Eppendorf IsoTherm-System 3880 - Handbuch (Seite 5)

5
Instructions for use
1.2.1 Dwell time
For the cool packs 0.5 ml or 1.5/2.0 ml the dwell time (IsoTherm time) has been
calculated for 3 use cases each (see measurement in the table):
•
Insulating box with cover (a)
•
Open insulating box (b)
•
Cool pack and tube holder on the tube holder cover (c)
¹ Framework conditions for measuring the IsoTherm time:
•
Maximum filling of the tube holder.
•
Micro test tubes filled to the maximum.
•
Environment at room temperature, system at rest.
•
Measurement of the sample temperature.
² For IsoPack 1.5/2.0 ml: only valid for central bore holes.
Use
case¹
a b c
Pack
version
0 °C to
4 °C
(white)
-21 °C to
18 °C
(blue)
0 °C to
4 °C
(white)
-21 °C to
-18 °C
(blue)
0 °C to
4 °C
(white)
-21 °C to
-18 °C
(blue)
IsoTherm
time
>6 h >3 h >4 h >1 to 2 h > 1.5 to 3 h > 0.5 to 1 h²
Sample temperature
Cold pack 0 °C
Cold pack –21 °C
T (°C)
t (h)
+12
+8
+4
0
0 1 2 3 4 5 6 7 8 9
–4
–8
–12
–16
–20
–24