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首页 >>> 产品目录 >>> 代理品牌 >>> Whatman系列 >>> 纤维滤纸 Cellulose Filter >>> Quantitative Filter Papers - Hardened Low Ash Grades 硬化低灰定量滤纸

硬化低灰滤纸（灰分<0.025%）经强酸处理具有高湿强度和化学抗性。这些滤纸特别适用于布氏漏斗过滤。其坚韧光滑的表面易于回收沉淀物。

Grade 50: 2.7 µm
Whatman滤纸中最薄的一种。流速慢、颗粒保留性能好。硬化的表面有效的防止了纤维的脱落。

Grade 52: 7 µm
常规过滤用硬化滤纸，保留能力和流速中等。用于布氏漏斗货Whatman三件套过滤漏斗效果最佳。表面非常光滑。

Grade 54: 22 µm
适应于粗颗粒和凝胶状沉淀物的快速过滤。高湿强度适合于真空快速抽滤难虑物质。

Typical Properties - Quantitative Hardened Low Ash Grades
Grade Description Particle
Retention
in Liquid (µm)		 Filtration
Speed
Herzberg (s)		 Ash
Content*		 Typical
Thickness
(µm)		 Basis Weight
(g/m2)
50 Slow 2.7† 2685 0.015 115 97
52 Medium 7† 235 0.015 175 101
54 Very fast 22† 39 0.015 185 92

* Ash is determined by ignition of the cellulose filter at 900°C in air 
† Particle retention rating at 98% efficiency

 

Ordering Information - Quantitative Filter Papers - Hardened Low Ash Grades
Catalog Number Description

Grade 50

1450-042 Grade 50 circles, 42.5 mm 100/pk
1450-050 Grade 50 circles, 50 mm 100/pk
1450-055 Grade 50 circles, 55 mm 100/pk
1450-070 Grade 50 circles, 70 mm 100/pk
1450-090 Grade 50 circles, 90 mm 100/pk
1450-110 Grade 50 circles, 110 mm 100/pk
1450-125 Grade 50 circles, 125 mm 100/pk
1450-150 Grade 50 circles, 150 mm 100/pk
1450-185 Grade 50 circles, 185 mm 100/pk
1450-240 Grade 50 circles, 240 mm 100/pk
1450-320 Grade 50 circles, 320 mm 100/pk
1450-400 Grade 50 circles, 400 mm 100/pk
1450-500 Grade 50 circles, 500 mm 100/pk
1450-561 Grade 50 circles, 609.6 mm 100pk
1450-880 Grade 50 sheets, 10 x 10 inches 100/pk
1450-916 Grade 50 sheets, 150 x 230 mm 100/pk
1450-925 Grade 50 sheets, 400 x 400 mm 100/pk
1450-900 Grade 50 sheets, 410 x 400 mm 100/pk
1450-917 Grade 50 sheets, 460 x 570 mm 100/pk
1450-993 Grade 50 sheets, white smear tab 100/pk

Grade 52

1452-070 Grade 52 circles, 70 mm 100/pk
1452-090 Grade 52 circles, 90 mm 100/pk
1452-110 Grade 52 circles, 110 mm 100/pk
1452-125 Grade 52 circles, 125 mm 100/pk
1452-150 Grade 52 circles, 150 mm 100/pk
1452-240 Grade 52 circles, 240 mm 100/pk

Grade 54

1454-055 Grade 54 circles, 55 mm 100/pk
1454-070 Grade 54 circles, 70 mm 100/pk
1454-090 Grade 54 circles, 90 mm 100/pk
1454-110 Grade 54 circles, 110 mm 100/pk
1454-125 Grade 54 circles, 125 mm 100/pk
1454-150 Grade 54 circles, 150 mm 100/pk
1454-185 Grade 54 circles, 185 mm 100/pk
1454-240 Grade 54 circles, 240 mm 100/pk
1454-320 Grade 54 circles, 320 mm 100/pk
1454-500 Grade 54 circles, 500 mm 100/pk
1454-917 Grade 54 sheets, 460 x 570 mm 100/pk


 

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