探索阿拉丁生物化学品和试剂的详细规格、分级标准和纯度水平。确保科学研究的可靠性和性能。
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: ...
硅烷化（silylation）是将分子中的“活泼氢”（–OH、–COOH、–NH₂、=NH、–SH等）替换为硅基（常见为三甲基硅基TMS或叔丁基二甲基硅基TBDMS），以生成更易挥发、极性更低、热稳定性更好的衍生物，从而改善GC/GC-MS的分离与检测灵敏度。硅烷化试剂通常对水极其敏感，需在无水、惰性条件下使用与保存。 ...
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 separation ...
"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 ...
“用于环保分析试剂”是专门为环境样品（如饮用水、地表水、地下水、废水、土壤、空气颗粒物、生物样品等）中污染物的采集、前处理、定性与定量测定而设计与分级的化学试剂。其核心特点是：纯度与杂质谱可满足特定环境监测/合规方法对检出限、空白值、回收率与准确度的要求，同时具备可追溯的质量证明（如COA/标准物质证书）。这类试剂常与法规或标准方法绑定使用（如EPA、ISO/EN、ASTM等）。 ...
“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.
“制备色谱级”的试剂与溶剂，是针对制备型色谱（从毫克到公斤级纯化目标化合物）优化的质量等级。
核磁定量标准品（qNMR standard）是专门为核磁共振定量（quantitative NMR, qNMR）而制备和认证的参考物质。通常证书会给出。
A qNMR standard is a reference material specifically prepared and certified for quantitative nuclear magnetic resonance (qNMR). Its certificate typically provides.
危险品化学品经营许可证（带存储）