A.R. ALATAN SAINS (K) SDN. BHD.

subglobal1 link | subglobal1 link | subglobal1 link | subglobal1 link | subglobal1 link | subglobal1 link | subglobal1 link
subglobal2 link | subglobal2 link | subglobal2 link | subglobal2 link | subglobal2 link | subglobal2 link | subglobal2 link
subglobal3 link | subglobal3 link | subglobal3 link | subglobal3 link | subglobal3 link | subglobal3 link | subglobal3 link
subglobal4 link | subglobal4 link | subglobal4 link | subglobal4 link | subglobal4 link | subglobal4 link | subglobal4 link
subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link | subglobal5 link
subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link | subglobal6 link
subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link | subglobal7 link
subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link | subglobal8 link

FILTER PAPERS

 

CELULLOSE FILTERS (QUALITATIVE)
Brand : Whatman

  • These filters are used in qualitative analytical techniques to determine and identify materials
  • Grade 1 : A medium retention and flow rate filter for routine applications, including soil analysis and seed testing procedures, food industry testing, air pollution monitoring and gas detection.
  • Grade 2 : More absorbent and slightly more retentive with a slower filtration speed than Grade 1. Use for monitoring specific contaminants in the atmosphere and in soil testing.
  • Grade 3 : A thick filter with good loading capacity, fine particle increased strength. The extra thickness give increased wet strength and make the filter suitable for use in buchner funnels. The high absorbency is particularly valuable when the filter is used as a sample carrier.
  • Grade 4 : Offers high flow rate with good retention of larger particles and gelatinous precipitates such as ferric hydroxide and aluminum hydroxide. Also used as a rapid filter for routine cleanup of biological fluids or organic extracts and for rapid air pollution monitoring where collection of fine particles is not critical.
  • Grade 5 : The most efficient qualitative filter. Used for collecting small particles and has a slow flow rate. Suitable for chemical analysis clarifying clodly suspensions, and for water and soil analysis.
  • Grade 6 : Twice as fast as Grade 5 with similar particle retention. Often specified for boiler water analysis.
  • Brand : Whatman, UK
Grade
Typical Thickness
Basis Weight
Flow Rate / Aspect
Particle Retention in Liquid
Grade 1
180 µm
88 g/m²
Medium flow
11 µm
Grade 2
190 µm
103 g/m²
Medium flow
8 µm
Grade 3
390 µm
187 g/m²
Medium flow (Thick)
6 µm
Grade 4
205 µm
96 g/m²
Very fast
25 µm
Grade 5
200 µm
98 g/m²
Slow
2.5 µm
Grade 6
180 µm
105 g/m²
Medium to slow
3 µm
Diameter
Catalog Number
Packing
Grade 1
Grade 2
Grade 3
Grade 4
Grade 5
Grade 6
55 mm
1001-055
1002-055
1003-055
1004-055
1005-055
-
100 pcs
70 mm
1001-070
1002-070
1003-070
1004-070
1005-070
1006-070
100 pcs
90 mm
1001-090
1002-090
1003-090
1004-090
1005-090
1006-090
100 pcs
110 mm
1001-110
1002-110
1003-110
1004-110
1005-110
1006-110
100 pcs
125 mm
1001-125
1002-125
1003-125
1004-125
1005-125
1006-125
100 pcs
150 mm
1001-150
1002-150
1003-150
1004-150
1005-150
1006-150
100 pcs
185 mm
1001-185
1002-185
1003-185
1004-185
1005-185
1006-185
100 pcs
240 mm
1001-240
1002-240
1003-240
1004-240
1005-240
1006-240
100 pcs
270 mm
1001-270
1002-270
-
1004-270
-
-
100 pcs
320 mm
1001-320
1002-320
1003-320
1004-320
1005-320
-
100 pcs

 

 

 

