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    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper
    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper
    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper
    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper
    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper
    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper

    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper

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    39,733 so'm

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    ┃☼♡↞↞↞7cm slow speed buy two get one free↠↠↠♡

    39,733 so'm200 available in stock

    ┃☼♡↞↞↞7cm medium speed buy two get one free↠↠↠♡

    41,285 so'm200 available in stock

    ┃☼♡↞↞↞7cm fast buy two get one free↠↠↠♡

    41,285 so'm200 available in stock

    ┃☼♡↞↞↞11cm slow speed buy two get one free↠↠↠♡

    69,826 so'm200 available in stock

    ┃☼♡↞↞↞11cm medium speed buy two get one free↠↠↠♡

    69,826 so'm200 available in stock

    ┃☼♡↞↞↞11cm fast buy two get one free↠↠↠♡

    69,826 so'm200 available in stock

    ┃☼♡↞↞↞12.5cm slow speed buy two get one free↠↠↠♡

    73,023 so'm200 available in stock

    ┃☼♡↞↞↞12.5cm medium speed buy two get one free↠↠↠♡

    73,023 so'm200 available in stock

    ┃☼♡↞↞↞12.5cm fast buy two get one free↠↠↠♡

    73,023 so'm200 available in stock

    ┃☼♡↞↞↞15cm slow speed buy two get one free↠↠↠♡

    85,719 so'm200 available in stock

    ┃☼♡↞↞↞15cm medium speed buy two get one free↠↠↠♡

    85,719 so'm200 available in stock

    ┃ ☼ ♡ ↞ ↞ ↞ 15cm fast buy two get one free↠↠↠ ♡

    85,719 so'm200 available in stock

    ┃☼♡↞↞↞18cm slow speed. do not participate in the giveaway event↠↠↠♡

    98,415 so'm200 available in stock

    ┃☼♡↞↞↞18cm medium speed. not participating in the giveaway event↠↠↠♡

    98,415 so'm200 available in stock

    ┃☼♡↞↞↞18cm fast. do not participate in the giveaway event↠↠↠♡

    98,415 so'm200 available in stock

    ┃☼♡↞↞↞9cm slow speed buy two get one free↠↠↠♡

    66,676 so'm200 available in stock

    ┃☼♡↞↞↞9cm medium speed buy two get one free↠↠↠♡

    66,676 so'm200 available in stock

    ┃☼♡↞↞↞9cm fast buy two get one free↠↠↠♡

    66,676 so'm200 available in stock

    ┃☼♡↞↞↞60*60 large sheets, 10 quick sheets. if you don’t participate in the giveaway event↠↠↠♡

    98,415 so'm200 available in stock

    ┃☼♡↞↞↞60*60 large sheet, 10 sheets at medium speed. do not participate in the giveaway event↠↠↠♡

    98,415 so'm200 available in stock

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    Qualitative filter paper bright 7cm 9cm 11cm12.5cm fast medium slow oil test filter paper laboratory filter paper

    About the product

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    Description

    化学实验中的使用方法:

    在实验中使用滤纸多连同过滤漏斗及布氏漏斗等仪器一同使用。使用前需把滤纸折成合适的形状,常见的折法是把滤纸折成类似花的形状。滤纸的折迭程度愈高,能提供的表面面积亦愈高,过滤效果亦愈好,但要注意不要过度折迭而导致滤纸破裂。把引流的玻璃棒放在多层滤纸上,用力均匀,避免滤纸破坏。

    具体操作过程

    1.将过滤纸对折,连续两次,叠成90°圆心角形状。 漏斗

    2.把叠好的滤纸,按一侧三层,另一侧一层打开,成漏斗状。

    3.把漏斗状滤纸装入漏斗内,滤纸边要低于漏斗边,向漏斗口内倒一些清水,使浸湿的滤纸与漏斗内壁贴靠,再把余下的清水倒掉,待用。

    4.将装好滤纸的漏斗安放在过滤用的漏斗架上,(如铁架台的圆环上),在漏斗颈下放接纳过滤液的烧杯或试管,并使漏斗颈靠于接纳容器的壁上。

    5.向漏斗里注入需要过滤的液体时,右手持盛液烧杯,左手持玻璃棒,玻璃棒下端靠紧漏斗三层低一面上,使杯口紧贴玻璃棒,待滤液体沿杯口流出,再沿玻璃棒倾斜之势,顺势流入漏斗内,流到漏斗里的液体,液面不能超过漏斗中滤纸的高度。

    6.当液体经过滤纸,沿漏斗颈流下时,要检查一下液体是否沿杯壁顺流而下,注到杯底。否则应该移动烧杯或旋转漏斗,使漏斗与烧杯壁贴牢,就可以使液体顺杯壁下流了。

    模板保护代码

    模板保护代码

    模板保护代码

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    Properties

    Material

    Material

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    Material

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    Material

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    Item number

    Description

    化学实验中的使用方法:

    在实验中使用滤纸多连同过滤漏斗及布氏漏斗等仪器一同使用。使用前需把滤纸折成合适的形状,常见的折法是把滤纸折成类似花的形状。滤纸的折迭程度愈高,能提供的表面面积亦愈高,过滤效果亦愈好,但要注意不要过度折迭而导致滤纸破裂。把引流的玻璃棒放在多层滤纸上,用力均匀,避免滤纸破坏。

    具体操作过程

    1.将过滤纸对折,连续两次,叠成90°圆心角形状。 漏斗

    2.把叠好的滤纸,按一侧三层,另一侧一层打开,成漏斗状。

    3.把漏斗状滤纸装入漏斗内,滤纸边要低于漏斗边,向漏斗口内倒一些清水,使浸湿的滤纸与漏斗内壁贴靠,再把余下的清水倒掉,待用。

    4.将装好滤纸的漏斗安放在过滤用的漏斗架上,(如铁架台的圆环上),在漏斗颈下放接纳过滤液的烧杯或试管,并使漏斗颈靠于接纳容器的壁上。

    5.向漏斗里注入需要过滤的液体时,右手持盛液烧杯,左手持玻璃棒,玻璃棒下端靠紧漏斗三层低一面上,使杯口紧贴玻璃棒,待滤液体沿杯口流出,再沿玻璃棒倾斜之势,顺势流入漏斗内,流到漏斗里的液体,液面不能超过漏斗中滤纸的高度。

    6.当液体经过滤纸,沿漏斗颈流下时,要检查一下液体是否沿杯壁顺流而下,注到杯底。否则应该移动烧杯或旋转漏斗,使漏斗与烧杯壁贴牢,就可以使液体顺杯壁下流了。

    模板保护代码

    模板保护代码

    模板保护代码

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