Technical Information : Laboratory Conversion Factors
UNITS OF MEASURE CONVERSION FACTORS
Percent
Parts per Million
Parts per Billion
Parts per Trillion
.001%= .0001%=
10 ppm
-
-
1 ppm= .1 ppm=
1,000 ppb= 100 ppb= 10 ppb= 1 ppb= .1 ppb= .01 ppb= .001 ppb=
1.000,000 ppt 100,000 ppt
.00001%= .000001%=
.01 ppm= .001 ppm= .0001 ppm=
10,000 ppt 1,000 ppt
- - - -
100 ppt 10 ppt
- -
1 ppt
Percent
Parts per Million
Parts per Billion
centi milli micro nano
10 -2 10 - 3 10 -6 10 -9 10 -12 10 -15 10 -18
1/100 (part per hundred) 1/1,000 (part per thousand)
1/1,000,000 (ppm, part per million) 1/1,000,000,000 (ppb, part per billion) 1/1,000,000,000,000 (ppt, part per trillion)
pico
femto
1/1,000,000,000,000,000 (ppq, part per quadrillion) 1/1,000,000,000,000,000,000 (part per quintillion)
atto
PARTICLE SIZE
Sieve Opening
Sieve Opening
Sieve Opening
Sieve “Mesh”
Sieve “Mesh”
Sieve “Mesh”
in
mm
μm
in
mm
μm
in
mm
μm
1
1.00
25.4 22.6 19.0 15.9 13.5 12.7 11.1 9.53 7.92 6.73 6.35 5.66 4.75 3.99 3.35
25400 22225 19050 15875 13462 12700
7 8
0.111
2.82 2.38 2.00 1.68 1.41 1.19 1.00
9.4
70 80
0.0083 0.0070 0.0059 0.0049 0.0041 0.0035 0.0029 0.0025 0.0021 0.0017 0.0015 0.0008 0.0004 0.0002
0.211 0.178 0.150 0.125 0.104 0.089 0.074 0.064 0.053 0.043 0.038 0.020 0.010 0.005
210.82
7/8 3/4 5/8
0.875 0.750 0.625 0.530 0.500 0.438 0.375 0.312 0.265 0.250 0.223 0.187 0.157 0.132
0.0937 0.0787 0.0661 0.0555 0.0469 0.0394 0.0331 0.0278 0.0234 0.0197 0.0165 0.0139 0.0117 0.0098
2379.98 1998.98 1678.94 1409.7 1191.26 1000.76 840.74 706.12 594.36 500.38
177.8
10 12 14 16 18 20 25 30 35 40 45 50 60
100 120 140 170 200 230 270 325 400 625
149.86 124.46 104.14
.530
1/2
88.9
7/16
11125.2
73.66
3/8
9525
0.841 0.706 0.594 0.500 0.420 0.353 0.297 0.249
63.5
5/16 .265
7924.8
53.34 43.18
6731 6350
1/4
38.1
3 1/2
5664.2 4749.8 3987.8 3352.8
419.1
20.32 10.16
4 5 6
353.06 297.18 248.92
1250 2500
5.08
TEMPERATURE CONVERSION FORMULAS
℃ to ℉
℉ to ℃
( ℃ⅹ 9/5) + 32 = ℉
( ℉ -32) ⅹ 5/9 = ℃
WEIGHT CONVERSION TABLE
From/To
g
kg
ton
grain
oz( 온스 )
lb
돈
근
관
g
1
0.001
0.000001
15.432 15432
0.03527 33.273
0.0022 2.20459 2204.59 0.00014 0.06525
0.26666 266.666 266666 0.01728
0.00166 1.6666 1666.6 0.00108 0.0473
0.000266 0.26666 266.666 0.000017 0.00756 0.12096
kg
1000
1
0.001
ton
1000000 0.06479 28.3495 453.592
1000
1
-
35273
grain
0.00006 0.02835 0.45359 0.00375
-
1
0.00228
oz
0.000028 0.00045 0.000004 0.0006 0.00375
437.4 7000
1
7.56
lb
16
1
120.96
0.756
3.75 600 3750
57.872
0.1323 21.1647 132.28
0.00827 1.32279 8.2672
1
0.00625
0.001
돈 근 관
0.6
9259.556
160
1
0.16
3.75
57872
1000
6.25
1
941
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