Doubt about the originality of the tea under the brand name premium tea

Location/place: Thanjavur

Name of company/service: premium tea

I bought from kodaikanal. I doubt whether this is not adultered. how can I check this. The product detail is as follows.
Hills Premium tea, packed at Hills Tea, Anna salai, Kodaikanal-624101. Licence no.22577/04.
Thanking You
Baby