Qualitative Filter Papers

Qualitative Filter Papers are extremely pure filter papers made from almost 100% alpha cotton cellulose. Ash content app. 0.06%. Available as sheets, plain circles and pre-pleated ready to use. F- and "½" Types are pleated filters

 

Applications:

  • Clarify and remove precipitates
  • Preparation for qualitative analysis

 

Available Qualitative Filter Papers:

Advantec Grade1: Produced for general filtrations with a fast flow rate. This paper will retain coarse and gelatinous precipitates (>10 μm). Smooth paper of normal hardness.

 

Advantec Grade 2: This paper is thicker than No. 1 paper and will retain medium sized precipitates (5-10 μm). Smooth paper of normal hardness.

 

Advantec Grade 131: This paper has highest retention efficiency of qualitative papers (<5 μm) and slower flow rates.This paper has a higher wet strenght and will withstand suction.

 

Advantec Grade 231: This paper is thin and slightly more retentive (8 μm) than No. 1. General purpose.

 

Advantec Grade 232: This thin retentive paper (5 μm) has a slow initial flow rate.

 

Advantec Grade 235: Smooth, dense paper, the No. 235 will retain very fine crystalline precipitates. Smooth normal hardness.

 

 

Compatibility Table

Advantec®

Whatman®

Macherey & Nagel®

Schleicher & Schuell®

Grade 1

4

617

604

Grade 2

1

616md

593

Grade 131

3 ou 6

618

598

Grade 231

1

616md

593

Grade 232

2

616

597

Grade 235

5

619eh

602h