FAQs

FAQ

FREQUENTLY ASKED QUESTIONS

What are your prices?

We will send you an updated price list after you contact us for further information

Is the silk fIbroin sericin Free?

All of our silk fibroin related products, including degummed silk fibers, silk fibroin solution and soluble lyophilized silk fibroin, are sericin free, which means these products are bio-safety and have low immunogenicity.

What are the molecular weights of your products?

The molecular weights of two of our featured products, silk fibroin solution and soluble lyophilized silk fibroin, are both more than 200 KD.

What is the water-solubility or water-insolubility of soluble lyophilized silk fibroin?

This product can be totally dissolved into water within 1 to 2 minutes (see GIF from “Products” webpage). For most of organic solvents, the product is insoluble or slightly soluble except for hexafluoroisopropanol (HFIP).

What is the stability of your product named soluble lyophilized silk fibroin?

Since the vial is completely sealed, lyophilized silk can remain stable for a long period of time (> 18 months) at room temperature in terms of appearance, solubility, molecular weight distribution and structure.

How to send products to customers from China?

Products ordered will be delivered to customers within 7 days by international express companies including FedEx, UPS and DHL.

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