CERTIFICATE OF ANALYSIS

Product Name	TRIS BUFFER AR	CAS Number	77-86-1
Molecular Formula	NH 2 C(CH 2 OH) 3	Catalogue No.	AL4691
Molecular Weight	121.14	Batch Number
Manufacturing Date	December-2020	Expire Date	November-2025

TYPE OF TEST	STANDARD	OBSERVED
Description Assay pH (5% water) Absorption (A1%, 1 cm; 10% water) 260 nm 280 nm 300 nm 405 nm 430 nm Melting point Chloride (Cl) Sulphated ash Water	White crystalline powder (Min.) 99.5% 10.0 - 11.0 <0.02 <0.02 <0.02 <0.004 <0.004 169 - 171°C <0.001% <0.01% <0.5%	White crystalline powder 99.81% 10.52 0.008 0.006 0.001 0.003 0.0021 170°C <0.001% 0.009% 0.4%

Result: The above product complies with AR grade

Tested By
Hitesh Kunjathur

Analysed By
Preeti Rane