CELULLOSE FILTERS (WET STRENGTHENED QUALITATIVE)
Brand : Whatman

  • Wet strengthened qualitatve filters contain a small quantity of a chemically stable resin to give improved wet strength. This does not intoduce any significant impurities into the filtrate but but because the resins contain nitrogen, these grades should not be used in Kjeldahl estimations.
  • Grade 91 : A general purpose creped filter for less critical routine analysis. Widely use to assay sucrose in cane sugar and within pharmaceutical laboratories for routine filtration.
  • Grade 93 : Widely use in universities, colleges and schools for general laboratory filtration and coarse sample preparation.
  • Grade 113 : A creped filter with high loading capacity and the fastest flow rate of any qualitative grade. This is the thickest flter in the range and is extremely strong. Grade 113 is ideal for use with coarse or gelatinous precipitates.
  • Grade 114 : Half of the thickness of Grade 113, this is very strong filter with a smooth surface for easy recovery of precipitates. It is suitable for coarse or gelatinous precipitates.
  • Brand : Whatman, UK
Grade
Typical Thickness
Basis Weight
Flow Rate / Aspect
Particle Retention in Liquid
Grade 91
205 µm
71 g/m²
Creped
10 µm
Grade 93
145 µm
67 g/m²
Medium
10 µm
Grade 113
420 µm
125 g/m²
Fast (Creped)
30 µm
Grade 114
190 µm
77 g/m²
Fast (Smooth)
25 µm
Diameter
Catalog Number
Packing
Grade 91
Grade 93
Grade 113
Grade 114
90 mm
-
-
1113-090
1114-090
100 pcs
110 mm
1091-110
1093-110
1113-110
-
100 pcs
125 mm
1091-125
1093-125
1113-125
1114-125
100 pcs
150 mm
1091-150
-
1113-150
1114-150
100 pcs
185 mm
1091-185
-
1113-185
1114-185
100 pcs
240 mm
1091-240
-
1113-240
1114-240
100 pcs
270 mm
-
-
-
1114-270
100 pcs
320 mm
-
-
1113-320
-
100 pcs

 

 

 

CELULLOSE FILTERS (ASHLESS QUANTITATIVE)
Brand : Whatman
  • Whatman Quantitative filters are designed for gravimetric analysis and the preparation of samples for instrumental analysis. Whatman ashless filters are produced from high quality cotton linters under carefully controlled conditions. These very pure filters are ideal for a wide range of critical analytical filtration procedures.
  • Grade 40 : General purpose ashless filter. Applications include gravimetric analysis, the filtration of solutions prior to atomic absorption spectrophotometry and in air pollution monitoring.
  • Grade 41 : The fastest ashless filter is recommended for analytical procedures involving large particles or gelatinous precipitates such as iron or aluminium hydroxides. Also used in quantitave air pollution analysis for determining gaseous compounds at high flow rates.
  • Grade 42 : Filter wth the finest particle retention. Typical analytical precipitates include barium sulfate, metastannic acid and finely precipitated calcium carbonate.
  • Grade 43 : A moderately fast filter used for foodstuff analysisi, soil analysis, particle collection in air pollution monitoring and inorganic analysis in the construction, mining and steel industries.
  • Grade 44 : Gives the lowest ash weight for any given disc size. Slightly less efficient for collecting small particles than grade 42 but has a higher flow rate.
  • Brand : Whatman, UK
Grade
Typical Thickness
Basis Weight
Ash
Flow Rate / Aspect
Particle Retention in Liquid
Grade 40
210 µm
95 g/m²
0.007%
Medium
8 µm
Grade 41
220 µm
85 g/m²
0.007%
Fast
20 µm
Grade 42
200 µm
100 g/m²
0.007%
Slow
2.5 µm
Grade 43
220 µm
95 g/m²
0.007%
Medium to fast
16 µm
Grade 44
180 µm
80 g/m²
0.007%
Slow to medium
3 µm
 
Diameter
Catalog Number
Packing
Grade 40
Grade 41
Grade 42
Grade 43
Grade 44
47 mm
1440-047
1441-047
1442-047
-
-
100 pcs
55 mm
1440-055
1441-055
1442-055
-
-
100 pcs
70 mm
1440-070
1441-070
1442-070
-
1444-070
100 pcs
90 mm
1440-090
1441-090
1442-090
1443-090
1444-090
100 pcs
110 mm
1440-110
1441-110
1442-110
1443-110
1444-110
100 pcs
125 mm
1440-125
1441-125
1442-125
1443-125
1444-125
100 pcs
150 mm
1440-150
1441-150
1442-150
1443-150
1444-150
100 pcs
185 mm
1440-185
1441-185
1442-185
1443-185
1444-185
100 pcs
240 mm
1440-240
1441-240
1442-240
-
-
100 pcs
320 mm
-
1441-320
1442-320
-
-
100 pcs

 

 

 

CELULLOSE FILTERS (HARDENED LOW ASH QUANTITATIVE)
Brand : Whatman

  • Whatman Quantitative filters are designed for gravimetric analysis and the preparation of samples for instrumental analysis. Hardened low ash filtersa treated with a strong acid to produce high wet strength and chemical resistance. These filters are particularly suitable for Buchner filtration where the tough smooth surface of the filter makes it easy to recover precipitates.
  • Grade 50 : The hardened surface is virtually free from loose fibers. In the electronic industry, the virtual absense of fiber shedding is utilized in carriers for integrated circuits.
  • Grade 52 : Ideal for use with Buchner funnels or Whatman 3-piece filter funnels.
  • Grade 54 : High wet strength is suitable for vacuum-assisted fast filtration of difficult materials.
  • Brand : Whatman, UK
Grade
Typical Thickness
Basis Weight
Ash
Flow Rate / Aspect
Particle Retention in Liquid
Grade 50
115 µm
97 g/m²
0.015%
Slow
2.7 µm
Grade 52
175 µm
101 g/m²
0.015%
Medium
7 µm
Grade 54
185 µm
92 g/m²
0.015%
Very Fast
22 µm
 
