Instruction Manual: Thermal Vaporization Mercury Analyzer MA-3
Solo
NIC-TD-0000090-15
28
Nippon Instruments Corporation
Warning
When touching a mercury collector tube or a heat-resistant container,
make sure that it has been cooled sufficiently.
When handling, put on protectors such as heat-resistant gloves, and
use boat tongs.
Otherwise, you may get burned.
Before using a mercury collector tube for gas measurement, heat-treat it using an
electric furnace or the like to lower the blank value.
* Do not use a mercury collector tube that has discolored wool even after the procedure
described below.
The capability to collect mercury may have decreased.
(1)
Wipe off dirt on a mercury collector tube.
Wipe the inside using a swab or the like soaked with a little ethanol.
(2)
Put mercury collector tubes on a heat-resistant ceramic pan or the like, and heat
them at 700
C for 30 minutes or more using an electric furnace.
* Take care because quartz tubes may break easily because of devitrification if
sodium, calcium or the like adheres to them.
(3)
When the temperature in the electric furnace has lowered and it is possible to take
out the tubes, take them out using a flat trowel, tongs or the like while protecting
yourself using heat-resistant gloves or the like, and cool the tubes.
* Take sufficient care not to get burned, and follow the instruction manual of the
electric furnace when taking out the tubes.
* If a heat-resistant ceramic pan is cooled rapidly, it may break.
(4)
Leave the tubes to cool them sufficiently and then retain them in an airtight container.
(5)
Conduct a sampling inspection and check a blank value. (An inspection of one out
of 10 tubes is recommended.)
Summary of Contents for MA-3 Solo
Page 7: ......
