Your Trusted Filters Provider!

Whatman Equivalent Filter Paper

Whatman Equivalent Filter Paper

For many years filter paper has been widely accepted as one of the most versatile filter media available. Due to a basic formulation of cellulose fibers in random matrix, it has good dirt holding capacity and can be used for a wide range of applications.

Filtration is a technique used for two main purposes. The first is to separate solid impurities from a liquid. The second is to collect desired solid from the solution from which it was precipitated or crystallized. Several methods of filtration are commonly used. In laboratory, two general methods used are, gravity filtration and vacuum (or suction) filtration.

service-detail-1

In gravity filtration the solution to be filtered is passed through a filter paper held in the funnel allowing gravity to draw the liquid through the paper. Vacuum or suction filtration is more rapid than gravity filtration. In this method a receiver flask with a side nozzle known as filter flask is used. The side nozzle is connected to heavy walled rubber tubing to a source of vacuum.

Qualitative Filter Paper

SS Filters qualitative filter paper is generally used for qualitative chemical analysis, relevant to solid/liquid separation. Qualitative filter paper can be divided in to fast, medium and slow speed when measured by filtering speed and separation performance.

It is widely used in general laboratory filtration, liquid clarifications and analytical separation.

Quantitative Filter Paper

SS Filters quantitative filter paper is mainly used for quantitative chemical analysis. They perform separation by trapping the particulates within the random matrix of cellulose fibers located in the depth of the media. These ashless filter papers are manufactured from ultra refined alpha cellulose filter media. They are acid washed and finally cleaned with ultrapure water. They have extremely low ash content (<0.01%) and good wet strength.

The basic chemical properties of qualitative and quantitative filter paper are given in table.

SS Filter paper is at par with other known brands offering good price advantage without compromising on quality.

QUALITATIVE FILTER PAPER

TEST RESULTS BETWEEN WHATMAN, GERMAN AND SS FILTER PAPER TECH BRIEF
Qualitative Filter paper SS 101 SS 102 SS 103
Item Whatman No.4 German Paper SS 101 Whatman No.1 German Paper SS 102 Whatman No.5 German Paper SS 103
Basic Weight ( GSM) 90 81.5 78 95 81 82.5 84.7 81.8 78.8
Whiteness ( %) 88.6 90.1 85.6 88.9 89.7 85.9 88.6 88.6 88.8
Bursting Strength ( KP) 95 120 114 146 148 129 89 146 152
Wet Bursting Strength ( KP) 220 280 224 220 290 266 200 280 242
Ash Contents ( %) 0.102 0.0435 0.127 0.1445 0.0438 0.139 0.132 0.0411 0.181
Filter Speed ≤ 40 28.5 33 51 63.2 67 94 79.5 79

QUANTITATIVE FILTER PAPER

TEST RESULTS BETWEEN WHATMAN, GERMAN AND SS FILTER PAPER
Qualitative Filter paper SS 101 SS 102 SS 103
Item Whatman No.41 German Paper SS 201 Whatman No.40 German Paper SS 202 Whatman No.42 German Paper SS 203
Basic Weight ( GSM) 82 83.5 79 72.5 84 81.2 84.7 81.2 80.3
Whiteness ( %) 88.6 90.3 85.6 88.9 86.7 85.9 88.6 89.4 88.8
Bursting Strength ( KP) 112 121 114 129 128 139 119 146 152
Wet Bursting Strength ( KP) >350 >350 224 > 350 >350 266 >350 >350 242
Ash Contents ≤( %) 0.029 0.0137 0.0087 0.0445 0.0246 0.0091 0.032 0.0183 0.0083
Filter speed ≤ (S) 41 21.3 31 45 49.8 62 94 130.7 82

TECHNICAL DATA OF CHEMICAL ANALYSIS FILTER PAPER

ITEMS UNIT Qualitative Filter Paper Quantitative Filter Paper
    FAST SPEED MEDIUM SPEED SLOW SPEED FAST SPEED MEDIUM SPEED SLOW SPEED
    No. 101 No. 102 No. 103 No. 201 No. 202 No. 203
Basic weight GSM 80 80 80 80 80 80
Precipitate   Coarse and gelatinous precipitate Crystalline Fine Crystalline Coarse and Gelatinous Precipitate Crystalline Fine Crystalline
Filter speed (S) 35 70 140 35 70 140
Ash Content % 0.15 0.15 0.15 0.01 0.01 0.01
Fe Content % 0.003 0.003 0.003 0.003 0.003 0.003
Water extracts PH 6.5- 7.5 6.5- 7.5 6.5- 7.5 5-8 5-8 5-8
Pore size µm 20 -25 15-20 15-18 20-25 15-20 15-18
Water Soluble Chloride % 0.02 0.02 0.02 0.02 0.02 0.02
Similar to Whatman brand   No.4 No.1 No.5 No.41 No.40 No 42 No.44
  Size Size
  60X60cm Diameter of Circular Filter Paper : 70,90,110,125,150,180MM We can supply other specifications according to the requirement of customers. 40X40cm Diameter of Circular Filter Paper : 70,90,110,125,150,180MM We can supply other specification according to the requirement of Customers.