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.
Can HPLC Grade Solvent Be Used for LC-MS?
Understanding the impurity control differences that affect mass spectrometry results
Direct AnswerHPLC grade solvent is generally not recommended for LC-MS applications, especially for trace-level or high-sensitivity analysis.
Checklist Before Purchasing Laboratory Chemicals
A practical guide to help procurement teams and lab users order with confidence
Direct AnswerBefore purchasing laboratory chemicals, users should confirm the correct chemical grade for their application, review available documentation such as SDS, COA, and product specification, check packaging size and material suitability, and verify supplier reliability and lead time.
How Do Impurities in Solvents Affect Analytical Results?
Understanding solvent purity and its impact on chromatographic accuracy
Direct AnswerImpurities in a solvent are unwanted substances that remain in the solvent even after purification.
What Is ACS Grade? How Does It Differ from AR Grade?
A clear guide to chemical grade terminology for laboratory and analytical use
Direct AnswerACS grade refers to a chemical purity standard set by the American Chemical Society (ACS), which defines minimum specifications for certain chemical reagents used in analytical and laboratory work.
Acetonitrile vs Methanol: Which Solvent Should You Choose for HPLC?
A practical comparison guide for HPLC method development and solvent selection
Direct AnswerAcetonitrile and Methanol are both widely used solvents in HPLC mobile phases, but they behave differently.
