GL45 Mobile Phase Cap

GL45 Mobile Phase Caps are hermetically sealing closures for the safe supply of solvents to your HPLC. The screw caps block harmful vapours and protect your HPLC system from contamination.

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Categories: Caps & Septa, Chromatography Consumables Tags: alw, ALWSCI® GL45 Mobile Phase Cap Brand: ALW

1) Description

Designed specifically for laboratories, the GL45 Mobile Phase Cap features a rugged PP (polypropylene) shell and a PTFE (polytetrafluoroethylene) core, providing excellent chemical resistance and mechanical strength. The threaded design of the housing ensures compatibility with GL45 standard bottle necks, while the PTFE section in the center is essential to prevent leakage and evaporation of chemicals. The cap is designed to improve user convenience while ensuring the safety of stored contents. Its multi-color options (blue, red, yellow) are not only aesthetically pleasing, but can also be used for color coding for quick identification of different chemicals in the lab.

2) Application

GL45 Mobile Phase Cap is widely used in chemistry, biotechnology, pharmaceutical R&D and teaching laboratories to safely seal bottles containing various chemical reagents and biological samples. They are resistant to volatile compounds, acids, bases, solvents and other sensitive substances.

Cat.NO.	Description	Package
C0000270	Blue GL45 Safety Cap with Two holes for 1/8” inch OD tubing.	1 pc/pk.
C0000273	Blue GL45 Safety Cap with Two holes for 1/16” inch OD tubing.	1 pc/pk.
C0000434	Blue GL45 Safety Cap with Three holes for 1/8” inch OD tubing.	1 pc/pk.
C0000271	Red GL45 Safety Cap with Three holes for 1/8” inch OD tubing.	1 pc/pk.
C0000274	Red GL45 Safety Cap with Three holes for 1/16” inch OD tubing.	1 pc/pk.
C0000272	Yellow GL45 Safety Cap with Four holes for 1/8” inch OD tubing.	1 pc/pk.
C0000275	Yellow GL45 Safety Cap with Four holes for 1/16” inch OD tubing.	1 pc/pk.

Product Name	ALWSCI^®GL45 Mobile Phase Cap
Material	PP (Shell)+ PTFE (Core)
Number of Ports in Cap	2/ 3/ 4
Cap Colors	Blue/ Red/ Yellow
Port Size	1/8” inch OD tubing; 1/16” inch OD tubing
Package	1 piece Packed in one Bag/ Customized

HPLC Laboratory Syringe 2-Part Without Needle

This product is made of premium PP materials,which has good chemical resistance. All lots of this product have been manufactured in a clean environment under IS0 9001.In additional,all syringes are designed to match ALWSCl syringe filters and they also can be used with ALWSCI sample vials together.

Category: Chromatography Consumables

Plastic Sample Vial For GFAAS

Suitable for routine heavy metal detection and standard concentration range analysis.

Product	Plastic Sample Vial For GFAAS
Material	Polyethylene PE
Volume	2mL
Color	Translucent
Capped	NO
Application	For all versions of the programmable sampler dispenser (PSD) sample carousel for the Agilent GFAA.

Categories: Chromatography Consumables, Chromatography Vials Tags: alw, Plastic Sample Vial For GFAAS Brand: ALW

40ML Pre-Cleaned EPA VOA Vial

Pre-Cleaned EPA VOA Vials are specialized containers designed for the collection and storage of samples for testing volatile organic compounds (VOCs), total organic carbon (TOC), and other chemical analyses required by environmental protocols.

Product Name	ALWSCI^®Pre-Cleaned EPA VOA Vial
Material	Borosilicate Glass
Vial Sizes	27.5x57mm; 27.5×95mm; 27.5x140mm
Vial Colors	Clear/ Amber
Volume	20mL/ 40mL/ 60mL
Dust Cover	Y/N
Application	For the collection and storage of water samples.
Packaging	100/ 72 pcs Packed in one Box

Categories: Chromatography Consumables, Chromatography Vials Tags: alw, ALWSCI® Pre-Cleaned EPA VOA Vial Brand: ALW

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

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

12ML Breath Testing Vial – 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.

Categories: Chromatography Consumables, Chromatography Vials

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.

Categories: Chromatography Consumables, Chromatography Vials 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 Testing Vial – Coated – Evacuated