Run WARD’S Simulated Blood through the “kidney”, which is a semi-permeable membrane, and the blood remains, while the urine is excreted. Students make microscope slides to observe the absence of red blood cells in the urine. They also test the salt content before, during, and after filtering. Completely safe, this activity can be completed in just ten minutes. It includes all materials for 15 setups, a teacher’s guide, and student copymaster.
Materials Included
•1 Bottle, unfiltered simulated blood, 250 ml
•1 Package, dialysis tubing, 15 ft.
•15 Clear cups
• 60 Salt test strips
•15 Pipets
•1 Package, microscope slides, 72
•1 Package, coverslips, 100
•1 Package, disposable gloves, 100
Materials Needed But Not Provided
•Compound microscope
Time Requirement
•45 Minutes
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