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Collection of Test Tube Art (49)

Looking for Test Tube Art? Here you will find a carefully collected gallery of free images in high quality. Each Test Tube Art can be downloaded for school projects, presentations, websites or creative designs. Need a custom image? Try our free image generator. These cliparts are free for personal use. Please read the full terms of use.

Four colorful laboratory pipettes with polka-dot handles and measurement markings on a black background.
A set of four brightly colored pipettes with white polka dots, each featuring clear volume markings for precise liquid measurement.
Bright green test tube icon with three black horizontal markings on a black background.
A stylized green test tube with three black measurement lines-perfect for representing chemistry, biology, or laboratory work.
A clear glass test tube filled with yellow liquid and sealed with a light blue cap, isolated on black background.
A standard laboratory test tube holding a yellow fluid sample, capped for safe handling and analysis.
Green liquid in a tilted laboratory test tube with measurement markings.
A classic lab test tube containing bright green liquid, marked with measurement lines for precise volume reading.
Blank white vertical rectangle centered on black background, minimalist placeholder or design element.
A simple yet striking vertical white rectangle set against a deep black backdrop, perfect for design mockups or visual balance.
Simple line drawing of an empty glass test tube with rounded bottom and open top.
A classic empty test tube, ready for lab experiments or classroom demonstrations.
Hand holding a glowing test tube with purple liquid and sparkles, symbolizing scientific discovery or lab testing.
A hand carefully holds a test tube filled with bubbling purple liquid, radiating light to signify breakthrough or experimentation.
A clear glass test tube containing bright green liquid, tilted diagonally against a black background.
A tilted test tube filled with green liquid-commonly used to represent chemical reactions, plant extracts, or microbial cultures in labs.
Black line drawing of a laboratory test tube with measurement markings on a white background.
A simple yet accurate line drawing of a standard glass test tube used in chemistry and biology labs.
Wooden test tube rack holding six glass test tubes with varying liquid levels, some filled with pale yellow solution.
A classic wooden rack holds six test tubes, three containing pale yellow liquid, illustrating basic lab setup for experiments or demonstrations.
Four test tubes with green, orange, pink, and blue liquids in a rack, illustrating lab experiments or chemical analysis.
A clean, stylized illustration of four test tubes with distinct colored solutions, commonly used to depict laboratory testing or chemical reactions.
Three test tubes with purple, green, and orange liquids in a lab rack.
A standard lab rack holding three test tubes filled with distinct colored solutions: purple, green, and orange-commonly used to demonstrate chemical reactions or pH indicators.
Pink liquid in a black-outlined test tube icon, symbolizing science or lab testing.
A stylized test tube filled with bright pink liquid-commonly used to represent scientific experiments or chemical analysis.
Pink liquid in a clear test tube with light blue cap and pink dots, isolated on black background.
A clean, stylized test tube filled with pink liquid, commonly used to represent lab samples or chemical solutions.
Illustration of a glass test tube with gray liquid and measurement markings, used in scientific contexts.
A standard laboratory test tube filled to the 3/4 mark, showing clear volume gradations for precise measurements.
A green thermometer icon on a white background.
The image is a digital illustration of a thermometer. The thermometer is in the shape of a triangle with a pointed tip and a narrow neck. The body of the thermometer has a greenish-blue color and a white stripe running down the middle. The needle is slightly curved and appears to be made of glass. The background is white.
Blue liquid with bubbles in a glass test tube, representing a chemical reaction or lab experiment.
A classic lab test tube filled with reactive blue solution, showing gas evolution through visible bubbles.
Six colorful test tubes in a row-blue, light blue, orange, green, red, yellow-labeled "Test Tube Template"
A clean, labeled test tube template showing six color-coded vials-perfect for science diagrams and teaching resources.
Colorful test tubes filled with liquids arranged in a wooden rack, illustrating a chemistry lab setup.
A classic lab rack holding eight test tubes with colorful liquids-perfect for teaching basic chemistry concepts.
Five colorful test tubes with bubbling liquids-orange, yellow, green, blue, and purple-illustrating a chemical reaction or science experiment.
A row of five test tubes, each filled with a different colored liquid and rising bubbles, symbolizing active chemical reactions in a classroom or lab setting.
Purple stylized letter "E" with three horizontal cutouts on a black background.
A modern, high-contrast purple letter “E” with three horizontal negative-space bars-perfect for tech or design-forward brands.
Isometric illustration of colorful test tubes in a lab rack, representing scientific experiments or chemical analysis.
A clean, modern isometric view of multicolored test tubes arranged in a two-tier lab rack, perfect for illustrating scientific experimentation.
A stylized test tube with orange liquid and black measurement markings on a white background.
A simple yet clear illustration of a laboratory test tube containing an orange solution, commonly used to represent chemistry or scientific testing.
A hand-drawn illustration of a glass test tube containing granular solid material at the bottom, tilted diagonally on white background.
A classic test tube filled with a granular solid sample, commonly used to demonstrate basic lab procedures in chemistry education.
Laboratory setup showing a round-bottom flask connected via tubing to a test tube for gas collection or distillation.
A classic lab diagram illustrating gas collection or simple distillation using a round-bottom flask and test tube.
Four labeled test tubes with blue, beige, pink, and yellow liquids against a black background.
A clean vector illustration of four standard lab test tubes, each filled with a different colored liquid and capped in blue, commonly used to represent clinical samples or chemical reagents.
A tube of toothpaste with the word toothpaste written on it.
