Filter Paper Whatman, Grade 4, 12.5 cm/125 mm

SKU: 1004125

$34.15

Filter Paper, Whatman Grade 4 Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide.

  • Very useful as a rapid filter for routine clean-up of biological fluids or organic extracts during analysis.
  • Used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

Multiple Uses
Material Testing:

  • Agriculture: It is used for soil analysis and seed testing procedures. Primarily for the Corrosion Series in testing chloride.
  • Food Industry: It is used for numerous routine techniques to separate solid foodstuffs from associated liquid or extracting liquid and is widely used in education for teaching simple qualitative analytical separations.
  • Air Pollution Monitoring: Using circles or rolls, atmospheric dust is collected from airflow and the stain-intensity measured photometrically.
  • Gas Detection: The paper is impregnated with a chromogenic reagent and color formation quantified by optical reflectance.

Each Package Contains Grade 4 circles, 12.5 cm/125 mm, 100/pk

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