No Label
Cap Colors	White, Blue, Green, Yellow, Red, Light Blue, Purple, Customized
Certificate	CE certificate

Categories: Chromatography Consumables, Chromatography Vials Tags: alw, ALWSCI® 12ML Breath Testing Vial - Coated - Evacuated Brand: ALW

Glass Solvent Filter

ALWSCI® Glass Solvent Filter is a device commonly used in laboratories to filter solvents and other liquids to remove impurities and particles. This equipment is critical to ensuring the accuracy and cleanliness of chemical experiments and analyses.

Product Name	ALWSCI^®Glass Solvent Filter
Material	Borosilicate
Kit Contents	Filter Cup(Including Buchner Funnel) + Aluminum Clamp + GL45 Adaptor + Erlenmeyer Flask; Filter Cup(Including Buchner Funnel) + Aluminum Clamp + GL45 Adaptor + GL45 Laboratory Glass Bottle
Filter Cup Volume	300ml/ 1000ml
Receiver Flask Volume	500ml/ 1000ml/ 2000ml/ 5000ml
Membrane Diameter	47 mm/ 90mm
Colors	Transparent + Blue
Package	1 set Packed in one Carton

Categories: Chromatography Consumables, Sample Filtration Tags: alw, ALWSCI® Glass Solvent Filter Brand: ALW

Barcoded Vials & 2D Barcode Vials

ALWSCI® 12ML Breath Testing Vial, as a product of the breath testing series, is specially designed to solve the accuracy and reliability problems of breath testing.

Categories: Chromatography Consumables, Chromatography Vials

8-425 Open Top Screw Closures Pre-Slit

Zhejiang ALWSCI Technologies Co.,Ltd is one of the leading China 8-425 screw thread caps with septa manufacturers and suppliers, welcome to wholesale cheap 8-425 screw thread caps with septa, ptfe liner from us.

Categories: Caps & Septa, Chromatography Consumables

Crimp Headspace Vial

Categories: Chromatography Consumables, Chromatography Vials Brand: ALW

Welded MCE Non-Sterile Syringe Filter

Labfil® Welded MCE Non-Sterile Syringe Filter is a high-performance filter suitable for a variety of laboratory and industrial applications, providing reliable sample purification and separation solutions.

Product Name	Welded MCE Non-Sterile Syringe Filter
Material	MCE
Material of Housing	PP
Effective Filtration Area	13mm/0.72cm²	25mm/3.4cm²	30mm/4.5cm²
Pore Size	0.22 μm /0.45 μm
Process Volume	＜10mL(13mm)	＜100mL(25mm)	＜150mL(30mm)
Maximum Operating Temperature	40℃-55℃
Maximum Operating Pressure	29 psi-87 psi
PH	3-10
Application	Chemical Filteration; Biological Filtration; Beverage Filtration
Package	100 pcs Packed in one Box

Categories: Chromatography Consumables, Sample Filtration Tags: alw, Welded MCE Non-Sterile Syringe Filter Brand: ALW

White 8-425 Open Top Screw Closures

ALWSCI is one of the leading China 8-425 screw thread caps with septa manufacturers and suppliers, welcome to wholesale cheap 8-425 screw thread caps with septa, ptfe liner from us.

Categories: Caps & Septa, Chromatography Consumables Brand: ALW

50mm Vent Filter

Self-contained, compact filtration unit for removing bacteria and particles from the air.

Category: Chromatography Consumables Brand: ALW

SPE Cartridges

High-performance SPE cartridges with customizable sorbents and formats for efficient, reliable sample cleanup across a wide range of analytical workflows.

1) Description

Our Solid Phase Extraction (SPE) cartridges are designed for reliable and efficient sample preparation in analytical, environmental, food, and pharmaceutical laboratories. Available in a wide range of bed masses, volumes, and sorbent phases, these cartridges ensure consistent performance for trace-level enrichment, cleanup, and fractionation.

Made from high-purity medical-grade polypropylene, our cartridges are compatible with SPE systems. With customizable configurations including C18, Silica, PSA, NH₂ and more, they provide flexible solutions for diverse sample matrices and analytical methods.

