What reagent grades, purity labels and specifications mean: ACS/AR, HPLC, electronic grade and tag-grade proteins, in 190+ guides from Aladdin Scientific.
Distillation grade reagents generally refer to products that, during manufacturing, undergo one or more stages of distillation or redistillation (fractional distillation / redistillation) to remove low-boiling and high-boiling impurities, moisture, and certain reactive impurities. The result is ...
“Suitable for Inorganic Trace Analysis” (also referred to as trace analysis grade/ultra-trace grade) is a suitability label used by suppliers for reagents intended to measure ultra-low levels of elements—typically metals and metalloids at the ppb–ppt level—by ICP-MS, ICP-OES, AAS, ion ...
“For DNA synthesis” is a functional grade formulated specifically for oligonucleotide (oligo) chemical synthesis and related enzymatic workflows. It is not merely “higher purity”; it prioritizes trace-level attributes that directly influence coupling reactions:
In protein and nucleic-acid workflows, dialysis is commonly used for buffer exchange, desalting, and removal of small molecules (e.g., salts, denaturants, inhibitors). The sample and the dialysate are separated by a semipermeable membrane: small molecules diffuse into the dialysate while ...
UPLC (UltraPerformance LC) is Waters’ trademarked name (introduced in 2004) for its ultra-high-efficiency liquid chromatography technology. In essence, it corresponds to what the industry commonly calls UHPLC (ultra-high-performance liquid chromatography). Technically the two are equivalent: ...
Silylation replaces the labile hydrogens in a molecule (–OH, –COOH, –NH₂, =NH, –SH, etc.) with silyl groups—most commonly trimethylsilyl (TMS) or tert-butyldimethylsilyl (TBDMS/tBDMS). The resulting derivatives are more volatile, less polar, and more thermally robust, which improves ...
"Environmental analysis reagents" are chemical reagents specifically designed and graded for the collection, pre-treatment, and qualitative and quantitative determination of pollutants in environmental samples such as drinking water, surface water, groundwater, wastewater, soil, air ...
“For Preparative Chromatography” reagents and solvents are quality-controlled specifically for preparative chromatography—i.e., purifying target compounds from the milligram up to kilogram scale.
A qNMR standard is a reference material specifically prepared and certified for quantitative nuclear magnetic resonance (qNMR). Its certificate typically provides.