Cytiva Whatman™ Qualitative Filter Paper: Grade 1 Circles

Product Code.	Diameter (Metric)	Quantity	unitSize
11392805	90 mm	100/Pk.	Pack of 100
11350394	15 mm	500/Pk.	Pack of 500
11302805	20 mm	400/Pk.	Pack of 400
11312805	25 mm	400/Pk.	Pack of 400
10193971	30 mm	400/Pk.	Pack of 400
11332805	32 mm	100/Pk.	Pack of 100
10433891	42.5 mm	100/Pk.	Pack of 100
11352805	47 mm	100/Pk.	Pack of 100
10292221	55 mm	100/Pk.	Pack of 100
11372805	70 mm	100/Pk.	Pack of 100
10738611	85 mm	100/Pk.	Pack of 100
11302815	110 mm	100/Pk.	Pack of 100
10424081	125 mm	100/Pk.	Pack of 100
11322815	150 mm	100/Pk.	Pack of 100
10434271	185 mm	100/Pk.	Pack of 100
11342815	240 mm	100/Pk.	Pack of 100
10786262	270 mm	100/Pk.	Pack of 100
10134071	320 mm	100/Pk.	Pack of 100
15788032	25 mm	100/Pk.	Pack of 100
11370394	30 mm	100/Pk.	Pack of 100
11340394	385 mm	100/Pk.	Pack of 100
11372815	400 mm	100/Pk.	Pack of 100
11320394	10 mm	500/Pk.	Pack of 500
12494272	45 mm	100/Pk.	Pack of 100

Product Code. 11392805 Supplier Cytiva Supplier No. 1001090

Description

Covers a wide range of laboratory applications and is frequently used for clarifying liquids. Whatman™ Qualitative Filter Paper: Grade 1 Circles are widely used standard grade filter papers for routine applications with medium retention and flow rates.

 

These cellulose filters are used in qualitative analytical techniques to determine and identify materials and for clarifying liquids. 

• Particle Retention: >11μm
• Porosity: medium
• Filtration speed: ASTM™, 40 sec.; Herzberg, 150 sec.
• Surface: smooth
• Separates precipitates such as lead sulfate, calcium oxalate (hot) and calcium carbonate
• Used for soil analysis and seed testing procedures in the agricultural industry
• Used to separate solid foodstuffs from associated liquid or extract liquid in the food industry
• Atmospheric dust is collected from airflow and the stain-intensity measured 
• Impregnated with a chromogenic reagent and color formation quantified by optical reflectance for gas detection

 

Specifications

• Airflow Rate: 13sec./100mL/sq. in.
• Basis Weight: 87 g/m²
• Description: Grade 1 Qualitative Filter Paper Standard Grade, circle, 90 mm
• Format: Disc
• Material: Cellulose
• Particle Retention: >11 μm
• Filtration Speed: 150 sec.
• Flow Rate: 57mL/min. (water)
• For Use With (Application): A widely used standard grade filter paper for routine applications with medium retention and flow rate. It covers a wide range of laboratory applications and is frequently used for clarifying liquids.
• Grade: Grade 1
• Porosity: Medium
• Quantity: 100/Pk.
• Thickness (Metric): 180 μm
• Type: Qualitative Filter Paper
• Diameter (English): 3.54 in.
• Diameter (Metric): 90 mm