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Endotoxin-Free Products:
Made in the US.
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Endotoxin-free proteins are essential for advancing accurate and reliable scientific research and drug development in endotoxin-sensitive applications. Sino Biological’s Center for Bioprocessing (C4B) in Texas produces endotoxin-free proteins with levels below the quantification limit (BQL), surpassing industry standards (0.5 EU/mg according to USP <85>), best for pre-clinical animal studies, accurate detection and cell-based assays.
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Sino Biological’s Endotoxin-free Guarantee
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• Endotoxin-free plasmids and specialized mammalian expression systems
• Endotoxin-free buffer with filtration
• Low endotoxin-affinity plastic containers
• Regular Clean-in-place (CIP)
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Learn More 
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Featured Endotoxin-free Proteins
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Endotoxin-free
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High purity > 90% by SEC-HPLC
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Ideal for pre-clinical studies
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Ready to use for animal injections
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BQL: below the quantification limit.
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Learn More about Endotoxin-Free Proteins 
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Why Choose C4B for Endotoxin-free Protein Production?
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One-stop protein CRO service
Optimized expression platforms
ensure the highest chances of success
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Fast turnaround time
Customized antibodies & proteins
delivered in as fast as 2 weeks
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Superior quality
>90% purity by SEC-HPLC, endotoxin-free level
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Advanced equipment
State-of-the-art equipment & minimal endotoxin during processing
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Scalable production
24 well plates to 25 L bioreactors, we cover all your protein needs from screening to production scale
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Optimized mammalian platforms
mammalian expression system to ensure minimal endotoxin levels
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Sino Biological’s Center for Bioprocessing (C4B) in Texas is developing more endotoxin-free proteins. Our specialized mammalian expression systems and rigorous quality control ensure minimal endotoxin levels, making these products ideal for pre-clinical studies. You can contact us to inquire about the progress of the development. In addition, we also support custom development services!
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Learn More about Endotoxin-Free Protein Expression Services 
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