No. 40

No. 40 Quantitative Ashless Paper

Most widely used general purpose gravimetric filter paper; acid washed, ash content 0.007%
Medium speed and retention (8 µm); rough surface
Used for calcium oxalate, silica in steel and well-digested barium sulfate; as a high-purity filter in the collection of trace elements and radionuclides in the atmosphere
Used as a support for x-ray fluorescence and as a sample carrier for Shoeniger combustion

Filter Paper, Grade 40, 55mm (100/pk)
Whatman Filter Paper, Grade 41; Circles; Diameter: 5.5cm (100/pk) Learn More

$26.83

Part Number: 1440-055
Cross Reference(s): 1440-055
Filter Paper, Grade 40, 70mm (100/pk)
Whatman Filter Paper, Grade 41; Circles; Diameter: 7.0cm (100/pk) Learn More

$27.99

Part Number: 1440-070
Cross Reference(s): 1440-070
Filter Paper, Grade 40, 90mm (100/pk)
Whatman Filter Paper, Grade 41; Circles; Diameter: 9.0cm (100/pk) Learn More

$38.98

Part Number: 1440-090
Cross Reference(s): 1440-090
Filter Paper, Grade 40, 110mm (100/pk)
Whatman Filter Paper, Grade 41; Circles; Diameter: 11.0cm (100/pk) Learn More

$46.20

Part Number: 1440-110
Cross Reference(s): 1440-110
Filter Paper, Grade 40, 125mm (100/pk)
Whatman Filter Paper, Grade 41; Circles; Diameter: 12.5cm (100/pk) Learn More

$52.33

Part Number: 1440-125
Cross Reference(s): 1440-125
Filter Paper, Grade 40, 150mm (100/pk)
Whatman Filter Paper, Grade 41; Circles; Diameter: 15.0cm (100/pk) Learn More

$69.38

Part Number: 1440-150
Cross Reference(s): 1440-150
Filter Paper, Grade 40, 185mm (100/pk)
Whatman Filter Paper, Grade 41; Circles; Diameter: 18.5cm (100/pk) Learn More

$102.17

Part Number: 1440-185
Cross Reference(s): 1440-185

No. 40 Quantitative Ashless Paper