Measurement Example of Environmentally Restricted Substances

Measurement of Print Circuit Boards (PCB)

As a recent trend, Halogen free is getting standard as well as RoHS and ELV directives. The well known Halogen free compliance can be non-use of Br as flame retardant. SEA1200VX is capable of measurement of small amount of Cl in resin as well as Br.

[ Halogen Free in Resin Products ]

In addition to RoHS and ELV directives, halogen free products are also now being sought. A typical example is limits on the use of bromine compounds such as fire retardants. The SEA1200VX is able to measure, in addition to Br compounds, small amounts of chlorine contained in resin in conformance to conventional RoHS directives.

[ Measurement of Small amount of Chlorine (Cl) in Resin ]

If a sample contains approximately 70ppm chlorine, we know that quantitative analysis is performed with good repeatability from a CV value of 3.6% for 10 repetitions, as the straight line in the figure below shows.
< Measurement Conditions (SEA1200VX) >
Meas. Time (sec) : 100 Filter : for Cl
Collimator : φ8.0mm Mylar : Film
Voltage (kV) : 15 Atmosphere : Vacuum
Current (µA) 545 Peaking Time : 1.0usec
< PCB　Epoxy Resin Measurement >
  Cl Concentration (ppm)
# of measurement 10
Ave. 66.9
Range 7
STDEV 2.4
CV(%) 3.6
Cl Cal Curve in Vacuum

To Top close