Diameter
Catalog Number
Packing
Grade 50
Grade 52
Grade 54
55 mm
1450-055
-
1454-055
100 pcs
70 mm
1450-070
1452-070
1454-070
100 pcs
90 mm
1450-090
1452-090
1454-090
100 pcs
110 mm
1450-110
1452-110
1454-110
100 pcs
125 mm
1450-125
1452-125
1454-125
100 pcs
150 mm
1450-150
1452-150
1454-150
100 pcs
185 mm
1450-185
-
1454-185
100 pcs
240 mm
1450-240
1452-240
1454-240
100 pcs
320 mm
1450-320
-
1454-320
100 pcs

 

 

 

CELULLOSE FILTERS (HARDENED ASHLESS QUANTITATIVE)
Brand : Whatman

  • Whatman Quantitative filters are designed for gravimetric analysis and the preparation of samples for instrumental analysis. Hardened ashless filters are acid hardened to give high wet strength and chemical resistance with extremely low ash content. The tough surface makes these filters suitable for a wide range of critical filtration procedures.
  • Grade 540 : Frequently used in gravimetric analysis of metals in acid/alkali solutions..
  • Grade 541 : Typical applications include protein determination, cement analysis and the determination of fiber in animal food.
  • Grade 542 : Slow flow rate. Very hard and strong with excellent chemical resistance. Often used in gravimetric metal determinations.
  • Brand : Whatman, UK
Grade
Typical Thickness
Basis Weight
Ash
Flow Rate / Aspect
Particle Retention in Liquid
Grade 540
160 µm
88 g/m²
0.006%
Medium
8 µm
Grade 541
155 µm
82 g/m²
0.006%
Fast
22 µm
Grade 542
150 µm
93 g/m²
0.006%
Slow
2.7 µm
 
Diameter
Catalog Number
Packing
Grade 540
Grade 541
Grade 542
47 mm
-
1541-047
-
100 pcs
55 mm
1540-055
1541-055
1542-055
100 pcs
70 mm
1540-070
1541-070
1542-070
100 pcs
90 mm
1540-090
1541-090
1542-090
100 pcs
110 mm
1540-110
1541-110
1542-110
100 pcs
125 mm
1540-125
1541-125
1542-125
100 pcs
150 mm
1540-150
1541-150
1542-150
100 pcs
185 mm
1540-185
1541-185
1542-185
100 pcs
240 mm
1540-240
1541-240
1542-240
100 pcs
320 mm
-
1541-320
-
100 pcs

 

 

 