2) Features

▶ Wide Sorbent Selection: Available with C18, Silica, PSA, NH₂, and custom sorbents to suit various analyte chemistries.
▶ Multiple Bed Masses & Volumes: Common formats include 3 mL and 6 mL with bed masses from 200 mg to 1000 mg, adaptable to method requirements.
▶ High Purity Polypropylene Housing: Free from extractables and compatible with most organic solvents.
▶ Excellent Flow Consistency: Uniform packing ensures minimal channeling and optimal retention/recovery rates.
▶ Standard connection Format: Compatible with positive pressure manifolds, vacuum manifolds, and automated SPE instruments.
▶ Secure Packaging: Packed in cleanroom environments; standard pack sizes include 30 or 50 pcs per bag.

3) Application

Environmental Analysis: Pre-treatment of water, soil, and wastewater samples for pesticide, PAH, PFAS, and heavy metal testing.

Food Safety Testing: Extraction of veterinary drug residues, mycotoxins, or additives from food matrices.

Pharmaceutical and Biomedical Research: Sample cleanup prior to LC-MS, GC-MS, and HPLC analysis.

Forensic and Clinical Studies: Extraction of drugs, metabolites, or biomarkers from biological fluids.

General Analytical Chemistry: Clean-up and enrichment of trace organic and inorganic analytes.

4) Sorbent Selection Guide by Target Compound Type

Target Compound Type	Recommended Sorbent(s)	Retention Mechanism	Typical Sample Types	Notes
Non-polar compounds (e.g., pesticides, PAHs, steroids)	C18, C8	Hydrophobic interaction	Water, serum, urine, plant extracts	C18 offers stronger retention than C8; ideal for reversed-phase cleanup
Moderately polar compounds (e.g., phenols, mycotoxins)	C18, Polymeric RP (e.g., PS-DVB)	Hydrophobic + π-π interaction	Food, biological fluids	Polymeric sorbents are more water-wettable, suitable for polar solvents
Highly polar compounds (e.g., organic acids, catechols)	HLB, NH₂, Diol	Hydrogen bonding, dipole-dipole	Urine, environmental water	HLB retains a broad range; NH₂ useful for weak anion exch. or polar groups
Weak acids (e.g., carboxylic acids, ibuprofen)	SAX, NH₂	Anion exchange	Plasma, pharmaceutical	SAX strongly retains acidic groups; pH optimization required
Weak bases (e.g., amines, alkaloids, β-blockers)	SCX, CM, Cation-Exchange HLB	Cation exchange	Plant extract, drugs in serum	SCX retains positively charged species; elution with NH₄OH or MeOH
Neutral small molecules (e.g., caffeine, parabens)	C18, Polymeric RP	Hydrophobic	Beverage, urine, cosmetics	Use mild elution to avoid co-extracting matrix
Aromatic compounds (e.g., benzene derivatives, flavonoids)	GCB, Phenyl	π-π interaction	Tea, herbal extracts, soil	GCB excels at planar aromatic removal; may adsorb target-test recovery
Sugars, sugar alcohols (e.g., glucose, mannitol)	Amine, Diol	Normal-phase	Beverage, fermentation broth	Not ideal for reversed-phase; use in NP or HILIC mode
Peptides / proteins (cleanup purpose)	C18 (for peptide), GCB (for protein removal)	Size exclusion / interaction	Serum, plasma	Use protein precipitation prior to SPE for better recovery
Hormones & endocrine disruptors (e.g., estradiol, BPA)	HLB, C18, CN	Hydrophobic, mixed-mode	Environmental water, cosmetics	HLB provides broader range capture for trace organics
Pesticides (polar & non-polar)	C18, GCB/PSA combo, QuEChERS + SPE	Multi-mode	Fruit/vegetables, grains	Use multi-layer or tandem SPE for complex matrix cleanup

Categories: Chromatography Consumables, SPE

2ML 9-425 Clear Screw Vial Graduated With Marking Spot

C0000008 2mL Clear Glass 12x32mm Flat Base 9-425 Screw Thread Vial with Label. 100pcs/pk.