Certificate of Analysis
Product Name
BES BUFFER 99% For Biochemistry
CAS Number
10191-18-1
Molecular Formula
C6H15NO5S
Catalogue No.
AL1911B
Molecular Weight
213.25 g/mol
Batch Number
AL-2026-AL1911B
Manufacturing Date
September-2026
Expire Date
September-2031
| Type of Test | Standard | Observed |
|---|---|---|
| Assay (Alkalimetric) | 99 % min. | 99.9% |
| Identity (IR) | Passes test | Passes test |
| UV-Absorption (250nm,5%,1cm,water) | 0.05 max | 0.013 |
| Chloride (Cl) | 0.005%max | <0.005% |
| Sulphate (SO4) | 0.005%max | <0.005% |
| Heavy metals (as Pb) | 0.0005%max | <0.0005% |
| Sodium (Na) | 0.01%max | <0.01% |
| Loss on drying (105 0c) | 0.5%max | 0.09% |
| Biological buffer pka at 20 0c | 7.15 | 7.15 |
Tested By
Hitesh Kunjathur
Analysed By
Preeti Rane