Hi CoralMoon,
It’s great that you have access to a laboratory; it will make getting experiments done a lot easier.
ATCC offers a wide variety of phage for sale, but there are very expensive:
http://www.atcc.org/CulturesandProducts ... fault.aspx
I did a quick internet search and did not find another source for Tr4 phage. Did you try doing a search? Do you need Tr4, or T4 phage? I think most college microbiology departments would have phage available and could provide this to you as a gift. Ask your teacher for a referral if you don’t know who to ask.
What are you planning to do for your experiment?
Donna Hardy