Näytteenotto avovedestä. Tiedemies tai biologi ottaa vesinäytteen lähellä teollisuuslaitosta. Vesinäyte pipetillä varustetussa kemiallisessa koeputkessa. - Kuvapankin valokuva ja kuva

The scientist, in a protective suit, mask and gloves, took the liquid from the river, for a sample and checks its color, in the light, against the drainpipe

Two scientists in protective suits and masks working with laptop near sewerage

Male scientist in protective suit and mask holding fish by tweezers near river

Laboratory worker in a protective suit came to the sewage and adds reagents for water treatment

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. A sample of water in a round chemical flask.

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. Water sample in a chemical test tube with a pipette.

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. Water sample in a chemical test tube with a pipette.

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. Sample of water in a chemical test tube.

Sampling from open water. A scientist or biologist takes a water sample. Water sample in a chemical test tube with a pipette.

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. A sample of water in a round chemical flask.

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. A sample of water in a round chemical flask.

Sampling from open water. A scientist or biologist takes a water sample near an industrial plant. A sample of water in a round chemical flask.