"solar filter"

Suitable for filtration of aluminum phosphate, barium carbonate, lead chromate, and more.

Uses include filtration of aluminum phosphate, zinc ammonium phosphate, and silver chromate.

Grade 93 qualitative filter paper.

Pack of 100 premium Qualitative Filter Papers with medium speed (85 gsm) and 10 µm pore size.

These cellulose filter papers are intermediate in speed and retention between grades 1 and 4.

The glass filter paper is excellent for microwave testing where temperatures get very high such as for use in a food experiment where all the moisture is microwaved out to see how much solid is left behind. Withstands temperatures to 500 °C. Size of each: 11 cm diameter.

Whatman Grade 4 Qualitative Filter Papers are a standard grade, high flow rate filter paper. They are useful in qualitative analytical separations when fast flow is required and the collection of fine particles is not critical.

The most widely used qualitative filter paper for routine applications.

High Quality Filter Paper.

Qualitative Filter Paper is available in three standard grades.

Quantitative filter papers are used for gravimetric analyses or filtrations where the precipitate is to be recovered.

A general qualitative filter with creped surface. Faster than grade 201 and retains large crystalline coarse particles. Widely used in industrial laboratories and students laboratories for routine filtration.

A general qualitative filter for less critical routine analysis. Widely used in industrial laboratories and students laboratories for routine filtration.

Whatman Grade 4 qualitative filter paper.

Qualitative filter paper.

A good quality paper recommended for student use and all routine filtering operations. This is a strong filter paper with a medium flow rate and retention.