whatman定性滤纸Grade 1 47mm/90mm/110mm直径100片/盒直径：47mm，90mm，100mm等孔径：11um

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whatman定性滤纸Grade 1 47mm/90mm/110mm直径

Grade	Grade 11)
Grade Type	Standard
Diameter	90 mm
Particle Retention in Liquid Max.	11 μm2)
Typical Thickness	180 μm
Basis Weight	88 g/m2
Filtration Speed (Herzberg)	Approx. 150 s
Air Flow Rate	10.5 s/100 ml/in2
Ash Content	0.06%
Tensile M/D Dry	39.1 N/15 mm
Material	Cellulose
Alpha Cellulose Content Min.	0.98%
Trace Elements	Aluminum:<0.5 μg/gAntimony: <0.02 μg/gArsenic: <0.02 μg/gBarium: <1 μg/gBoron: 1 μg/gBromine: 1 μg/gCalcium: 185 μg/gChlorine: 130 μg/gChromium: 0.3 μg/gCopper: 1.2 μg/gFluorine: 0.1 μg/gIron: 5 μg/gLead: 0.3 μg/gMagnesium: 7 μg/gManganese: 0.06 μg/gMercury: <0.005 μg/gNitrogen: 23 μg/gPotassium: 3 μg/gSilicon: 20 μg/gSodium: 160 μg/gSulfur: 15 μg/gZinc: 2.4 μg/g
Properties	Medium flow
1)This data shown may be based on historic Whatman records. We are in the process of updating our supporting information as the manufacturing site for these products is changing or have changed already. We will update with new data as soon as it is available (expected to be completed by Jan. 2016). As is normal practice, customers should determine and validate for themselves (as necessary) that the products are suitable for their specific application.
2)Particle retention rating at 98% efficiency.