Why Is Acetonitrile Commonly Used in HPLC? Direct Answer
Acetonitrile is widely used in high-performance liquid chromatography (HPLC) because it combines several useful properties: it mixes with water, has relatively low viscosity, provides strong elution in many reversed-phase separations, and has low absorbance in the short-wavelength UV region when a suitable chromatography grade is used.
What Is GC-Grade Solvent and When Should You Use It? Direct Answer
GC-grade solvent is a solvent purified and tested for gas chromatography. It is selected to reduce solvent-related peaks, background, residue, and other contamination that could interfere with a GC chromatogram.
RCI Labscan HPLC Solvents Product Range
High-purity solvents designed to support reliable HPLC and LC analytical performance
Direct AnswerRCI Labscan offers a broad range of HPLC solvents designed for analytical and preparative separation, including use as mobile phases in HPLC and LC techniques.
What Should You Consider When Storing Flammable Chemicals in the Laboratory?
Key storage practices to reduce the risk of fire, chemical spills, and exposure to flammable vapors
Direct AnswerFlammable chemicals should be stored with careful consideration of their hazard classification, storage conditions, quantity, container compatibility, chemical compatibility, ignition sources, ventilation, and appropriate storage equipment.
Why Buying from an Authorized Distributor Matters When Purchasing Laboratory Chemicals
Understanding how sourcing channel affects product authenticity, documentation, and quality
Direct AnswerPurchasing laboratory chemicals from an authorized distributor helps ensure product authenticity, consistent quality, and access to reliable documentation such as SDS, COA, and product specifications.
What Procurement Should Check Before Ordering Laboratory Chemicals
A role-specific guide for procurement teams managing laboratory chemical orders
Direct AnswerBefore ordering laboratory chemicals, procurement teams should verify that the requested grade, quantity, and packaging match what the lab or technical team actually needs, confirm that required documentation such as SDS, COA, and product specification is available, and evaluate the supplier's reliability, communication, and lead time.
COA vs Specification: What Is the Difference?
Understanding two essential quality documents in laboratory chemical purchasing
Direct AnswerA Certificate of Analysis (COA) is a document that reports the actual, batch-specific test results for a particular lot of a product, confirming that it meets defined quality parameters at the time of testing.
What Is a COA and Which Values Should You Check Before Using Laboratory Chemicals?
(A Practical Guide to Understanding Certificate of Analysis for Laboratory Chemicals)
Direct AnswerA Certificate of Analysis (COA) is a quality assurance document issued by the chemical manufacturer for a specific production batch (lot) of a product.
What Is Product Specification and How Should You Read It? Direct Answer
A Product Specification is a document that defines the quality requirements, technical characteristics, and acceptable limits of a product. It helps users understand what a product is designed to meet before purchasing or using it.
What Are Ghost Peaks and How Are They Related to Solvent Impurities? Direct Answer
A Ghost Peak is an unexpected chromatographic peak that cannot be linked to the intended sample components.
In HPLC, Ghost Peaks may come from:
Impurities in the mobile phase or solvents Contamination from the HPLC system Carryover from a previous injection Contaminated sample preparation materials Column contamination or strongly retained compounds Additives, buffers, or water used to prepare the mobile phase Contamination from containers, tubing, filters, or other consumablesTherefore, solvent impurities are one possible source of Ghost Peaks, but they are not the only cause.
