Cytiva Filter Circles, Qualitative, Grade 50


Retention of very fine crystalline precipitates. The thinnest of all Whatman filter papers. Slow flow rate. Hardened and highly glazed surface. This finish also keeps the paper free from loose surface fibres. Highly suitable for qualitative or quantitative filtrations requiring vacuum assistance on Büchner or 3-piece filter funnels. Will withstand wet handling and precipitate removal by scraping. In the electronics industry, the virtual absence of fiber shedding is utilised in carriers for integrated circuits. - Very strong when wet. - Hardened low ash grades.
Description:slow
Particle retention in liquid:2.7 µm
Filtration speed Herzberg:2685 s
Ash content:0.015 %
Typical thickness:115 µm
Basis weight:97 g / m2
Filter type:filter circle
Filtration time:144.00 [s]
TypeHöhe
mm
Order No.PU Manuf. Prod. No. 
Grade 5042.505428637100-1450-042 
Grade 5055.005428638100-1450-055 
Grade 5070.005428639100-1450-070 
Grade 5090.005428640100-1450-090 
Grade 50110.005428641100-1450-110 
Grade 50125.005428642100-1450-125 
Grade 50150.005428643100-1450-150 
Grade 50185.005428644100-1450-185 
Grade 50240.005428645100-1450-240 
Grade 50320.005428646100-1450-320 
Grade 50500.005428648100-1450-500 
Ash is determined by ignition of the cellulose filter at 900 °C in air.