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Seebio Biotech, Inc. 11-502 Lane 299, Bisheng Rd., Zhangjiang High-Tech park, Shanghai 201204  P.R. China

CERTIFICATE OF QUALITY

Product:

PEG 3350

Polyethylene glycol 3350

Grade:

High Purity Grade

Lot:

OG2103A

Code:

167228

CAS-No:

[25322-68-3]

Mol. Formula:

HO(C₂H₄O)_nH

Mol. Weight:

~3350

Packing:

25Kg/Drum

Purity

≥99.0%

99.2%

pH value (100g/l, H₂O, 20℃)

4.0~7.0

5.5

Water [KF]

≤1.0%

0.5%

Frdd ethylene oxide

≤1ppm

<1ppm

Arsenical

≤3ppm

<3ppm

Heavy Metals (Pb)

≤5ppm

<5ppm