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analysis

Test tube with scale and white liquid in hand

Test tube with scale and white liquid in handDas Bild Test tube with scale and white liquid in hand von…

A laboratory test tube with a green solution in a man’s hand is heated over a fire

A laboratory test tube with a green solution in a man's hand is heated over a fireDas Bild A laboratory…

Heating the reagent over a fire on a black background

Heating the reagent over a fire on a black backgroundDas Bild Heating the reagent over a fire on a black…

Hand in glove holds flask with chemical solution over fire on black background.

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A round flask with a green solution in the hand of a scientist over a fire on a dark background

A round flask with a green solution in the hand of a scientist over a fire on a dark backgroundDas…

Scientist pouring liquid from a test tube, close up. Chemistry experiment

Scientist pouring liquid from a test tube, close up. Chemistry experimentDas Bild Scientist pouring liquid from a test tube, close…

Laboratory assistant in gloves with a flask and pipette working at the table

Laboratory assistant in gloves with a flask and pipette working at the tableDas Bild Laboratory assistant in gloves with a…

The concept of biological analysis of plants. Men’s hands in blue gloves with tweezers and sprouts

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Analysis text on blackboard

Analysis text on blackboardDas Bild Analysis text on blackboard von Marco Verch kann unter Creative Commons Lizenz genutzt werden (Namensnennung…

Laboratory concept with glass tubes

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Glass test tubes close-up. The concept of research

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Chemical solutions and indicator paper. Analysis concept

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Close-up of a solution in a dropper

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Drops of orange liquid fall into a glass laboratory tube

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Laboratory tests background. Green solution and a female hand with a pipette

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Laboratory test tubes in a wooden tripod

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Plastic spoon with white powder. Working with reagents

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Determination of ph in a laboratory glass tube

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Ph scale for comparing the result hydrogen index

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Close-up of a indicator paper with sour testing

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Litmus paper dipped in solution

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Indicator paper with alkaline testing

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Determination of ph using litmus paper

Determination of ph using litmus paperDas Bild Determination of ph using litmus paper von Marco Verch kann unter Creative Commons…

Close-up of the reaction between alkaline and acidic reagents in a test tube

Close-up of the reaction between alkaline and acidic reagents in a test tubeDas Bild Close-up of the reaction between alkaline…

A gloved hand holds a test tube. The concept of observing a chemical reaction

A gloved hand holds a test tube. The concept of observing a chemical reactionDas Bild A gloved hand holds a…

Close-up of a test tube with a solution in hand. Top view

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Mixing two reagents in a test tube

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Glass tubes with different reagents close-up

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The concept of studying chemistry. Test tubes and reagents on a white background

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Close-up of solution dripping from a pipette into a laboratory test tube

Close-up of solution dripping from a pipette into a laboratory test tubeDas Bild Close-up of solution dripping from a pipette…

Analysis in the laboratory background

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Close-up of a drop of orange solution on the tip of the pipette

Close-up of a drop of orange solution on the tip of the pipetteDas Bild Close-up of a drop of orange…

Laboratory test tube with orange solution in hand

Laboratory test tube with orange solution in handDas Bild Laboratory test tube with orange solution in hand von Marco Verch…

Hand in glove holding blood in test tube close up

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Test tubes with blood in laboratory on white background

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The doctor holds blood tubes in his hand. Blood test concept

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Men answering NO to the question if he suffer form alcohol addiction

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Men answering question if he suffer from alcohol addiction

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Men answering YES to the question if he suffer form alcohol addiction

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Men answering NO to the question if U.S. should build a wall along Mexican border

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