CEM MARS 6 User Manual

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Easy Prep and Xpress Vessel Cleaning
1. Place 10 mL of acid used in digestion methods in each vessel to be cleaned.
2. Seal each vessel as outlined in the appropriate vessel documents.
3. Select the appropriate One Touch Method for the vessels (EasyPrep Clean or Xpress Clean). The MARS 6
instrument will perform the vessel cleaning.
ESP-1500 Plus Cleaning
1. Prepare a 60cc syringe fitted with a 7” length of 0.060” diameter Teflon tubing.
2. Remove the pressure line from the ESP-1500 Plus.
3. Fill the syringe with 20mL of deionized water. Insert the tubing attached to the syringe into the ESP-1500 Plus
until it touches the bottom of the pressure fitting.
4. Ensuring that the ESP-1500 Plus is placed so that any excess water will be safety contained, flush the ESP-1500
Plus with the entire 20mL of deionized water.
5. Remove the tubing and syringe from the ESP-1500 Plus. Fill the syringe with air.
6. Reinsert the tubing into the ESP-1500 Plus. To assist in removing the excess water, use the syringe to push the
air into the ESP.
Microwave Leakage Measurement
1. The door and cavity are very durable and are designed for reliable operation under severe laboratory conditions.
External radiation checks are performed on the MARS 6 at several points in the manufacturing process, ensuring
that leakage from the finished instrument is only a fraction of that allowed by U.S. law (5 mW/cm2).
2. The door of the MARS 6 is equipped with a safety interlock system which stops the generation of microwave
energy when the door is opened or ajar. If the interlock system fails, a monitoring mechanism will blow the fuse(s)
through which power is supplied to the magnetron, rendering the microwave power system inoperable.
3. To verify that door seals and interlocks are working properly, the MARS 6 should be tested periodically for
microwave leakage. Use the following procedure to measure microwave leakage:
a. Create a method using a beaker as the selected vessel, 1800 watts, 100% power, 2 minutes ramp time, 0
pressure, 240°C temperature, stirrer off, and 0 hold time, naming it “Leak Test.” Save the method.
b. Place a beaker containing 100mL of water in a vessel position of the turntable.
c. Select the created method and press “Start” to begin the method.

CEM MARS 6 Specifications

General

Type	Microwave Digestion System
Power Output	1600 W
Temperature Control	Yes
Pressure Control	Yes
Vessel Capacity	up to 40 vessels
Display	Touchscreen
Operating Pressure	up to 800 psi
Temperature Range	up to 300°C
Temperature Accuracy	± 1 °C
Power Supply	220-240 V, 50/60 Hz
Safety Features	Over-temperature and over-pressure protection
Power Consumption	1600W
Cooling Rate	Forced air cooling