Analytical grade solvents (p.a.)

All three describe an analytical specification, and the product title tells you which ones a solvent meets. p.a. (pro analysi) means the solvent is tested for analytical use against a list of impurity limits. ACS and ISO mean it also meets the reagent specifications of the American Chemical Society or of ISO, which many standard methods refer to. A solvent can carry several, such as acetone, p.a., ACS, ISO, 1 l. Pharmacopoeia work needs Reag. Ph. Eur. grades, for example ethanol, aldehyde-free, Reag. Ph. Eur., 1 l.

Analytical-grade (p.a.) solvents suit wet chemistry, extraction, sample preparation and cleaning, such as methanol, p.a., ACS, ISO, 1 l, glass. HPLC and LC-MS grades are additionally tested for properties that matter in chromatography, such as UV transmission, evaporation residue and particles. Using a p.a. solvent as mobile phase can give ghost peaks, a noisy baseline or a blocked column. So choose the grade by the instrument, not by the chemical name. Chromatography grades are in HPLC and LC-MS grade solvents.

Most analytical solvents here come in 1 l or 2.5 l bottles, and some in 5 l, such as acetone, ACS, ISO, Ph. Eur., 5 l. Buy the size you use up within a reasonable time. Every opening lets in moisture and air, and some solvents slowly change once opened, which can affect sensitive analyses. Large packs pay off for cleaning and routine extraction; small packs for occasional or critical work. Plastic packs are lighter and do not shatter, as with methanol, p.a., ACS, ISO, 1 l, plastic. For larger volumes, ask sales@luminixhealth.com.

Most solvents are flammable liquids and travel as dangerous goods; the UN number is in the product data, for example UN 1090 for acetone, p.a., ACS, ISO, 1 l. That can affect transport options, pack sizes per shipment and delivery time. Tell us what you need and by when, and we will confirm how and when it can be delivered: sales@luminixhealth.com. On arrival, store flammable solvents in a ventilated safety cabinet, away from ignition sources and oxidising agents, and keep only the daily quantity at the bench.

An analytical-grade solvent, often marked p.a., has impurity limits tight enough for classical analysis and for preparing reagents. It is not automatically low enough in UV absorbance for HPLC, and it is not dry enough for a water-sensitive reaction. The grade is the purchase.

A solvent dissolves. The grade says which impurities are low enough for the method. Analytical grade is the ordinary pure solvent. HPLC and LC-MS grades limit the absorbance and the ions that would become peaks or background. A dry solvent has had water removed. A deuterated solvent is for NMR, where the hydrogen signal would otherwise drown the sample. Technical grade is for cleaning and for synthesis that does not need a chromatogram. Identity is on PubChem. Names follow IUPAC. Hazards follow ECHA, the CLP Regulation and REACH.

This shelf belongs to Solvents, inside Lab chemicals. Luminix Health distributes this range for laboratory use.

The neighbouring shelves are HPLC & LC-MS grade solvents, Dry & deuterated solvents (NMR, synthesis), Technical & synthesis grade solvents and Green & alternative solvents. The category above this shelf is Solvents.

Luminix Health distributes this range from the heart of Europe. We deliver across the EU in two to five days if in stock. 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. Send a quote request, contact the team, or read who we are. The full brand index is on shop by brand.

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