Supplies & Consumables

Manufacturer

Dia (mm)

Filter Paper Type

Grade

Pore Size (µm)

Filter Paper

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  • Image of Filter Paper, Qualitative Grade

    Filter Paper, Qualitative Grade

    Designed for general qualitative laboratory work Medium filtering speed; 6 µm particle retention Medium retentivity, which retains medium crystalline precipitates such as aluminum phosphates, barium carbonate and lead chromate Thickness approximately 0.15 mm 6 µm pore size
  • Image of Black Filter Papers

    Black Filter Papers

    A deep black, qualitative paper for filtering light colored sediments, etc. Medium speed Retains crystalline precipitates of medium fineness 6 µm pore size
  • Image of Filter Paper, Qualitative Grade

    Filter Paper, Qualitative Grade

    Designed for very fine precipitates Slow filtering speed; 1 µm particle retention High retentivity, which retains very fine crystalline precipitates such as cuprous oxide, lead sulfate, barium sulfate and manganese carbonate Thickness approximately 0.20 mm, 1.5 µm pore size
  • Image of Filter Paper, Qualitative Grades

    Filter Paper, Qualitative Grades

    Designed for general qualitative laboratory work Fast filtering speed; 24 mm particle retention Low retentivity, which retains coarse or gelatinous precipitates such as aluminum hydroxide, cobalt carbonate, mercury iodide and magnesium hydroxide Creped surface; thickness approximately 0.23 mm; 24...
  • Image of Qualitative Cellulose Filter Papers

    Qualitative Cellulose Filter Papers

    Qualitative cellulose filter papers perform separation by entrapping particulate within the random matrix of cellulose fibers within the depth of the media. This media is widely used in methods requiring the determination and identification of particulate in both liquids and gas. Also, this natural...
  • Image of Quantitative Cellulose Filter Papers

    Quantitative Cellulose Filter Papers

    Quantitative cellulose filter papers are primarily used in gravimetric analysis procedures and perform separations by entrapping particulate within the random matrix of cellulose fibers within the depth of the media. This media family is also widely used in methods to prepare samples for further...
  • Image of Qualitative Filter Papers, Grade No. 1

    Qualitative Filter Papers, Grade No. 1

    Most widely used general purpose laboratory filter paper Medium retention, 11 µm, medium - fast flow rate, smooth surface Clarifies liquids in routine laboratory applications and for air pollution monitoring. Used in air monitors to collect atmospheric dust for assessment of stain intensity. Also...
  • Placeholder Image for Qualitative Filter Papers, Grade No. 4

    Qualitative Filter Papers, Grade No. 4

    Fast filtering with excellent retention of coarse particles and gelatinous precipitates Compliments No. 1 for air pollution monitoring when high flow rates are important Low retentivity, 20-25 µm Used as a rapid filter for clean-up of biological fluids or organic extracts during analysis.
  • Image of No. 41 Quantitative Ashless Paper

    No. 41 Quantitative Ashless Paper

    Fast filtration of coarse or gelatinous precipitates (20-25 µm particle retention) Acid washed, ash content 0.007% Especially suitable for iron or aluminum hydroxides; rough surface Widely used in determining silicon in iron and steel analysis Used for quantitative air pollution analysis when...
  • Image of No. 42 Quantitative Ashless Paper

    No. 42 Quantitative Ashless Paper

    Suitable for precipitates that are ordinarily difficult to filter (2.5 µm particle retention) Acid wash, ash content 0.007% Highly retentive for very fine analytical precipitates, such as barium sulfate or metastannic acid Recommended for use with vacuum
  • Image of Hardened Ashless No. 541 Quantitative Paper

    Hardened Ashless No. 541 Quantitative Paper

    Very fast filtration to retain coarse or gelatinous precipitates (20-25 µm particle retention) Double acid wash, ash content 0.006% Useful in the intermediate stages of gravimetric analysis under strong acid or alkaline conditions Exceptionally high wet strength allows repeated washings; hardened...
  • Image of Hardened Low Ash No. 50 Quantitative Papers

    Hardened Low Ash No. 50 Quantitative Papers

    Retention of the finest crystalline precipitates (2.7 microns) Hardened and highly glazed surface; low ash .0015% Slow flow rate Tough, resistant to pressure, withstands repeated use Precipitates can be scraped off without injury to surface
  • Image of Hardened Low Ash No. 54 Quantitative Papers

    Hardened Low Ash No. 54 Quantitative Papers

    Recommended when a strong, alkali-resistant, fast filtering paper is required (20-25 µm) Low ash, hardened paper Very fast filtration for use with coarse and gelatinous precipitates Used for filtering ferric hydroxide and silica; smooth surface
  • Image of No. 1ps, Phase Separator Paper

    No. 1ps, Phase Separator Paper

    Water-repellent to retain aqueous solutions while allowing organic solutions to pass through Silicone treated for water repellency Effects separations of immiscible aqueous and organic solvent mixtures; not suitable for emulsions Complete recovery of organic phase solute from paper is achieved by...
  • Image of No. 40 Quantitative Ashless Paper

    No. 40 Quantitative Ashless Paper

    Most widely used general purpose gravimetric filter paper; acid washed, ash content 0.007% Medium speed and retention (8 µm); rough surface Used for calcium oxalate, silica in steel and well-digested barium sulfate; as a high-purity filter in the collection of trace elements and radionuclides in...
  • Image of No. 43 Quantitative Ashless Paper

    No. 43 Quantitative Ashless Paper

    Intermediate in retention and flow rate between No. 40 and No. 41 (16 microns) Medium retention and medium flow rate Double acid washed, ash 0.01%
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