Government Scientific Source

$0~$10(0)
$10~$25(48)
$25~$50(26)
$50~$75(8)
$75~$100(8)
$100~$200(17)
$200~$300(16)
$300~$400(2)
$400~$500(4)
$500~$750(0)
$750~$1000(0)
$1000~$5000(1)
$5000~$10000(1)
$10000~$50000(0)
$50000~$100000(0)
$100000~$3000000(0)

$0~$10(0)

$10~$25(48)

$25~$50(26)

$50~$75(8)

$75~$100(8)

$100~$200(17)

$200~$300(16)

$300~$400(2)

$400~$500(4)

$500~$750(0)

$750~$1000(0)

$1000~$5000(1)

$5000~$10000(1)

$10000~$50000(0)

$50000~$100000(0)

$100000~$3000000(0)

Airflow Rate

13sec./100mL/sq. in.

Basis Weight

87g/m2

140

Application

Sample preparation Microbiological studies Filtration of aqueous solutions

Used to absorb radioactive iodine in air pollution monitoring and in nuclear installations.

Description

Grade 1 Qualitative Filter Paper Standard Grade, circle, 85 mm

Grade 1 Qualitative Filter Paper Standard Grade, circle, 150 mm

802 38.5 cm 100/pk

Grade 2 Qualitative Filter Paper Standard Grade, circle, 42.5 mm

Grade 1 Qualitative Filter Paper Standard Grade, circle, 90 mm

Grade 1 Qualitative Filter Paper Standard Grade, circle, 42.5 mm

Grade 1 Qualitative Filter Paper Standard Grade, sheet, 460 +° 570 mm

Grade 1 Qualitative Filter Paper Standard Grade, circle, 240 mm

Grade 1 Qualitative Filter Paper Standard Grade, circle, 55 mm

Grade 1 Qualitative Filter Paper Standard Grade, circle, 70 mm

Grade 2 Qualitative Filter Paper Standard Grade, circle, 55 mm

Grade 1 Qualitative Filter Paper Standard Grade, circle, 15 mm

Grade 3 Qualitative Filter Paper Standard Grade, circle, 70 mm

Grade 2V Pre-Folded Filter Paper for Qualitative Analysis, 125 mm circle (100 pcs)

Grade 1 Qualitative Filter Paper Standard Grade, circle, 185 mm

Grade 2 Qualitative Filter Paper Standard Grade, circle, 185 mm

Grade 2 Qualitative Filter Paper Standard Grade, circle, 70 mm

Grade 4 Qualitative Filter Paper Standard Grade, circle, 90 mm

Color

White

Diameter Metric

18.5cm

7cm

38.5cm

12.5cm

150 mm

15cm

85 mm

125 mm

33cm

240 mm

4.25cm

185 mm

70 mm

2.5cm

Diameter Metric

42.5 mm

9cm

11cm

15 mm

24cm

55 mm

19cm

5.5cm

90 mm

Dimensions LxW

Ø 185 mm

Ø 42.5 mm

Ø 85 mm

101.6 x 101.6mm (4 x 4 in.)

Ø 55 mm

Ø 90 mm

Ø 150 mm

Ø 15 mm

460 x 570 mm (18.11 x 22.45 in.)

Ø 70 mm

304.8 x 304.8mm (12 x 12 in.)

38.50 cm

Ø 240 mm

Dimensions_1

460 x 570 mm (18.11 x 22.45 in)

Ã˜ 150 mm

Ã˜ 90 mm

Ã˜ 240 mm

Ã˜ 32 mm

Ã˜ 50 mm

Ã˜ 500 mm

46 Ã— 57 cm (18.1 Ã— 22.4 in)

203 x 254 mm

Ã˜ 110 mm

Ã˜ 185 mm

Ã˜ 125 mm

Ã˜ 85 mm

Ã˜ 30 mm

Ã˜ 42.5 mm

Ã˜ 55 mm

Ã˜ 70 mm

Ã˜ 15 mm

Ã˜ 47 mm

Ã˜ 23 mm

Ã˜ 320 mm

Dimensions_29

Ã˜ 110 mm

Ã˜ 15 mm

Ã˜ 23 mm

460 x 570 mm (18.11 x 22.45 in)

