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        當(dāng)前位置:網(wǎng)站首頁(yè)產(chǎn)品展示 > > Whatman濾膜濾筒濾器 > 7001-0004纖維素濾膜
        纖維素濾膜

        纖維素濾膜

        簡(jiǎn)要描述:Whatman纖維素濾紙廣泛應(yīng)用于實(shí)驗(yàn)室樣品制備、微生物研究、水溶液過(guò)濾,有硝酸纖維素膜、醋酸纖維素膜和混合纖維素膜。其中硝酸纖維素膜和混合纖維素膜提供網(wǎng)格供選擇,網(wǎng)格線(xiàn)的墨水無(wú)毒,并且不含有細(xì)菌生長(zhǎng)抑制劑。

        產(chǎn)品型號(hào): 7001-0004

        所屬分類(lèi):Whatman濾膜濾筒濾器

        更新時(shí)間:2024-07-18

        詳細(xì)說(shuō)明:

        Cellulose Membranes纖維素濾膜

        Whatman提供以下纖維素膜:純醋酸纖維素膜,純硝酸纖維素膜,醋酸和硝酸混合纖維素酯膜.

         

        Cellulose Acetate Membranes醋酸纖維素膜

        Whatman醋酸纖維素膜由純的醋酸纖維素制造而成,這使得這種膜用于生物和臨床分析、無(wú)菌測(cè)試和閃爍測(cè)量非常理想。

        醋酸纖維素膜的蛋白吸附力很低。它是親水性膜,適用于水溶液和酒精(介質(zhì))。醋酸纖維素膜已經(jīng)提高了溶劑抗性,尤其是對(duì)低分子量的醇類(lèi),同時(shí)加強(qiáng)了熱穩(wěn)定性。由于物理強(qiáng)度高,這種濾膜可以耐180攝氏度高溫,所以適用于熱氣體以及用各種辦法進(jìn)行消毒,而保持膜的完整性。

        技術(shù)參數(shù)-醋酸纖維素膜

        型號(hào)           厚度            水流速                空氣流速           起泡點(diǎn)

                          μm             p=0.9bar                 p=3mbar                bar

                                              (ml/min/cm²       (ml/min/cm²

        OE 66         115             20                         -                          3.7

        OE 67         115             40                        25                        2.7

        ST 68         140             170                       50                        1.5

        ST 69         140             300                       90                        0.9

         

        訂貨信息-醋酸纖維素膜

        尺寸(mm       孔徑(μm          目錄號(hào)                     無(wú)菌                 數(shù)量/包裝

        WCA

        25                        0.2                      7001-0004                      100

        25                        0.45                    7000-0002                      100

        47                        0.45                    7000-0004                      100

        OE 66

        25                       0.2                       10404106                       100

        47                       0.2                       10404112                       100

        47                       0.2                       10404170                       100

        50                       0.2                       10404114                       100

        110                     0.2                       10404126                       50

        142                     0.2                       10404131                       25

        293                     0.2                       10404139                       25

        300x600             0.2                       10404180                       5

        OE 67

        13                      0.45                      10404001                       100

        25                      0.45                      10404006                       100

        47                      0.45                      10404012                       100

        50                      0.45                      10404014                       100

        85                      0.45                      10404044                       50

        100                    0.45                      10404021                       50

        110                    0.45                      10404026                       50

        142                    0.45                      10404031                       25

        OE 67/A

        142                    0.45                      10404331                       25

        ST 68

        47                      0.8                        10403112                       100

        50                      0.8                        10403114                       100

        ST 69

        47                      1.2                        10403012                       100

        50                      1.2                        10403014                       100

        Cellulose Nitrate Membranes硝酸纖維素膜

        推薦用于大多數(shù)日常應(yīng)用,是在嚴(yán)格控制室內(nèi)清潔的條件下生產(chǎn)的。一般情況下,無(wú)需要求任何明顯的技術(shù)改變,就可以直接替換掉其他生產(chǎn)廠(chǎng)商的用于一般過(guò)濾目的的濾膜。使用者會(huì)從Whatman現(xiàn)有的濾膜的改進(jìn)中獲得益處。

         

        更高的強(qiáng)度和韌性

        大多數(shù)膜本質(zhì)上都很脆弱而且不容易操作;但是很少在裝載到過(guò)濾器或在使用過(guò)程中損壞掉。Whatman硝酸纖維素膜韌性很明顯加強(qiáng)了,能承受住在不破壞膜完整性的條件下操作、裝載和消毒時(shí)的撕裂。經(jīng)破裂測(cè)試已是*的膜。

         

        低可提取水平

        濾膜中可提取物水平和過(guò)濾或吸附技術(shù)的改進(jìn)一樣變得越來(lái)越重要。尤其是在藥學(xué)、免疫學(xué)、生物學(xué)組織培養(yǎng)和衡量分析應(yīng)用方面,高的提取物水平會(huì)起到負(fù)面影響。Whatman硝酸纖維素膜的提取物水平一般比其它同種型號(hào)的膜低。

         

        孔徑精確

        Whatman濾膜一個(gè)主要特征是孔徑精確度很高。膜的孔徑率經(jīng)先進(jìn)的生產(chǎn)和控制系統(tǒng)嚴(yán)格控制。另外,批間差的變化最小,保持一致的實(shí)驗(yàn)結(jié)果。

