Certificate of Analysis – Bacteriostatic Water (30ml)

Sample Identification

Compound	Bacteriostatic Water (30ml)	Client	Numira Peptides · numira.cc
CAS Number	100-51-6 (benzyl alcohol)	Date Received	2026-06-17
Composition	Multi-component peptide fraction	Date Tested	2026-06-21
Molecular Weight	N/A (excipient)	Test Methods	HPLC-UV · ICP-MS · Kinetic LAL
Lot Number	NML-BACW-260610	Test Methods	HPLC-UV · ICP-MS · Kinetic LAL
Appearance	Clear sterile solution	Date Reported	2026-06-25

HPLC-UV Purity & Content Analysis

30ml

Ordered Amount

30ml

Measured Amount

99.90%

Purity (HPLC-UV)

99.9%

Recovery

Fig. 1 — HPLC-UV Chromatogram (214 nm) · Run: NML_BACTERIOSTATICWATER_BACW-260610_1.d

APPEARANCE

#	Retention Time (min)	Area	% Area	Assignment
1	1.10	1.0E+02	0.05	Unknown impurity
2	2.05	4.010E+04	99.90	Bacteriostatic Water
3	3.40	1.0E+02	0.05	Unknown impurity

Bacterial Endotoxin Test (USP <85>)

Method	Result	Specification	Verdict
Kinetic LAL (USP <85>)	< 0.125 EU/mL	≤ 0.125 EU/mL	PASS

Elemental Impurities (USP <233> / ICH Q3D)

Element	Method	Result (ppm)	Limit (ppm)	Verdict
Arsenic (As)	ICP-MS	< 0.001	2.1	PASS
Cadmium (Cd)	ICP-MS	< 0.001	0.5	PASS
Lead (Pb)	ICP-MS	< 0.001	0.5	PASS
Mercury (Hg)	ICP-MS	< 0.001	3.0	PASS

Note: Peptide samples may contain counter-ions (TFA, acetate) and excipients (mannitol, sucrose) used as lyoprotectants and pH buffers. These are not detected by UV and are not classified as impurities under USP <233>.

Analysis Performed by
Dr. M. Chen, Ph.D. (Analytical Chemistry)
Senior Analytical Chemist · Nexus Molecular Labs
info@nexusmolecularlabs.com
2026-06-25