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                                   ???????????
                                                                                       GB 9644?88
??????PVC-U????????????????????????

???????????ISO 6992??1986???????PVC-U?????????????????????ISO 3114??1977???????????????????????????????
1 ?????????
????????????PVC-U??????????????????????
??????????????????PVC-U?????????
2 ??
??????????????????????????????????????????????????
?????????????????????
???0.01mg/l????0.001mg/l?
???0.005mg/l????0.0005mg/l?
3 ????
3.1 ?????????????????????
3.2 ???????????????
3.3 ??????
4 ???????
?????????????????pH???4.5±0.1?
???????????????????
5 ?????
5.1 ?????????????????????500mm????????????????????????
5.2 ????????????????????????????????????????????
6 ????
6.1 ????
6.1.1 ?????????????????????????????
6.1.2 ?????????????
6.1.3 ??????????????????????????????3m/min?
6.1.4 ????60±10min?????????????????????
6.2 ????
??????6.1??????????????????????????????
6.3 ????
6.3.1 ????????????
6.3.2 ?????????????????20±2??????48h?????????????????????????????
6.3.3 ??????????????????20±2??????48h??????????????????????????????
6.3.4 ?????????????????????????????
???????????????????????
7 ??????
7.1 ?
????????????????????????????????mg/L??????0.02mg/L?
7.2 ?
??????????????????????.???mg/L??????0.004mg/L?
7.3 ?
?????????????????????.???mg/L??????0.005mg/L?
7.4 ?
?????????????????????.???mg/L??????0.0005mg/L?
8 ???
8.1 ?
?????????????1.04mg/L?
?????????????0.3mg/L?
8.2 ?
?????????????0.02mg/L?
8.3 ?
???????????????0.01mg/L?
8.4 ?
???????????????0.001mg/L?
9 ????
????????????
a. ???????????????????
b. ????????
c. ?????
d. ?????????????????????????????????????????
e. ????????

 
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