Conversion Tables and Diagrams

General Conversion Factors

Inches to mm

Feet to Meter

Meter to feet

bar to psi

psi to bar

psi to KPa

Inches x 2.54 = mm

Feet x 0.3048 = Meter

Meter x 3.281 = Feet

bar x 14.5 = psi

psi x 0.069 = bar

psi x 6.9 = KPa

Lenght Conversion

mm

Inches

Inch

mm

0.064

0.1

0.13

0.18

0.25

0.5

0.75

1

1.4

1.5

2

3

4

4.6

5

6.35

10

12.7

0.0025

0.0039

0.005

0.007

0.010

0.020

0.030

0.039

0.055

0.059

0.079

0.118

0.157

0.181

0.197

0.250

0.394

0.500

1/32”

1/16”

3/32”

1/8”

1/4”

5/16”

1/2”

5/8"

3/4"

1”

12” (1 ft)

0.79

1.59

2.38

3.17

6.35

7.94

12.70

15,88

19,05

25.40

304.80

Temperature Conversion

°C

°F

-40

-30

-20

-10

0

5

10

20

25

30

35

37

40

50

60

70

80

90

100

150

175

200

225

250

300

400

500

750

1000

-40

-22

-4

14

32

41

50

68

77

86

95

98.6

104

122

140

158

176

194

212

302

347

392

437

482

572

752

932

1382

1832

Pressure Conversion

bar

psi

Kpa

Mpa

0,1

0.2

0.25

0.3

0.4

0.5

0.6

0.7

0.75

0.8

0.9

1

2

3

4

5

6

7

8

9

10

20

25

30

40

50

60

70

80

90

100

500

1000

1.5

2.9

3.6

4.4

5.8

7.3

8.7

10.2

10.9

11.6

13.1

14.5

29.0

43.5

58.0

72.5

87.0

102

116

131

145

290

363

435

580

725

870

1015

1160

1305

1450

7250

14500

10

20

25

30

40

50

60

70

75

80

90

100

200

300

400

500

600

700

800

900

1000

2000

2500

3000

4000

5000

6000

7000

8000

9000

10000

50000

100000

0.01

0.02

0.025

0.03

0.04

0.05

0.06

0.07

0.075

0.08

0.09

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

2

2.5

3

4

5

6

7

8

9

10

50

100

Volume Chart

ID in mm

µl / cm

ID in Inch

µl / inch

0.064

0.10

0.13

0.18

0.25

0.50

0.75

1.0

1.4

1.59

0.032

0.078

0.133

0.254

0.49

1.96

4.42

7.85

15.4

19.9

0.0025

0.0039

0.005

0.007

0.010

0.020

0.030

0.039

0.055

0.062

0.08128

0.19812

0.33782

0.64516

1.2446

4.9784

11.2268

19.939

39.116

50.546

Porous Media Particle Retention Efficiency And Poresize Estimates

Media Grade

Calculated Pore Size

Porosity

Liquid Efficiency (µm)

Air Efficiency (µm)

in micron

in micron

% open volume

90.0 %

99.0 %

99.9 %

90.0 %

99.0 %

99.9 %

0.5

1

2

5

10

20

5-8

8-11

14-16

20-25

30-42

55-65

12-16

18-22

20-25

28-32

35-40

45-55

1

1.5

4

5

10

20

1.7

2.2

5.5

8

16

26

2.2

3.3

9

13

20

35

Most Particles

Most Particles

0.3

0.8

4.5

8

0.25

0.35

0.6

2

8

12

0.3

0.7

2

5

13

20

Effect of Temperature on the

Permeability of PTFE (Teflon)

Temperature in Degree Celsius (°C)

Note: Values are averages only and not for special purposes.

Deviations in nominal tubing volume (in

µL/mm) caused by different tolerances

Tubing tolerance +/- 0.075mm (0.003”)

Tubing tolerance +/- 0.05mm (0.002”)

Tubing tolerance +/- 0.025mm (0.001”)

red = 0,25 mm ID

yellow = 0,18 mm ID

green = 0,13 mm ID