試験管
試験管に入った薬
丸フラスコ
実験
実験イメージ
三角フラスコ
複数の試験管
液体を試験管に入れる
試験管とスポイド
試験管と葉っぱ
Test tube with red liquid
水と油
Benzoic acid precipitate
フラスコ
Phenol reactions
Iron (III) chloride solution
Close up of pipette in test tube
Biological research, conceptual image
4個のシャーレ
試験管と泡
試験管と手
Lab samples in test tubes
De-colourised bromine water
Metal displacement reaction
Fehling's reaction
Halogenoalkane reactions
Bromination of phenol
Precipitation reaction
Iron (II) and (III) precipitates
Displacement reaction
Calcium reacting with water
Zinc/acid reaction
スポイド
Row of test tubes with liquid, yellow background
Germany, Bavaria, Munich, Droplet being dispensed from pipette into test tube
フラスコの中の金魚
Healthcare And Medicine
Test tubes in a holder
Ammonia test
Test tubes in a tube rack
Cobalt chloride test for water
Positive cobalt chloride test for water
The cobalt chloride test for water
The ammonia test
Positive ammonia test
Poitive ammonia test
試験管とスポイト
Iron test
Close up of test tubes with liquid
Pipette dropping liquid in test tubes
Healthcare And Medicine,Glassware,Laboratory Glassware,Utensil,,Test Tube