Description
EC 4/3 NUCLEOSIL 100-5 C18 is an HPLC guard column designed to safeguard analytical main columns in liquid chromatography. With a length of 4 mm and an internal diameter of 3 mm, it is intended for main columns of 3 mm, 4 mm or 4,6 mm internal diameter. The packing uses the NUCLEOSIL 100-5 C18 stationary phase, a C18-modified silica widely employed in reversed-phase HPLC. The product is supplied as a pack of three pieces from manufacturer Macherey-Nagel and must be used with the Column Protection System guard column holder (REF 718966). Positioning this short protective cartridge ahead of the analytical column helps retain particulate matter and strongly retained sample components, supporting longer main-column service life. The EC geometry fits standard HPLC setups that run 3 mm, 4 mm or 4,6 mm ID columns with NUCLEOSIL C18 chemistry. Correct combination of holder, guard cartridge and matching main-column diameter provides a practical route to stable, routine chromatographic performance in analytical laboratories.
This article is part of HPLC columns, in HPLC columns & accessories.
Key features
- Pack size: 3 pc(s)
- Product type: HPLC guard column
- Stationary phase: NUCLEOSIL 100-5 C18
- Length: 4 mm
- Internal diameter: 3 mm
- EAN: 4046681081378
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Questions about EC 4/3 NUCLEOSIL 100-5 C18
What is this article?
EC 4/3 NUCLEOSIL 100-5 C18 is the article on this page. Luminix Health distributes Macherey-Nagel for laboratory use. It sits in HPLC columns, inside HPLC columns & accessories, in Chromatography equipment.
An HPLC column is specified by the stationary phase, the particle size, the length and the internal diameter. A C18, 5 µm, 150 × 4.6 mm column is a different article from a C18, 3 µm, 100 × 2.1 mm column. The smaller bore belongs on a lower flow. A column has a direction and a pH range.
An HPLC column is a tube packed, or coated, with a stationary phase. The sample is carried through it by a liquid, and the compounds leave at different times. The phase, the particle size, the length and the internal diameter decide the separation. A guard column is a short sacrificial piece in front of the analytical column. Fittings and tubing have a bore that either preserves the peak or smears it. Compound names follow IUPAC. Data are on PubChem. Method grades often cite the European Pharmacopoeia or USP.
Which category should I open next?
The category is HPLC columns & accessories. The sub-category is HPLC columns. The catalogue is Chromatography equipment.
Shelves beside this one are HPLC fittings, tubing & inline filters, HPLC guard columns and HPLC accessories.
What should I check before I order?
When this page shows a safety data sheet, use that manufacturer file. Hazard text does not belong in the sales description. For a pack size, a grade or a certificate that is not on the page, send a quote request or contact the team.
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Luminix Health distributes this article from the heart of Europe. Articles in stock ship within 2–5 business days. Standard delivery is free from €250 excl. VAT. Cold-chain goods and dangerous goods under ADR are never included in that free delivery. The terms are in the Shipping Policy. The full brand index is on shop by brand. Who we are is on about us.
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The seven catalogues are Labware, Lab chemicals, Lab instruments, Lab consumables, Chromatography equipment, Lab safety equipment and Life Science & Microbiology.