Ã˜ 150 mm

Ã˜ 240 mm

Ã˜ 500 mm

Ã˜ 32 mm

Ã˜ 55 mm

Ã˜ 125 mm

203 x 254 mm

Ã˜ 42.5 mm

Ã˜ 70 mm

Ã˜ 85 mm

46 Ã— 57 cm (18.1 Ã— 22.4 in)

Ã˜ 30 mm

Ã˜ 90 mm

Ã˜ 185 mm

Ã˜ 47 mm

Ã˜ 320 mm

Ã˜ 50 mm

Dimensions_33

203 x 254 mm

Ã˜ 42.5 mm

Ã˜ 47 mm

Ã˜ 70 mm

Ã˜ 32 mm

Ã˜ 50 mm

Ã˜ 500 mm

Ã˜ 15 mm

Ã˜ 23 mm

Ã˜ 185 mm

46 Ã— 57 cm (18.1 Ã— 22.4 in)

Ã˜ 110 mm

Ã˜ 90 mm

Ã˜ 55 mm

Ã˜ 125 mm

Ã˜ 150 mm

460 x 570 mm (18.11 x 22.45 in)

Ã˜ 30 mm

Ã˜ 85 mm

Ã˜ 240 mm

Ã˜ 320 mm

Diameter

47 mm

For Use With Application

For use in b++chner funnels.

General purpose: slightly slower, more retentive than P5. Retains MgNH4PO4, silver sulfide, cadmium sulfide. In air monitors, collects particulates and chromic acid mist

Use for coarse particles and gelatinous precipitates.

Used for monitoring specific contaminants in the atmosphere and in soil testing.

Certified for cereal analysis methods. Normal loading capacity, limited wet strength.

Coarse precipitates

General lab uses: clinical and spot testing, clarifying pharmaceuticals

Used filter paper for routine applications with medium retention and flow rate.Covers a wide range of laboratory applications and is frequently used for clarifying liquids.

Ideal for clarifying and removing particles of 1µm and larger, and in applications that do not require a low-ash or ashless paper

Suitable for coarse and gelatinous precipitates. Retains Fe(OH)3, Al(OH)3, metallic sulfides, iron ores. For clarifying solutions, oils. For zinc analysis (Fe ppt removal). Size 19cm (09-804) widely used for sugar analysis.

Filtration Speed (Herzberg)

Approx. 50

Flow Rate

Fast: 160mL/min.

Fast

Slow: 25mL/min.

57mL/min. (water)

Slow: 60mL/min.

Medium

Field of Application

Particle removal (General) Suspended particles (Water microbiology and analysis)

Microfiltration (General) Ultracleaning (General) Mycoplasma removal (Tissue culture)

FiltrationSpeed

37 sec.

150 sec.

ASTM: 90; Herzberg: 325 sec.

230 sec.

55 sec.

5mL/min.

240 sec.

730 sec.

Filtration Speed

230 sec.

240 sec.

730 sec.

150 sec.

5mL/min.

Format

Sheet

Prepleated Circle

Circles

Circle

Format_6

Sheets

Circles

Format

Sheets

Grade

B-2

615

Grade 5

Grade 598

802

Grade 1 Chr

Grade 1

Grade 72

Grade 113

Grade 2V

Grade 520b

Grade 3

Grade 4

P8 Fluted

Grade 2

Grade 93

Hydrophilic

Yes

Grade

Grade 41

Grade Type

Standard

Wet Strengthened

Hydrophobic

Item Description

A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids.

A standard grade filter used in qualitative analytical techniques to determine and identify materials. For use in b++chner funnels.

A prepleated filter for use with a conical filter funnel, offers fast filtration and high loading capacity for analysis involving coarse particles or gelatinous precipitates.

