These Hydrometers are used for determining the specific gravity of liquids.
Lenses are made from clear acrylic with one frosted plane surface.
These polypropylene Centrifuge Tubes feature a screw top with easy to read black graduations. These centrifuge tube are sterile. Centrifuge tube come with conical tip bottom or self standing type. All centrifuge tubes have black graduation markings and blue screw down cap.