Upper Cooling System; Thermistor Probe; Lower Cooling System - Elitech FreezePoint 6000 Series User Manual

Section 2: Design and Function

Upper Cooling System

Figure 6 Upper Cooling System
WARNING!
Risk of infection from sample residue!
The initiation needle is immersed into the sample during measurements. Contact with the initiation needle
increases the risk of infection.
• Wear lab gloves during any kind of work.

Thermistor probe

Figure 7 Thermistor probe
NOTE!
Sensitive component!
The thermistor of the thermistor probe is a sensitive component and must be protected from external
influences such as dust or friction.
• When performing any kind of work on the device, place a measurement vessel on the thermistor.
• After using the device, place an empty and unused measurement vessel on the thermistor for
protection.

Lower Cooling System

The lower cooling system quickly cools the sample down to a defined temperature which is below the
freezing point of the solution. The quick cooling down of the sample causes the sample to remain in the
liquid state until the defined crystallization is triggered.
1. Initiation needle
2. Cooling pin
The initiation needle (1) of the upper cooling system "seeds" the sample with ice
crystals ("crystallization"). This causes the sample to freeze and heat up to its
freezing point.
1. Thermistor probe
2. Thermistor
The thermistor probe (1) measures the current temperature of the sample via the
thermistor (2). After crystallization has been triggered, the thermistor probe
measures the freezing point of the sample.
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