CB (E7) 06/2018 Page 159/174
25.3 Definition of usable volume
The usable volume illustrated below is calculated as follows:
A, B, C = internal dimensions (W, H, D)
a, b, c = wall separation
a = 0.1*A
b = 0.1*B
c = 0.1*C
V
USE
= (A - 2 * a) * (B - 2 * b) * (C - 2 * c)
Figure 30: Determination of the usable volume
The technical data refers to the defined usable volume.
Do NOT place samples outside this usable volume.
Do NOT load this volume by more than half to enable sufficient airflow inside the chamber.
Do NOT divide the usable volume into separate parts with large area samples.
Do NOT place samples too close to each other in order to permit circulation between them
and thus obtain a homogenous distribution of temperature, CO
2
, O
2
(chamber with O
2
control)., and humidity.
25.4 CB technical data
Depth plus door handle, I-triangle
Depth plus power connection and gas
connection
mm / inch 10 / 0.39 10 / 0.39 10 / 0.39
Wall clearance rear (minimum)
Wall clearance side (minimum)
Quantity of inner doors (inner glass door or
1 1 1
Quantity of individual inner glass doors
(with divided inner door)
4 6 8