Uni-chem Chemical Reagents Certificate Of Analysis 【PC LEGIT】

When you open a Uni-Chem COA (delivered digitally or physically), you will find the following standardized sections:

| Section | Description | | :--- | :--- | | Header Info | Product name, CAS number, Uni-Chem catalog #, batch/lot number, and manufacture date. | | Specification Table | Required limits (e.g., "Assay ≥ 99.5%") vs. actual test results. | | Test Methods | References to USP, EP, JP, or ASTM standards used (e.g., "By HPLC" or "By Titration"). | | Analytical Data | Raw and calculated results for assay, impurities, water content (K.F.), residue on ignition, etc. | | Certification | Signature (or digital stamp) of the Uni-Chem Quality Assurance Manager. | | Shelf Life & Storage | Retest date and recommended storage conditions to maintain the certified quality. |

Scenario: A biotech in Boston was using a discount reagent supplier for their cell culture media preparation. During a critical HPLC run to quantify a monoclonal antibody, they saw ghost peaks interfering with their analysis.

The Problem: When they requested the CoA from the discount supplier, they received a generic “Certificate of Suitability” with no batch number. They could not trace the impurity. uni-chem chemical reagents certificate of analysis

The Fix: They switched to Uni-Chem HPLC-grade water and Acetonitrile. Upon arrival, they scanned the QR code, downloaded the batch-specific CoA, and noticed the UV absorbance specification was tighter (≤0.005 AU vs the previous 0.05 AU).

The Result: The ghost peaks disappeared. The lab manager now requires a Uni-Chem CoA to be printed and attached to every batch log sheet before use.

Certificate of Analysis – Reagent Grade When you open a Uni-Chem COA (delivered digitally

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]

Batch# UC-2209-451 – Uni-Chem Hydrochloric Acid (37%)

| Parameter | Specification | Result | Conforms | |-----------|---------------|--------|----------| | Assay (HCl) | 36.5 – 37.5% | 37.2% | Yes | | Appearance | Clear, colorless | Pass | Yes | | Heavy metals (Pb) | ≤1 ppm | <0.5 ppm | Yes | | Bromide (Br⁻) | ≤0.01% | 0.005% | Yes | | Free chlorine | ≤0.0001% | <0.0001% | Yes | Certificate of Analysis – Reagent Grade Product Name:

Conclusion: Batch conforms to Uni-Chem’s AR grade specification.

Uni-Chem’s advanced CoAs include a footnote or separate column listing the test method (e.g., “USP <467> Residual Solvents” or “In-house HPLC Method #UC-78”). This allows lab managers to replicate the testing if needed.

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.