GLASSS MICROFIBER FILTERS
Brand : Whatman

  • Whatman glass microfiber filters are manufactured from 100% borosilicate glass and are chemically inert and completely binder free. These depth filters combine fast flow rates with high loading capacity and the retention of very fine particles, extending into the sub-micron range. Glass microfiber filters can be used at temperature up to 500°C and are ideal for use in applications involving air filtration and for gravimetric analysis of volatile materials where ignition is involved.
  • Whatman glass microfiber filters have a fine capillary structure and can absorb significantly larger quantities of water than an equivalent cellulose filter, making them suitable for spot tests and liquid scintillation counting methods. The filters can also be made completely transparent for subsequent microscopic examination.
  • Grade GF/A : Suitable for suspended solids in all types of water and effluent and filtration of particulates in water, algae and bacterial cultures. Also widely used for air pollution monitoring.
  • Grade GF/B : Recommended for concentrated suspensions and retention of small particles. Suitable for suspended solids in industrial effluents, especially at high loading.
  • Grade GF/C : Used in many parts of the world for collection of suspended solids in potable water and natural and industrial waste. Widely used in biochemistry for cell harvesting, liquid scintillation counting and binding assays.
  • Grade GF/D : General purpose membrane prefilter with high loading capacity.
  • Grade GF/F : Suitable for critical applications including enumeration of Salmonella and Pseudomonas Aeroginosa, clarification of protein solution and filtering samples and solvents prior to HPLC. EPA Standard for Toxicity Characteristic Leaching Procedure, Method 1311. Recommended for DNA binding and purification.
  • Grade 934-AH : Specified in standard methods for determining total suspended solids in water, removal of turbidity and filtration of bacterial cultures. Particularly recomended for water pollution monitoring, cell harvesting, liquid scintillation counting and air pollution monitoring.
  • Grade GMF 150 : Unique multilayer glass microfiber filter, with a coarse top layer (10 µm) and meshed with a fine layer of 1 µm or 2 µm/ The ideal prefilter for higher particulate loading capacity with faster flow rates
  • Grade EPM 2000 : Has been developed and produces especially for use in high volume PM-10 air sampling equipment that collect atmospheric particulates and aerosols.It is manufactured from 100% pure borosilicate glass of special purity enabling details chemical analysis of trace pollutants with the minimum of interference or background. Whatman EPM 2000 was selected by the EPA to be the standard filter for use in nationwide network of air samplers. Sheets are individually numbered to faclitate identification.
  • Brand : Whatman, UK
Grade
Typical Thickness
Basis Weight
Air Flow Rate
Particle Retention in Liquid
Grade GF/A
260 µm
53 g/m²
4.3 s/100 ml/in²
1.6 µm
Grade GF/B
675 µm
143 g/m²
12 s/100 ml/in²
1.0 µm
Grade GF/C
260 µm
53 g/m²
6.7 s/100 ml/in²
1.2 µm
Grade GF/D
675 µm
121 g/m²
2.2 s/100 ml/in²
2.7 µm
Grade GF/F
420 µm
75 g/m²
19.0 s/100 ml/in²
0.7 µm
Grade 934-AH
435 µm
64 g/m²
3.7 s/100 ml/in²
1.5 µm
Grade GMF 150
730 µm
139 g/m²
3.1 s/100 ml/in²
1.2 µm
Grade GMF 150
750 µm
149 g/m²
1.5 s/100 ml/in²
2.4 µm
Grade EPM 2000
-
85 g/m²
4.7 s/100 ml/in²
2 µm
         
Diameter
Catalog Number
Packing
Grade GF/A
Grade GF/B
Grade GF/C
Grade GF/D
Grade GF/F
47 mm
1820-047
1821-047
1822-047
1823-047
1825-047
100 pcs
55 mm
1820-055
1821-055
1822-055
1823-055
1825-055
100 pcs
70 mm
1820-070
1821-070
1822-070
1823-070
1825-070
100 pcs
90 mm
1820-090
1821-090*
1822-090
1823-090*
1825-090*
100 pcs
110 mm
1820-110
1821-110*
1822-110
1823-110*
1825-110*
100 pcs
125 mm
1820-125
1821-125*
1822-125
1823-125*
1825-125*
100 pcs
150 mm
1820-150
1821-150*
1822-150
1823-150*
1825-150*
100 pcs
257 mm
-
-
-
1823-257*
1825-257*
100 pcs
* Packing : 25 pcs/box
Diameter
Catalog Number
Packing
Grade 934-AH
Grade GMF 150
(1 µm)
Grade GMF 150
(2 µm)
Grade EPM 2000
47 mm
1827-047
1841-047*
1842-047
1882-047
100 pcs
55 mm
1827-055
-
-
-
100 pcs
70 mm
1827-070
-
-
-
100 pcs
90 mm
1827-090
1841-090**
1842-090
-
100 pcs
110 mm
1827-110
-
-
-
100 pcs
125 mm
1827-125
-
-
-
100 pcs
150 mm
1827-150
-
-
-
100 pcs
* Packing : 40 pcs/box
** Packing : 20 pcs/box

 

 

 

QUARTZ FIBER FILTER
Brand : Whatman

  • Grade QM-A : High-purity quartz (SiO2) microfiber filters are used for air sampling in acidic gases, stacks, flues and aerosols, particularly at high temperatures up to 500° C and in PM-10 testing. Because of the low level of alkaline earth metals, "artifact" products of sulfates and nitrates (from SO2 and NO2) are virtually eliminated. QM-A, sequentially numbered according to EPA standards, is suitable for most applications.
  • Brand : Whatman, UK
Grade
Typical Thickness
Basis Weight
Air Flow Rate
Particle Retention in Liquid
Grade QM-A
450 µm
85 g/m²
6.4 s/100 ml/in²
2.2 µm
         
Diameter
Catalog Number
Packing
Grade QM-A
25 mm
1851-025
100 pcs
37 mm
1851-037
100 pcs
47 mm
1851-047
100 pcs
55 mm
1851-055
100 pcs
90 mm
1851-090
100 pcs

 

 

© 2008 A.R. ALATAN SAINS (K) SDN. BHD.

000webhost logo