Christ ALPHA 1-2 LDplus - 3. Description of the Freeze Drying Processes; 3.1. Separate Freezing and Drying Outside the Ice Condenser Chamber (Process B) on Shelves

Operating Manual Freeze Dryer ALPHA 1-2 LDplus General Information on Freeze Drying • 11
Conversion table "Vapor pressure above ice" (sublimation
curve)
Pressure units: 1mbar = 100Pa
1Pa = 0.01mbar
Temperature units:
273
+
=
tT
273
−
=
Tt
328.1
+
⋅
=
tt
F
8.1
32
−
=
F
t
t
T = thermodynamic temperature K (Kelvin)
t = temperature in degree Celsius °C
t
F
= temperature in degree Fahrenheit °F
°C
mbar
°C
mbar
°C
mbar
°C
mbar
0 6.110 -20 1.030 -40 0.120 -60 0.011
-1 5.620 -21 0.940 -41 0.110 -61 0.009
-2 5.170 -22 0.850 -42 0.100 -62 0.008
-3 4.760 -23 0.770 -43 0.090 -63 0.007
-4 4.370 -24 0.700 -44 0.080 -64 0.006
-5 4.020 -25 0.630 -45 0.070 -65 0.0054
-6 3.690 -26 0.570 -46 0.060 -66 0.0047
-7 3.380 -27 0.520 -47 0.055 -67 0.0041
-8 3.010 -28 0.470 -48 0.050 -68 0.0035
-9 2.840 -29 0.420 -49 0.045 -69 0.0030
-10 2.560 -30 0.370 -50 0.040 -70 0.0026
-11 2.380 -31 0.340 -51 0.035 -71 0.0023
-11 2.170 -32 0.310 -52 0.030 -72 0.0019
-13 1.980 -33 0.280 -53 0.025 -73 0.0017
-14 1.810 -34 0.250 -54 0.024 -74 0.0014
-15 1.650 -35 0.220 -55 0.021 -75 0.0012
-16 1.510 -36 0.200 -56 0.018 -76 0.0010
-17 1.370 -37 0.180 -57 0.016 -77
-18 1.250 -38 0.160 -58 0.014 -78
-19 1.140 -39 0.140 -59 0.012 -79