         

        增加的溫度穩(wěn)定性

        濾膜可以在不失完整性的情況下在121攝氏度下進(jìn)行正常消毒。硝酸纖維素膜有圓片、方片和卷狀等規(guī)格。

         

        收縮量減小

        過(guò)多的收縮在消毒過(guò)程中會(huì)產(chǎn)生問(wèn)題,也經(jīng)常會(huì)在消毒后再濾器中發(fā)生膜的撕裂,也可能導(dǎo)致流速的降低和整個(gè)過(guò)濾量的減少。Whatman濾膜在消毒過(guò)程中收縮量低。

         

        特征和優(yōu)點(diǎn):

        一、孔徑分布精確能改進(jìn)表面俘獲和分析。

        二、提取物水平低,保證樣品的完整性。

         

        應(yīng)用

        一、樣品分離

        二、微生物研究

        三、水溶液過(guò)濾

         

        Cellulose Nitrate Filter Types硝酸纖維素膜類(lèi)型

        白色光滑濾膜

        這是大多數(shù)實(shí)驗(yàn)室應(yīng)用的標(biāo)準(zhǔn)濾膜,用于1.0μm-5.0μm大小的顆粒和細(xì)胞。過(guò)濾后的殘留物大多數(shù)保留在膜的表面,可以進(jìn)行沉淀物物理性回收和顯微鏡觀(guān)察。

         

        用于核算和蛋白分析的硝酸纖維素膜

        1975年,EMSouthern發(fā)明了從瓊脂凝膠轉(zhuǎn)移DNA到一張硝酸纖維素膜的技術(shù)。這個(gè)技術(shù)以它的發(fā)明者命名為Southern Blotting。隨后,蛋白和RNA轉(zhuǎn)移的技術(shù)也發(fā)展起來(lái)了。與層析技術(shù)相關(guān)的是需要相當(dāng)數(shù)量的高質(zhì)量的色譜紙,3MM紙已經(jīng)成為的層析紙。

        技術(shù)參數(shù)-硝酸纖維素膜

                                                         硝酸纖維

        厚度                                         125μm

        爆裂強(qiáng)度                                 >2 psi

        重量                                         3.6-5.5 mg/cm²

        最高操作溫度                          80

        孔率                                          66-84%

        蒸汽高壓滅菌                          yes

        親水性                                      yes

         

        典型應(yīng)用-硝酸纖維素膜

        應(yīng)用領(lǐng)域                     孔徑(μm)           應(yīng)用領(lǐng)域                                孔徑(μm)

        普通                                                       沉淀物分析                            0.45

        微過(guò)濾                         0.1                    懸浮顆粒                                 5

        超凈                             0.1                    空氣污染監(jiān)測(cè)             

        滅菌                             0.2                    Asbestos Monitoring(NIOSH)   0.8

        去除大多數(shù)微生物     0.45                  食品飲料控制            

        分析性沉淀物             0.65                  大腸桿菌                                 0.45(網(wǎng)格)

        純化過(guò)濾                     1                       總細(xì)菌計(jì)數(shù)                             0.2

        去除顆粒物                 5                       組織培養(yǎng)基              

        水中微生物分析                                  去除支原體                             0.1

        細(xì)菌計(jì)數(shù)                     0.45(網(wǎng)格)  滅菌過(guò)濾                                 0.2

         

        訂貨信息-硝酸纖維素膜

        尺寸(mm            孔徑(μm           目錄號(hào)                     數(shù)量/

        WCN

        13                              0.2                           7182-001                100

        13                              0.45                         7184-001                100

        25                              0.2                           7182-002                100

        25                              0.1                           7181-002                100

        25                              0.45                         7184-002                100

        25                              0.65                         7186-002                100

        25                              0.8                           7188-002                100

        25                              1.0                           7190-002                100

        25                              3.0                           7193-002                100

        25                              5.0                           7195-002                100

        37                              0.45                         7184-003                100

        37                              0.8                           7188-003                100

        47                              0.1                           7181-004                100

        47                              0.2                           7182-004                100

        47                              0.45                         7141-004                100

        47                              0.45                         7141-104                100

        47                              0.45                         7141-114                100

        47                              0.45                         7141-204                100

        47                              0.45                         7141-124                200

        47                              0.45                         7141-154                1000

        47                              0.45                         7184-004                100

        47                              0.65                         7186-004                100

        47                              0.8                           7188-004                100

        47                              1.0                           7190-004                100

        47                              3.0                           7193-004                100

        47                              5.0                           7195-004                100

        82                              0.45                         7184-008                25

        90                              0.2                           7182-009                25

        90                              0.45                         7184-009                25

        90                              0.8                           7188-009                25

        90                              1.0                           7190-009                25

        90                              5.0                           7195-009                25

        142                            0.2                           7182-014                25

        142                            0.45                         7184-014                25

        293                            0.45                         7184-029                25

         

         

        化學(xué)穩(wěn)定性和惰性

        PTFE適用于化學(xué)腐蝕性強(qiáng)的有機(jī)溶劑、水溶液和氣體,它對(duì)大多數(shù)的酸性、堿性和溶液都有抗性,非



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