preparation of sample using vibrating mill. woman hands in blue gloves hold green powder sample after oscillating rotary sieve.

sample chemistry technology mill powder rotary professional researcher hold flask treatment scientific analysis experiment lab microbiology liquid bottle gloves glass science fluid health chemist drug biology medicine pipette test green research glassware pharmacy beaker biochemistry analysical pharmaceutical blue oscillating pharmacology genetic molecule glove using rack preparation scientist laboratory healthcare vibrating woman chemical development medical sieve hands tube equipment biotechnology instrument discovery tip