"Janitorial Supplies"

Improves visibility in sodium and potassium flame tests.

An economical supply for your chromatography studies.

Separate the different colors of a solution.

The most widely used qualitative filter paper for routine applications.

Whatman Grade 4 qualitative filter paper.

Perfect for your paper chromatography needs.

How do you remove settled wastes from the gravel in your aquarium? Use these powerful undergravel filters to keep your aquarium water sparkling clean.

Whatman mixed cellulose ester membranes are composed of cellulose acetate and cellulose nitrate. These membranes are characterized by a smoother and more uniform surface than pure nitrocellulose filters.