Cytiva

Whatman™ Grade 1 Qualitative Filter Papers

Whatman Grade 1 Qualitative Filter Papers are the most widely used filter paper for routine laboratory applications, qualitative analytical separations, and clarifying liquids. They are the standard grade cellulose filter papers for medium flow rates.

  • Qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate
  • Agricultural soil analysis and seed testing procedures
  • Industrial food processing techniques to extract liquid or separate solid foodstuffs from associated liquid
  • Air pollution monitoring by collecting atmospheric dust from airflow and photometrically measuring the stain-intensity
  • Gas detection by quantitative chromogenesis with optical reflectance

Grade 1 Qualitative Filter Papers (11 µm particle retention) are available in a variety of sizes and formats including circles, sheets and prepleated filters. They are also available in FilterCup format, a convenient, 250 ml capacity disposable 70 mm filter funnel molded from polypropylene with an integral, heat-bonded filter.

Grade Grade 1
Thickness 180 µm (Typical)
Particle retention 11 µm (Particle retention rating at 98% efficiency), in liquid max.
Filtration speed Approx. 150 s (Herzberg)
Ash content 0.06%
Airflow rate 10.5 s/100 ml/in²
Basis weight 88 g/m²
Burst strength 0.29 psi wet burst; 15.99 dry burst
Tensile strength 39.1 N/15 mm Tensile M/D Dry

Product Detail

CY-1001-400

Mfr. Number: 1001-400

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 400 mm

100/PK

CY-1001-734

Mfr. Number: 1001-734

Description: Whatman Grade 1 qualitative filter paper, standard grade, roll, 47 cm × 100 m

1/PK

CY-1001-10048

Mfr. Number: 1001-10048

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 90 mm

5000/CS

CY-1001-10035

Mfr. Number: 1001-10035

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 76.2 mm, 500/PK

500/PK

CY-1001-932

Mfr. Number: 1001-932

Description: Whatman Grade 1 qualitative filter paper, standard grade, sheet, 580 × 680 mm

500/PK

CY-1001-931

Mfr. Number: 1001-931

Description: Whatman Grade 1 qualitative filter paper, standard grade, sheet, 580 × 680 mm

100/PK

CY-1001-918

Mfr. Number: 1001-918

Description: Whatman Grade 1 qualitative filter paper, standard grade, sheet, 460 × 570 mm

500/PK

CY-1001-6508

Mfr. Number: 1001-6508

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 10 mm

500/PK

CY-1001-085

Mfr. Number: 1001-085

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 85 mm

100/PK

CN-1001-824

Mfr. Number: 1001-824

Description: Whatman Grade 1 qualitative filter paper, standard grade, sheet, 75 × 100 mm

500/PK

CY-1001-385

Mfr. Number: 1001-385

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 385 mm

100/PK

CY-1001-813

Mfr. Number: 1001-813

Description: Whatman Grade 1 qualitative filter paper, standard grade, sheet, 26 × 31 mm

1000/PK

CY-1001-929

Mfr. Number: 1001-929

Description: Whatman Grade 1 qualitative filter paper, standard grade, sheet, 600 × 600 mm

100/PK

CY-1001-030

Mfr. Number: 1001-030

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 30 mm

400/PK

CY-1001-500

Mfr. Number: 1001-500

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 500 mm

100/PK

CY-1001-025

Mfr. Number: 1001-025

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 25 mm

400/PK

CY-1001-270

Mfr. Number: 1001-270

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 270 mm

100/PK

CY-1001-020

Mfr. Number: 1001-020

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 20 mm

400/PK

CY-1001-917

Mfr. Number: 1001-917

Description: Whatman Grade 1 qualitative filter paper, standard grade, sheet, 460 × 570 mm

100/PK

CY-1001-320

Mfr. Number: 1001-320

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 320 mm

100/PK

CY-1001-329

Mfr. Number: 1001-329

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 30 mm

100/PK

CY-1001-045

Mfr. Number: 1001-045

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 45 mm

100/PK

CY-1001-047

Mfr. Number: 1001-047

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 47 mm

100/PK

CY-1001-032

Mfr. Number: 1001-032

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 32 mm

100/PK

CY-1001-240

Mfr. Number: 1001-240

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 240 mm

100/PK

CY-1001-0155

Mfr. Number: 1001-0155

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 15 mm

500/PK

CY-1001-150

Mfr. Number: 1001-150

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 150 mm

100/PK

CY-1001-090

Mfr. Number: 1001-090

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 90 mm

100/PK

CY-1001-325

Mfr. Number: 1001-325

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 25 mm

100/PK

CY-1001-185

Mfr. Number: 1001-185

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 185 mm

100/PK

CY-1001-055

Ply. Number: 1001-055

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 55 mm

100/PK

CY-1001-070

Mfr. Number: 1001-070

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 70 mm

100/PK

CY-1001-110

Mfr. Number: 1001-110

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 110 mm

100/PK

CY-1001-042

Mfr. Number: 1001-042

Description: Grade 1 Qualitative Filter Paper Standard Grade, circle, 42.5 mm

100/PK

CY-1001-125

Mfr. Number: 1001-125

Description: Whatman Grade 1 qualitative filter paper, standard grade, circle, 125 mm

100/PK
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