"bouteille de gaz"

Students find the answers to such questions as how much bacteria does soap or mouthwash eliminate, and which mouth contains more bacteria — a human or a dog.

Students use color-coded pop beads to visualize the structure of amino acid chains with this kit.

Test for the presence of bacteria in your workspace before and after cleaning with this TSA Microbiology Experiment Kit.

Students can explore their sense of touch and what it tells them with this drawstring cloth bag containing various pebbles, steel wool, cloth, sponge cube, cardboard, sandpaper, assorted round objects, and more. Blindfold available separately

Students investigate the inheritance of the ability to taste sodium benzoate by constructing a pedigree of the ability of members of their family to taste them. Includes: 1 vial sodium benzoate, 1 vial control papers (100 papers per vial), and a family pedigree chart. *Test Paper Factoid: Taste papers can be used to demonstrate inheritance. The ability to taste PTC is a hereditary trait. 7 out of 10 people will taste it. Sodium Benzoate tastes sweet, salty, bitter or will be tasteless to different people. Thiourea tastes bitter to most but is tasteless to some!

This kit demonstrates the principles of protein and amino acid analysis and enables students to identify unknown compounds.

Easier To Use Design!

Illustrated dissection guide.

Kick start your composter.

Large capacity hydroponics starter sheets.