Qualitative Papers/Grade 1289

产品编号：FT-2-207-580580 品牌：sartorius 原厂货号：FT-2-207-580580
产品分类：耗材 > 过滤耗材 > 滤纸
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描述：

These qualitative filter papers are essentially used for analytical and routine analyses, when no gravimetric analyses are required. They are wet strengthened and can be used for pressure and vacuum filtration. They are available in different formats as in rolls, sheets, discs and folded filters.

注意事项：

Specifications of the different paper grades

Grade	Precipitation	Properties	Basis Weight	Particle retention (g/m²)	Filtration rate (µm)
1288	Coarse crystalline	Wide-pored, soft, spongy structure, wet strength, fast rate of filtration	84	12-15	10
1288 N	Coarse crystalline	Wide-pored, soft, spongy structure, wet strength, fast rate of filtration extra wet strengthened	84	12-15	10
1289	Medium-fine crystalline	Medium-wide-pored, wet strength, medium rate of filtration	84	8-12	20
1292	Fine crystalline	Medium density, wet strength, moderately, fast rate of filtration	84	5-8	50
1290	Fine crystalline	Narrow-pored, dense, wet strength, slow rate of filtration	84	3-5	100
1291	Very fine crystalline	Fine-pored, highly dense, wet strength, very slow rate of filtration	84	2-3	180
293	Very fine crystalline	Fine-pored, highly dense, very slow rate of filtration	80	1-2	300

Filtration rate

The time required to filter 10 ml of distilled water at 20°C through a free-hanging, fully-wetted disc filter with a diameter of 110 mm folded in quarters. Expressed in seconds (per mm)