The image is a cartoon illustration of a tube of toothpaste. The tube is blue in color and has a red cap on top. The word "TOOTHPASTE" is written in red capital letters on the side of the tube. The label also has a film strip on the right side. The background is white.
Smiling cartoon test tube with green liquid and a friendly face, isolated on black background.
A happy, anthropomorphic test tube brings fun to chemistry and biology lessons.
Blue liquid bubbling in a conical flask, symbolizing scientific experimentation and chemical reaction.
A classic Erlenmeyer flask containing reactive blue solution, visualizing a chemical reaction in progress.
Open notebook with a blue pen resting on the right page, minimalist flat design illustration.
A simple open notebook with a pen ready for notes or journaling-perfect for study or creative planning.
Laboratory setup showing a test tube (a) heated by a flame, connected via delivery tube to an inverted gas collection bottle over a stand.
A labeled diagram of a gas collection setup: solid reactant in test tube 'a' is heated, producing gas that travels through a delivery tube into an inverted collection bottle.
A cartoon green liquid character in a test tube with arms, smiling and waving, set against a grassy outdoor background.
Meet our cheerful green lab buddy-ready to make science fun and approachable!
Line drawing of a laboratory separatory funnel with liquid layer and stopcock open, showing separation process.
A classic separatory funnel diagram showing two immiscible liquid layers and an open stopcock releasing the lower phase.
Laboratory setup showing a test tube clamped horizontally with a delivery tube leading to another test tube, and a lit splint nearby for gas testing.
A classic chemistry lab setup for generating and testing gases: gas evolves from the heated reaction tube, travels through the delivery tube, and is collected or tested with a glowing splint.
a black and white image of a window
The image is a black and white line drawing of four rectangular frames. The frames are arranged in a horizontal line, with the topmost frame being the largest and the bottom two being the smallest. Each frame has a small square in the center, with a slightly larger square on the left side and a smaller square on top. The background is plain white.
Bucky Badger in a lab coat and red sweater, holding a flask with red liquid.
Bucky Badger channels scientific curiosity, proudly representing UW-Madison’s academic excellence and research tradition.
A cheerful cartoon test tube character with green liquid, smiling face, arms, legs, and a badge with colorful blocks.
A happy, anthropomorphic test tube with a green liquid body, wearing a lab coat and badge-ideal for making chemistry fun!
Cartoon microbes in a petri dish with lab tools, showing friendly and angry bacteria characters.
Meet the smiling friendly microbe and its grumpy counterparts in this interactive science illustration!
Orange and gray notebook with lowercase 'a' on cover, minimalist design
A modern, two-tone notebook with an elegant lowercase 'a'-simple, stylish, and ready for your ideas.
Lab setup showing a condenser with coiled tube, receiving flask, and heat source for distillation.
A simplified schematic of a distillation apparatus, highlighting the condenser coil, heating vessel, and collection flask.
A cartoon character with striped hair peeks out from inside a transparent hanging pouch against a pastel zigzag background.
A curious little character with striped hair pops out of a soft, translucent pouch-ideal for lighthearted storytelling or app onboarding screens.
Three glass test tubes with layered liquids in yellow, orange, and purple hues against a white background.
Three Pyrex test tubes showing distinct liquid layers: clear with bubbles, amber over pale yellow, and violet over yellow-highlighting immiscibility and density differences.
Lab test tube, blue tie, black sneaker, blue glasses, and colorful bowtie arranged in a flat design.
A whimsical lineup blending scientific tools with everyday style-from test tubes to bowties.
A cartoon-style Erlenmeyer flask overflowing with bubbling green liquid and gas, depicting a vigorous chemical reaction.
A fun, exaggerated depiction of a vigorous chemical reaction in a lab flask, perfect for engaging young learners or illustrating lab safety concepts.
Two glass test tubes side by side, one with light blue liquid and the other with dark blue liquid, against a white background.
Left: pale blue solution; right: deep cobalt blue-demonstrating concentration or chemical reaction differences.
Three cheerful cartoon characters: a glass of orange juice, a pink candy, and a paintbrush, each with expressive faces and limbs.
Meet the happy crew: juice, candy, and paintbrush-each bringing fun and personality to your design!
A couple of glass vases filled with plants on top of a table.
The image shows three tall glass tubes with plants inside them. The tubes are arranged in a triangular formation, with the largest tube in the center and two smaller tubes on either side. The largest tube is on the left side, with a small plant inside, while the smaller one on the right side is in the middle. The plants inside the tubes appear to be succulents, with green leaves and small pink flowers. The background is white, and there is a small wooden structure on the bottom right corner of the tubes. The tube is placed on a green and white patterned placemat.
A glass vase with a picture of a man standing on top of a pile of rocks.
The image is of a tall glass cylinder with a cork stopper on top. Inside the cylinder, there is a small figurine of a person standing on top of a pile of colorful rocks. The rocks are of different sizes and colors, including blue, orange, yellow, and pink. The person is wearing a white shirt and blue jeans and is holding a black hook in their hand. The background is white. The cylinder appears to be empty and is standing upright.
a person holding a glass bottle filled with books
The image is a collage of three photographs of a glass bottle with a cork stopper. The bottle is filled with small figurines of a man sitting on a chair and reading a book. The figurines are made up of small pieces of paper and are arranged in a mosaic-like pattern. The top of the bottle has a small light bulb hanging from it, which is turned on. The background of the image is blurred, but it appears to be a bookshelf with books and other decorative items.