Βοηθός εργαστηρίου με δοκιμαστικό σωλήνα, τον αντίχειρα επάνω, θολή φόντο - Φωτογραφίες & Εικόνες Αρχείου

Lab assistant with test tube, finger down, blurred background

Chemist in respirator with test-tube, thumb up, on blurred background

Ecologist in respirator with test-tube on blurred background

Laboratory assistant in respirator and blue gloves with test tube in hands takes sample of water near lake shore

Ecologist with bulb and raised finger down on nature

Photo of ecologist in mask, protective suit with test tube, thumb up, on river bank

Checking the water by a specialist in a protective suit and mask

Ecologist with bulb and raised finger up in nature

Photo biologist takes water for examination in pond

Medical worker in protective suit, glasses, gloves with liquid soap in hands isolated on gray background in studio. Coronavirus epidemic

Photo ecologist from back and in protective suit with flask with water in hands on river bank

Human in protective suit, glasses, gloves with liquid soap in hands isolated on gray background in studio. Coronavirus epidemic

Photo of chemist takes water for examination in pond

Doctor in protective suit, glasses, gloves with liquid soap in hands isolated on gray background in studio

Laboratory assistant with test tube in hand on river bank

Man in protective suit, medical mask, goggles with arms crossed.