Ofite Filter Paper 3.5" (9cm), 2.7um (100/pack)

Ofite Filter Paper 3.5" (9cm), 2.7um (100/pack)

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Whatman #50 is the industry standard for filtration testing.


This filter paper is used in the API, Low Pressure Filter Presses. This filter paper meets the requirements established in API Recommended Practice 13B-1 and 13B-2.


  • Grade: Whatman #50

  • Type: Hardened low ash

  • Particle Retention in Liquid: 2.7 µm

  • Ash Content: 0.015%

  • Water Flow Rate: 10 mL/min

  • Nominal Thickness: 115 µm

  • Basis Weight: 96 g/m2

  • Nominal Air Flow Rate: 144 s/100 mL/in2

  • Diameter: 3.5" (88.9 mm)

  • Thickness: 115 µm

  • Material: High-quality cotton linters

  • Alpha Cellulose Content Minimum: = 98%

  • Package of 100

Shipping rates for environmetal equipment and consumables will be determined at the time of purchase. We offer discounted rates through Purolator, Canpar and local couriers to provide the most economical and efficient shipping.

**Rates vary based on volume and weight**

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