A standard grade filter used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical.

A standard grade filter used for monitoring specific contaminants in the atmosphere and in soil testing.

Compared with quadrant-folded filters, GEG–s Whatman Grade 2V pre-folded filter paper exposes extra surface area, which enables a higher loading capacity and shorter filtration time.

Length Metric

570mm

101.6mm

Material

High-quality cotton linters

Cellulose

Cellulose Nitrate

Parchment paper

Length English

12 in.

Length Metric

46cm

304.8mm

Length English

4 in.

Nominal Ash Content

0.06%

0.01%

Nominal Basis Weight

125

185

100

Nominal Thickness

145

200

180

215

190

210

390

420

Particle Retention

4 to 8µm

5 to 10µm

>25µm

>11µm

1 to 5µm

25µm

>8µm

ParticleRetention

25µm

>25µm

1 to 5µm

>11µm

20 to 25µm

5 to 10µm

>6µm

>8µm

4 to 8µm

Medium Fine

15µm

Coarse particles and gelatinous precipitates

Membrane Type

Plain

PoreSizeMetric

11µm

20 to 25µm

>8µm

Porosity

Medium Fine

Coarse

Nominal Air Flow Rate

7 s/100 ml/inÂ²

4 s/100 mL/inÂ²

13 s/100 ml/inÂ²

20 s/100 ml/inÂ²

26 s/100 ml/inÂ²

96 s/100 ml/inÂ²

2 s/100 ml/inÂ²

Operating Temp Max

80ÂºC

Properties

Very fast, wet strength, extra thick

Medium

Medium fast, thick

Thick

Creped

Pack size

1250 pieces

400 pieces

500 pieces

100 pieces

Pore Size Metric

30 to 35µm

QUANTITY / PACK

100

Porosity

Fine

Medium

Quantity

500Pack

Particle Retention in Liquid Max

Quantity

100/Pk.

Pk. of 100

500/Pk.

100Pack

Pore Size

0.1

Porosity Max

84%

Sterility

Nonsterile

ThicknessMetric

190µm

180µm

210µm

Typical Particle Retention in Liquid

25 Âµm

20Âµm

11 Âµm

30 Âµm

6 Âµm

2.5 Âµm

8 Âµm

10 Âµm

Typical water flow rate

5 ml/min

194 ml/min

28 ml/min

38 ml/min

57 ml/min

774 ml/min

254 ml/min

247 ml/min

Type

Sheets

Ashless

Parchment Paper

Typical Thickness

550

320

Weight Min

3.6 mg/cmÂ²

Width Metric

101.6mm

304.8mm

460mm

Width Metric

57cm

Typical Trace Element Levels

Aluminium 3.6 Âµg/g Antimony <0.5 Âµg/g Arsenic <0.5 Âµg/g Barium <0.5 Âµg/g Boron <1 Âµg/g Calcium 27.5 Âµg/g Chromium 1 Âµg/g Copper 0.9 Âµg/g Iron 13.7 Âµg/g Lead <0.5 Âµg/g Magnesium 21 Âµg/g Manganese <0.5 Âµg/g Mercury <0.5 Âµg/g Potassium 6.2 Âµg/g

Aluminium 2.5 Âµg/g Antimony <0.5 Âµg/g Arsenic <0.5 Âµg/g Barium <0.5 Âµg/g Boron <1 Âµg/g Calcium 8.3 Âµg/g Chromium 1.5 Âµg/g Copper 2 Âµg/g Iron 12 Âµg/g Lead <0.5 Âµg/g Magnesium 4 Âµg/g Manganese <0.5 Âµg/g Mercury <0.5 Âµg/g Potassium 2.3 Âµg/g Sil

Weight Max

5.5 mg/cmÂ²

Thickness

210 µm

390 µm

180 µm

190 µm

0.26mm

Thickness Metric

0.04mm

180µm

190µm

Weight

195 g/mÂ²

Width English

4 in.

Porosity Min

66%

Width English

12 in.

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