天气预报15天查询> 其他> 蜜蜡怎么辨别真假

蜜蜡怎么辨别真假

更新时间: 2020-11-08 00:00:00     

刮痕鉴定,用刀尖轻刮蜜蜡表面,手指摸下发现手上吸附很多粉末为真蜜蜡,紫外线鉴定,琥珀和蜜蜡在紫外线下会呈现天蓝色荧光反应效果。

针烧鉴定,只能在蜜蜡隐蔽处实验,将针加热至红,烫在蜜蜡隐蔽处会产生黑烟,有松香味,被烫处成为灰烬则为真蜜蜡。

比重鉴定,天然蜜蜡在清水中会下沉,在盐水比例1:4的盐水溶液中会上浮。假的会浮在清水中。化学药剂测试鉴定,不会溶于有机溶剂的为真蜜蜡。

关键词: 怎么 辨别 真假

如有意见、反馈、侵权或投诉等情况,请联系:

电话:
邮箱:

我们将会在48小时内给与处理!

版权所有 Copyright ? 2009-2020 tianqiyubao3.com

页面:/news/view-660408/ | 耗时:0.3479 s | 内存:1.89 MB | 查询:4 | 缓存读取:4 写入:0 | 加载文件:23
select * from tbl_Articles WHERE ArticleID=660408 LIMIT 0,1
select * from tbl_Articles_data WHERE ArticleID=660408 LIMIT 0,1
select * from tbl_Articles_sphinx where id=660408 LIMIT 0,1
SELECT ArticleID,Title FROM tbl_Articles WHERE ArticleID IN(1129153,1118925,1111340,1102150,1088561,1125153,1043507,1063263,313972,1129751,1131263,1064831,1055726,1065181,1132145,1070374,1070004,1103724,1094949,1047229,1102348,1074851,1115125,1084893,1123691,1122619,1129543,1067591,1112943,964762) ORDER BY field (ArticleID,1129153,1118925,1111340,1102150,1088561,1125153,1043507,1063263,313972,1129751,1131263,1064831,1055726,1065181,1132145,1070374,1070004,1103724,1094949,1047229,1102348,1074851,1115125,1084893,1123691,1122619,1129543,1067591,1112943,964762)