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1002 results for “nh2”

Welchrom Alumina-N, 1g/6mL, 30pcs/pk Welchrom Alumina-N, 1g/6mL, 30pcs/pk
P/N: 00518-20007
$50.00 USD
$50.00 USD
Welchrom non-silica-based inorganic SPE sorbents are commonly used as normal-phase polar sorbents. While they vary in polarity and surface pH, and thus have different applications, they are general...
QuEChERS Clean-up Tubes-2ml, AOAC Method, 150mg MgSO4, 50mg PSA, 50mg C18E, 100pcs/pk QuEChERS Clean-up Tubes-2ml, AOAC Method, 150mg MgSO4, 50mg PSA, 50mg C18E, 100pcs/pk
P/N: 00533-20020
$112.50 USD
$112.50 USD
QuEChERS (pronounced “catchers”) stands for Quick, Easy, Cheap, Effective, Rugged and Safe - the qualities that describe this sample preparation method for food substances. The technique is quite s...
Ultisil Amino Acid, Cartridge: 5µm, 120Å, 2.1×10mm, 2pcs
P/N: H00808-24040
$66.00 USD
$66.00 USD
Welch guard cartridges use the same packing materials as the analytical column to ensure the best analysis results. When HPLC column ID<4.0mm, it is recommended to use a 2.1×10mm cartridge, whil...
Welchrom SAX/PSA, 1g/500mg, 12mL, 20pcs/pk Welchrom SAX/PSA, 1g/500mg, 12mL, 20pcs/pk
P/N: 00569-11158
$110.00 USD
$110.00 USD
Welchrom SAX/PSA is composed of two layers: the upper layer contains an equal amount of SAX (Strong Anion Exchange) material, and the lower layer contains an equal amount of PSA (Primary and Second...
QuEChERS Clean-up Tubes-2ml, EN Method,150mg MgSO4, 25mg PSA, 25mg C18E, 100pcs/pk QuEChERS Clean-up Tubes-2ml, EN Method,150mg MgSO4, 25mg PSA, 25mg C18E, 100pcs/pk
P/N: 00534-20020
$90.00 USD
$90.00 USD
QuEChERS (pronounced “catchers”) stands for Quick, Easy, Cheap, Effective, Rugged and Safe - the qualities that describe this sample preparation method for food substances. The technique is quite s...
Xtimate PS/DVB, 5um, 100Å, 4.0×150mm  (1pcs/pk)
P/N: 00111-21032
$1,180.00 USD
$1,180.00 USD
Xtimate PS/DVB column utilizes polystyrene-divinylbenzene (PS/DVB) matrix, offering exceptional mechanical strength with a porous structure. Unlike traditional silica-based reversed-phase columns, ...
Ultisil Hilic-Amphion II, 5µm, 120Å, 1g Ultisil Hilic-Amphion II, 5µm, 120Å, 1g
P/N: H02746-02100
$100.00 USD
$100.00 USD
In the packing and purification processes, the packing material undergoes significant mechanical pressure. Therefore, the mechanical strength requirements for packing materials are generally higher...
2.1×30mm Ghost-Buster UP Column for HPLC, eliminates ghost peaks, removes impurities, reliable trace compound analysis
P/N: 06100-31021
$640.00 USD
$640.00 USD
During HPLC analysis, especially when employing gradient elution, some unexpected peaks (usually called “Ghost Peaks”) may appear in the chromatogram. These unwanted peaks often coelute with analyt...
Blossmate Amy-S, 10µm, 21.2×250mm (1pcs/pk)
P/N: 06683-31106
$12,000.00 USD
$12,000.00 USD
Welch preparative column uses the same packing materials as does analytical column, to ensure the best reproducibility of analysis and preparative scale. Special packing technique and stainless mod...
WEL-624, 50m×0.32mm×2µm
P/N: 01908-33005
$880.00 USD
$880.00 USD
WEL series capillary columns undergo rigorous testing, and each GC column is accompanied by evaluation spectra. The columns exhibit high efficiency, sensitivity, and cost-effectiveness, with short ...