Dress code for lab work?

Hi! This is my first time working in a science lab and I'm a little confused by the dress code and my options seem a bit limited. (Seems like they dress coded my entire wardrobe)

Dress Code: - Should be conservative and loose fitting. - Closed – toe shoes must be worn, sneakers are acceptable - No revealing clothing - No pants with holes - No jegging or yoga pants - No hanging pants - No sandals or flip-flops - No bare midriffs - No low-slung or overly long jeans or slacks. - No shorts

I'm mostly concerned with the pants part, I have a small pants selection and I mostly wear yoga pants and flared jeans. I can easily borrow some pants from someone if I have to though! I just need help figuring out what kind of pants..?

I want to make a good impression but not quite sure how formal I should be. Would regular jeans or wide leg pants do?

Any advice is appreciated!

Edit: Thank you all for the suggestions! Safety is definitely a number one priority, I have a pretty good mental note of that after reading all these comments!