A: Uni-Chem retains digital copies of CoAs for at least 5 years post-expiry. Go to their website, enter the batch number, and reprint it.
Abstract
The Certificate of Analysis (CoA) is a critical document that validates the quality, purity, and concentration of chemical reagents used in analytical and industrial laboratories. This paper examines the structure, content, and regulatory relevance of Uni-Chem’s CoA. It outlines the typical specifications—such as assay value, identity confirmation, impurity limits (heavy metals, residue on ignition), and physical properties—and explains their role in ensuring batch-to-batch consistency and compliance with pharmacopoeias (e.g., BP, USP) or ISO standards.
A valid CoA must have the signature (or digital approval) of the Quality Assurance Manager and the Analyst. At Uni-Chem, this is often accompanied by a digital timestamp to prevent fraud.
A typical Uni-Chem CoA contains the following sections: uni-chem chemical reagents certificate of analysis
| Component | Description | |-----------|-------------| | Product Name & Code | e.g., “Uni-Chem Sodium Chloride, AR Grade, Cat# UC-1001” | | Batch/Lot Number | Unique identifier for traceability | | Manufacturing Date | Date of production | | Retest/Expiry Date | Recommended date for re-analysis | | Appearance | Physical description (white crystalline powder, clear liquid, etc.) | | Assay (Purity) | Percentage purity (e.g., ≥99.5% by titrimetry) | | Identity Tests | Confirmation via IR, Na⁺/Cl⁻ spot tests, or retention time (HPLC) | | Impurities | Limits for chlorides, sulfates, heavy metals (as Pb), iron, etc. | | Loss on Drying | Moisture content (e.g., ≤0.5% w/w) | | Residue on Ignition | Non-volatile inorganic residue | | Solubility | Compliance with specification | | Test Methods | References to standard procedures (AOAC, USP, in-house) | | Signature/Approval | Quality control officer’s name and date |
In the world of analytical chemistry, research, and industrial manufacturing, a reagent is only as reliable as its documentation. At Uni-Chem, we don’t just sell chemicals; we provide verifiable certainty. The Uni-Chem Certificate of Analysis (COA) is the cornerstone of our quality promise.
Certificate of Analysis – Reagent Grade A: Uni-Chem retains digital copies of CoAs for
Product Name: [e.g., Sodium Chloride, Anhydrous]
Catalogue Number: [e.g., UC-10234]
Batch / Lot Number: [e.g., UC-B20241015-01]
Manufacturing Date: [DD/MMM/YYYY]
Expiry / Retest Date: [DD/MMM/YYYY]
Molecular Formula: [e.g., NaCl]
Molecular Weight: [e.g., 58.44 g/mol]
CAS Number: [e.g., 7647-14-5]
We, Uni-Chem Chemical Reagents, hereby certify that the above product meets the stated specifications. This analysis was performed in accordance with our Quality Management System (ISO 9001:2015 certified). No unauthorized modifications have been made to this document.
Authorized by: __________________________
Name: [Quality Manager Name]
Title: Quality Assurance Director
Date of Issue: [DD/MMM/YYYY] A typical Uni-Chem CoA contains the following sections:
Uni-Chem Chemical Reagents
[Address Line 1], [City, State, ZIP]
Tel: [Number] | Email: qc@uni-chem.com | www.uni-chem.com
This document is electronically signed and valid without wet signature.