Welded PVDF Sterile Syringe Filter

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

Liên hệ báo giá Gọi điện xác nhận và giao hàng tận nơi

Categories: Chromatography Consumables, Sample Filtration Tags: alw, Welded PVDF Sterile Syringe Filter Brand: ALW

1) Description

Excellent Welding Technology

Our welded PVDF sterile syringe filters use advanced welding technology to ensure the sealing and stability of the filter. This unique design effectively reduces the risk of contamination caused by loose connections or leaks, thereby ensuring the safety and reliability of the filtration process.

High Performance PVDF Membrane Material

The filter uses a high-quality polyvinylidene fluoride (PVDF) membrane, a material known for its excellent chemical stability and low protein adsorption. PVDF membranes have good resistance to a wide range of organic solvents and chemical reagents, making them ideal for handling sensitive biological samples.

Strict Aseptic Processing

Each filter undergoes strict sterile processing procedures to ensure its sterility for use in laboratory and medical environments. This is crucial for conducting clinical research and high-precision biological experiments.

Diverse Applicability

We offer PVDF filters with different pore sizes and connection types to meet the needs of different experiments and applications. These filters are easy to use with a variety of standard syringes, providing great operational flexibility.

2) Application

Filtration of Biological Samples: It is suitable for filtration of protein solutions, cell culture fluids and biological macromolecules to ensure the purity and sterility of samples.
Chemistry Laboratory Applications: In organic synthesis and chemical analysis, it is used for filtration of various organic solvents and acid and alkali solutions, and is especially suitable for processing samples that require high material stability.
Pharmaceutical Research and Development: It is widely used in the preliminary research and quality control process of drug development, and is especially suitable for filtration of drug solutions that are susceptible to contamination.
Environmental Monitoring and Analysis: In environmental monitoring, it is used to filter water samples, air samples, etc. to ensure the purity and accuracy of the samples.
Food Safety Inspection: In quality control and safety testing in the food industry, it is used for sample pretreatment to improve the accuracy and reliability of testing.

3) Features

▶ 100% integrity tested.
▶ Individually packaged.
▶ For sterilization/clarification of water, buffers, and salt solutions.

▶ Customized package.

Cat. NO.	Diameter	Pore Size	Sterilization	Description	Package
PVDF Hydrophilic
C0000496	13 mm	0.22 μm	YES	PVDF Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000497	13 mm	0.45 μm	YES	PVDF Hydrophilic Welded Syringe Filter with Printing.	100 pcs/pk
C0000498	25 mm	0.22 μm	YES	PVDF Hydrophilic Welded Syringe Filter with Printing.	50 pcs/pk.
C0000499	25 mm	0.45 μm	YES	PVDF Hydrophilic Welded Syringe Filter with Printing.	50 pcs/pk.
C0000516	33 mm	0.22 μm	YES	PVDF Hydrophilic Welded Syringe Filter with Printing.	50 pcs/pk.
C0000517	33 mm	0.45 μm	YES	PVDF Hydrophilic Welded Syringe Filter with Printing.	50 pcs/pk.
PVDF Hydrophobic
C0000492	13 mm	0.22 μm	YES	PVDF Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk.
C0000493	13 mm	0.45 μm	YES	PVDF Hydrophobic Welded Syringe Filter with Printing.	100 pcs/pk
C0000494	25 mm	0.22 μm	YES	PVDF Hydrophobic Welded Syringe Filter with Printing.	50 pcs/pk.
C0000495	25 mm	0.45 μm	YES	PVDF Hydrophobic Welded Syringe Filter with Printing.	50 pcs/pk.
C0000514	33 mm	0.22 μm	YES	PVDF Hydrophobic Welded Syringe Filter with Printing.	50 pcs/pk.
C0000515	33 mm	0.45 μm	YES	PVDF Hydrophobic Welded Syringe Filter with Printing.	50 pcs/pk.

Product Name	Welded PVDF Sterile Syringe Filter
Material	PVDF Hydrophilic/ PVDF 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	100℃
Maximum Operating Pressure	87psi
PH	2-10
Application	Food Industry; Medicine Filtration
Package	50/100 pcs Packed in one Box

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

Crimp Headspace Vial

Categories: Chromatography Consumables, Chromatography Vials Brand: ALW

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

C0000011 2mL Amber Glass 12x32mm Flat Base 9-425 Screw Thread Vial with Label. 100pcs/pk.

Product Name	ALWSCI^®2ML 9-425 Amber Screw Vial Graduated With Marking Spot
Material	Borosilicate Glass
Neck Type	Screw Thread
Vial Size	12×32mm
Volume(Metric)	2 ML
Vial Color	Amber
Bottom	Flat
Cap Included	NO
Application	For LC/GC
Packaging	100 pcs Packed in one Box

Categories: Chromatography Consumables, Chromatography Vials Tags: alw, ALWSCI® 2ML 9-425 Amber Screw Vial Graduated With Marking Spot 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

12ML Breath Sampling Vial – Non Coated – Non 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 Sampling Vial – Non Coated – Non Evacuated
Volume	12mL
Neck Type	Screw
Bottom	Flat Bottom
Vial Size	15.5x101mm
Vial Treatment	Non Coated, Non 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 Sampling Vial - Non Coated - Non Evacuated Brand: ALW

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

ICP-MS Plastic Sample Tube

Elemental analysis, analysis of metals and non-metals.

Product	ICP-MS Plastic Sample Tube
Material	Polypropylene PP
Volume	16 mL
Color	Translucent
Capped	NO
Application	For ICP MS Analysis.

Categories: Chromatography Vials, Chromatography Consumables Tags: alw, ICP-MS Plastic Sample Tube Brand: ALW

5mm Micro Insert Flat Base

C0000076 5x31mm Insert Clear Glass Flat Base. 100pcs/pk.

Categories: Chromatography Consumables, Insert

ND24 Sample Vials Kit

ALWSCI is supplying wide range of sample vials, from 2ml to 60ml, Clear/ Amber, used in laboratory. pre-assembled.