Frequently Asked Questions

How do I place an order?

You have the ability to place an online order here in our Ecommerce Store by shopping on our “Products” pages. If you are ordering in large quantities, have specific shipping requests, utilize a purchasing system or would like assistance from support in placing your order fill out the short form at Contact Us or call +1 503.245.0459 to speak to a customer service rep.

What are your business hours?

8am-5pm, Monday- Friday, Pacific Standard Time.

What are the minimum order quantities?

Those numbers are delineated by product on the ecommerce site. You can fill out the form at Contact Us or call at +1 503.245.0459 for more information.

I would like to have a conversation with a product specialist, how do I make contact?

The best way is to fill out the online form at Contact Us  and we will route your request to the individual who can best answer your questions or you can email

Where is the product shipped from?

We ship domestically out of our distribution center in Melvindale, MI.

Do individuals with a shellfish allergy have an adverse reaction to the use of Tricol’s chitosan-based products?

There are no reported allergic reactions to date caused by the OneStop or HemCon brands of products manufactured by Tricol Biomedical. The shellfish-derived chitosan that we use in the manufacture of these products has not been shown to produce any adverse reactions in people who are allergic to shellfish. In a study of 221 individuals with suspected hypersensitivity, none exhibited prick-reactions to chitosan, while 4 reacted positively to fish and 8 to shrimp allergens. *

*Harvima, I.T., Lyrra, M., Sarkkinen, E., Tapola, N., and Harvima, R.J., Evaluation of chitosan as a possible compound causing immediate hypersensitivity reactions, 2001, Oy Foodfiles Ltd and the Dermatological Department, Kuopio University Hospital: Oy Foodfiles Ltd, Bioteknia 2, Neulaniementie 2L6, 70210 Kuopio, Finland. p. 1-28.