MILESTONE
USER MANUAL
MA133-004 Ethos One User Manual III
SAFETY
Your personal safety is of the utmost importance for us, therefore, the precautions
necessary to perform chemistry under these conditions must be strictly followed. All
procedures also apply to synthesis procedures. Any and all persons involved in the use of
this equipment must read the following precautions.
1. External fire protection should be installed according to local regulations for equipment operating
unattended.
2. If materials inside the equipment should ignite, keep the cavity closed, switch off the equipment
and disconnect the power cord or turn off the power at the fuse or circuit breaker.
3. Do not label or use metal objects of any kind in or on the vessels as arching and cracking may
occur.
4. It is inadvisable to use some reagents (e.g. triethyl orthoformate) in high temperature microwave
chemistry because of the risk of explosion associated with their chemical properties. Please
consult MSDS data sheets for the specific properties of each chemical before use.
5. Reactions in which there may be a risk of explosion or that are extremely exothermic should not
be performed with the system.
6. The system is a closed vessel system; specific precautions have to be applied to reactions or
reagents that release gases, e.g. decarboxylations or ammonium hydroxide, respectively. Low
concentrations and temperatures are recommended for this type of reaction.
7. Chemicals whose behaviors are unknown when exposed to microwave heating must be treated
with caution e.g. test the reaction at lower temperatures and lower concentrations, use shorter
reaction times and perform the reaction in a fume hood with the window closed.
8. Chemicals that absorb microwave energy well and that are not mixed properly in the reaction
mixture may cause damage to the process vial. Examples are palladium on carbon or
polyphosphoric acid. These chemicals can melt the vial if present on dry pieces adhering to the
glass wall outside of the reaction mixture so it is important to check that they are contained within
the reaction mixture.
9. The equipment shall not be used for heating and ventilation of laboratories. The equipment shall
not be used as a sterilizing equipment.
10. The equipment shall not be used as a medical electrical equipment. The equipment shall not be
used for heating food and beverages. The equipment shall not be used for mass production. The
equipment shall not be used in an explosive atmosphere.
11. The equipment shall only be operated indoors, where the altitude does not exceed 2,000 meters
(1,242 feet), at temperatures between +5°C and +40°C +(41°F and +104°F). The maximum
relative humidity is 80% for temperatures up to 31°C (87.8°F) decreasing linearly to 50% relative
humidity at 40°C (104°C).
12. The equipment shall be operated in places where fluctuations of the main supply voltage are not
exceeding values of 1.10 times the nominal voltage and are not below 0.90 times the nominal
voltage. The equipment shall only be operated in places where transient overvoltages on the main
supply are not exceeding values of overvoltage category II specified in IEC 60364-4-443.
13. The equipment shall only be operated in places where normally only non-conductive pollution
occurs and occasionally, however, a temporary conductivity caused by condensation may occur.
The equipment shall not be stored or operated in places where special conditions prevail, such as
the presence of a corrosive or explosive atmosphere (dust, vapor or gas).
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