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思源鼠等同志,先搞清什么叫ppm,在大放厥词~~
*限值的判定、按照附表「限值判定方法(含量计算方法)」、计算出
构成部品的均质材料中的化学物质含量、再与限值比较判定。
*In case of judging by threshold, please refer to another sheet of "Table
2-3 Judgment of Threshold".
)Explanation of Unit "ppm"
*「ppm」为1/1,000,000(百万分之一)。(1ppm=1/1,000,000)(1ppm=1mg/1kg)

例1・・・75mg/1kg(1,000,000mg)的均质材料中含有75mg时为75ppm Example1・・・75mg/1kg(1,000,000mg)= 75ppm
例2・・・0.08%(8/10,000)=800ppm Example2・・・0.08%(8/10,000)=800ppm
例3・・・0.01%(1/10,000)=100ppm Example3・・・0.01%(1/10,000)=100ppm

关于单位ppm (Explanation of Unit "ppm")
ppm是1/1,000,000(百万分之一)。(1ppm=1/1,000,000)
例1:1Kg(1,000,000mg)的材料中含有75mg是、为75ppm(Cd的限值)
Example1:75mg/1Kg(1,000,000mg)= 75ppm (The threshold of Cd.)
例2:0.08%(8/10,000)=800ppm(Cd以外的5类物质的限值)
Example2:0.08%(8/10,000)=800ppm(The threshold of five materials except for Cd.)
例3:0.01%(1/10,000)=100ppm
Example3:0.01%(1/10,000)=100ppm

浓度计算
Put the weight of certain hazardous material contained in the
component into numerator, then calculate Concentration.
以重量比进行计算,如果含量高于含有的判定基准浓度,就是“含有”
If the calculated weight percent is larger than the containing
threshold concentration, it is judged "Containing".
计算例)
如果使用(Sn-37Pb)焊锡、不管焊锡量多少、结果均为含37%的Pb
锡线(1.2gr)中的Pb(5mg)的话、=5/1200=0.41%
(Calculation example)
If the solder(Sn-37Pb)is used, it results in 37%Pb regardless
of the weight of solder.
If the content of Pb is 5mg in the Sleave (1.2gr), it results in
0.41%.

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