!full! — Uni-chem Chemical Reagents Certificate Of Analysis

| Test | Specification | Result | Method | |------|--------------|--------|--------| | Assay (by titration/HPLC) | ≥ 98.0% | _______ | USP/Ph. Eur. | | Melting point | ___ – ___ °C | _______ | Capillary method | | pH (5% solution, 25°C) | ___ – ___ | _______ | Potentiometric | | Loss on drying | ≤ 0.5% | _______ | Gravimetric | | Residue on ignition (sulfated) | ≤ 0.1% | _______ | 600°C furnace | | Heavy metals (as Pb) | ≤ 10 ppm | _______ | ICP-OES/AAS | | Chloride (Cl) | ≤ 0.01% | _______ | Turbidimetric | | Sulfate (SO₄) | ≤ 0.01% | _______ | Turbidimetric | | Water content (K. Fischer) | ≤ 0.2% | _______ | Coulometric |

To master the , you must understand its structure. While formats vary slightly by product type, a standard Uni-Chem CoA contains the following 8 critical sections: uni-chem chemical reagents certificate of analysis

Uni-Chem produces pH buffer powders (pH 4.00, 7.00, 10.00). The CoA tells you the exact temperature-dependent pH values. A pH meter calibrated with buffers assuming the wrong temperature coefficient will give invalid results for bioreactor media. | Test | Specification | Result | Method

Uni-Chem and similar suppliers generally provide COAs through three primary methods: Certificates of Analysis (COA) | UCT Fischer) | ≤ 0

A typical Uni-Chem Chemical Reagents Certificate of Analysis includes the following information: