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Filter Series

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Filter Papers:​

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  • Qualitative Filter Paper

  • Quantitative Filter Paper

  • Qualitative Filter paper

Qualitative filter papers are used in applications where routine separation is required to determine and identify materials. V-Kards provides an extensive range of filers to meet your specifications.

  • VKAFG001- (Grade 1): The most widely used filter paper for routine applications with medium retention and flow rate.

  • VKAFG002- (Grade 2): This grade is slightly more retentive and absorbent than Grade 1 with an increase in filtration time.

  • VKAFG003- (Grade 3): This grade is double the thickness of Grade 1 with still finer particle retention and excellent loading capacity; more precipitate can be held without clogging.

  • VKAFG004- (Grade 4): This grade is Extremely fast filtering with excellent retention of coarse particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide.

  • VKAFG005- (Grade 5): This grade is Capable of retaining the fine precipitates encountered in chemical analysis.

  • VKAFG006- (Grade 6): This grade is twice as fast as Grade 5 with similar fine particle retention. Often specified for boiler water analysis applications.

Below are some technical details about our products.

  • Quantitative Filter Paper

Quantitative Filter Papers are used for quantitative and gravimetric analyses where the precipitate is to be recovered, as well as for pressure or vacuum filtration.

  • VKAFG011- (Grade 11): This grade is used for coarse and voluminous precipitates such as iron - aluminum - and chromium hydroxide or Si determination in steel and pig iron analysis.

  • VKAFG040- (Grade 40): This grade is used as general-purpose ashless filter paper with medium speed and retention.

  • VKAFG041- (Grade 41): This grade is the fastest ashless filter paper, recommended for analytical procedures involving coarse particles or gelatinous precipitates.

  • VKAFG042- (Grade 42):  A world standard for critical gravimetric analysis with the finest particle retention of all filter papers.

  • VKAFG043- (Grade 43):  It has retention between VKAFG040 and VKAFG041, and is twice as fast as VKAFG040.

  • VKAFG044- (Grade 44):  Thin version of  VKAFG042  retaining very fine particles but with lower ash weight and nearly twice the flow rate of  VKAFG042.

Below are some technical details about our products.

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