Log in
Email
Password
Register
Menu
Free Stock Photos
Newest photos
Popular photos
Contribute
Submission guidelines
Photographer signup
Photographer login
About
About Freerange
Image license
API
Contact us
Support
Contact support
FAQ
Login
Login
Register
Search all
Photos
Illustrations
Match All
Match Photo ID
Newest
Popular
Select Category
Editorial and News
Animals & Insects
Architecture
Architectural Details
Arts & Music
Backgrounds & Textures
Business & Office
Cities and Modern Life
Illustrations
Interiors
Flowers and Plants
France
Food & Drink
Health and Fitness
Holidays & Occasions
Industry & Agriculture
Landscapes & Nature
Letters and Numbers
Objects
Other
Military
People
Signs & Symbols
Sky and Clouds
Space
Sports & Recreation
Technology
Travel and Vacation
Transportation
Vintage Photos
Sponsored images from iStock
View footage results
Click to save 15% sitewide with code
FREERANGE15
View More
63 free tests photos from Freerange
Filter results
Popular
Most Viewed
Newest Photos
All licenses
Freerange
CC0
Photos & Illustrations
Photos
Illustrations
Per Page
25
50
100
Lab Equipment - Laboratory Instruments
Lab Equipment - Laboratory Instruments
Red Blood Cells
Human red blood cells
Blood Samples - Blood Tests - Medical Tests
Blood Samples - Blood Tests - Medical Tests
The connected human brains - Humans as a social beings
The connected human brains - Humans as a social beings
Exam Kids Means Youth Exams And Test
Exam Kids Representing Youth Child And Children
Application Maintenance Services Concept
Application Maintenance Services Concept
Lab Equipment - Laboratory Glassware
Lab Equipment - Laboratory Glassware
Microscope Closeup at Laboratory
Microscope Closeup at Laboratory
Syringe
Syringe containing blue solution.
Test Score B Shows Exam Grade And Mark
Test Score B Shows Exam Grade And Marks
Exam Quiz Means Questions And Answers And Examination
Exam Test Representing Questions And Answers And Quiz Game
The connected brains - The human as a social being
The connected brains - The human as a social being
Exam Kids Indicates Youngster Toddlers And Quiz
Exam Kids Showing Exams Quiz And Youths
Micro-pipette
Pipetting liquid into an ELISA plate.
Test Score A Indicates First Class And Performance
Test Score A Meaning First Class And Outcome
Bacteria
Examining bacteria colonies on an agar plate.
Determining dossolved oxygen
Determination of dissolved oxygen in a DO bottle showing color development.
Quiz Sign Show Quizzing Asking and Testing
Quiz Sign Showing Quizzing Asking and Testing
Antibiotic resistances
Bacteria resistant to antibiotics growing on an agar plate.
Red and blue sample trays
Lab trays with DNA sample tubes
Chemical reaction
Water being added to copper sulfate.
Astronaut Mark Lee Tetherless and Free
Backdropped against clouds 130 nautical miles below, astronaut Mark C. Lee floats freely without tethers as he tests the new Simplified Aid for EVA Rescue (SAFER) system
Education Exam Means Questionnaire College And Learned
Education Exam Showing Tutoring Tests And School
Students Taking an Exam
Students Taking an Exam
Dissolved oxygen test
Determination of dissolved oxygen in a DO bottle showing color development.
Find even more royalty free stock photos from the world's best photographers
View
of
3
Try your search on iStock: