Soil testing laboratory. Close up image of female scientist wearing white coat taking notes in laboratory

Soil testing laboratory work. Close up image of female scientist wearing white coat taking notes in laboratory

Close up hands of a scientist in the laboratory measuring pH of the soil sample by electronic pH meter.

Hands in gloves of female scientist in laboratory shake glass flasks with dissolved samples of the soil. Agrochemical examination of soil.

Soil testing. Female biologist in white coat pouring water into test tube with dissolved samples of soil in laboratory. Agrochemical examination of soil.

Soil testing. Female biologist in white coat pouring water into test tube with dissolved samples of soil in laboratory. Agrochemical examination of soil.

Soil testing. Biologist's hand with protective gloves holding trowel with soil above samples separated in small containers.

Soil testing. Biologist's hand with protective gloves holding trowel with soil above samples separated in small containers.

Water department engineer testing water sample.

Soil testing. The biologist pours the soil with spatula from sample bag into the separated containers.

Water treatment plant control panel room.

Soil testing, close up. Biologist pouring water into containers with soil samples

Hydroponic lettuce farming at an Environmental Research Laboratory, USA