a man wearing a spectacle talking in front of the camera
a man stands near a paper towel dispener then begins a message about lab safety
a man in glasses explaining how to  clean science equipment
a man wearing a brown shirt and glasses is speaking about safety procedures in the lab
a scientist talks about how to avoid injuries in a lab
man in glasses talking about how to use lab equipment
a blonde man with glasses explains an experiment in a science lab
the host introduces the topic of how to avoid injury in the lab
a man in jacket stands in a lab with chemistry lab equipment including tanks and glassware
a man is discussing some functions for a science expirement
a man in a brown jacket standing in a room under many lights
a man wearing khaki coat black t-shirt and spectacles is telling about how to be save in a laboratory
a man in glasses talks about avoiding injury in the lab
a person wearing a purple glove shakes their hand vigorously while a host talks about lab safety
a person talks about some frustration and hard work peovary injury in the lab and some good techniques for usign labnoratory equipments correctly
a male is talking about how to avoid injury in a lab
this is about how to avoid getting injured in a laboratory environment
a man wearing glasses explains how to be safe in a science lab
a man is describing how to avoid injury in a laboratory
a guy with a brown jacket is talking in a lab