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Normal Phase Neutral Alumina (ALN) SPE Cartridges

Highly active porous matrix with large adsorption capacity
Good retention of aromatic amine pesticides
Stable with silica gel in high pH solution


Description of Normal Phase Neutral Alumina (ALN) SPE Cartridges

Neutral alumina (ALN) solid phase extraction (SPE) cartridge. Highly active porous alumina, the surface electrons of which form a pi-pi interaction with the aromatic ring, have strong polarity retention and Lewis acid properties. Compared to unbonded silica, alumina is more stable in high pH environments and is suitable for the extraction of aromatic amines.
Alumina has been specially treated to have three types of acidic (ALA) neutral (ALN) and basic (ALB), which can be matched to different target compounds.

Features of Normal Phase Neutral Alumina SPE Cartridges

Highly active porous matrix with large adsorption capacity
Good retention of aromatic amine pesticides
Stable in silica-bonded phase in high pH solution


Specific surface area: >150 m²/g
pH: 7.0


Analysis of amines, phenols, and glycosides in biological matrices such as catechol.
Detection of pesticides, veterinary drug residues, and contaminants in vegetables, fruits, and meat products, such as Sudan red, malachite green, and organophosphorus pesticides.
Detection of synthetic pigments in water.
Analysis of petroleum component.

Relevant Standards

GB/T 23816-2009 Determination of triazine herbicide residues in soybean
GB/T 19681-2005 Determination of Sudan red dyes in foods – High performance liquid chromatography
GB/T 20361-2006 Determination of malachite green and crystal violet residues in aquatic products by high performance liquid chromatography
Determination of malachite green in feed for NY/T 1756-2012


Technical Data

Specification Maximum Sample Load Volume Minimum Elution Volume
50-100mg 2.5mg-5mg 1mL 100-200μL
100-200mg 5mg-10mg 3mL 200-500μL
200mg-1g 10mg-50mg 6mL 500μL-6mL
500mg-2g 25mg-100mg 12mL 3mL-10mL

Ordering Information

Item   No.  Specification Package (pcs/pk)
SLSPE1001ALA Alumina, pH: 4.0, 50-100μm,   100mg/1mL 100
SLSPE2003ALA Alumina, pH: 4.0, 50-100μm, 200mg/3mL 50
SLSPE5003ALA Alumina, pH: 4.0, 50-100μm, 500mg/3mL 50
SLSPE5006ALA Alumina, pH: 4.0, 50-100μm, 500mg/6mL 30
SLSPE1K6ALA Alumina, pH: 4.0, 50-100μm, 1g/6mL 30
SLSPE1K12ALA Alumina, pH: 4.0, 50-100μm, 1g/12mL 20
SLSPE2K12ALA Alumina, pH: 4.0, 50-100μm, 2g/12mL 20
SLSPE1001ALB Alumina, pH: 9.5, 50-100μm, 100mg/1mL 100
SLSPE2003ALB Alumina, pH: 9.5, 50-100μm, 200mg/3mL 50
SLSPE5003ALB Alumina, pH: 9.5, 50-100μm, 500mg/3mL 50
SLSPE5006ALB Alumina, pH: 9.5, 50-100μm, 500mg/6mL 30
SLSPE1K6ALB Alumina, pH: 9.5, 50-100μm, 1g/6mL 30
SLSPE1K12ALB Alumina, pH: 9.5, 50-100μm, 1g/12mL 20
SLSPE2K12ALB Alumina, pH: 9.5, 50-100μm, 2g/12mL 20
SLSPE1001ALN Alumina, pH: 7.0, 50-100μm, 100mg/1mL 100
SLSPE2003ALN Alumina, pH: 7.0, 50-100μm, 200mg/3mL 50
SLSPE5003ALN Alumina, pH: 7.0, 50-100μm, 500mg/3mL 50
SLSPE5006ALN Alumina, pH: 7.0, 50-100μm, 500mg/6mL 30
SLSPE1K6ALN Alumina, pH: 7.0, 50-100μm, 1g/6mL 30
SLSPE1K12ALN Alumina, pH: 7.0, 50-100μm, 1g/12mL 20
SLSPE2K12ALN Alumina, pH: 7.0, 50-100μm, 2g/12mL 20
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