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Industrial & Scientific > Filtration > Lab Filters > Quantitative Filter Paper > B00394F98C
  1. Whatman 1001-125 Qualitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 125mm Diameter (Pack of 100)
    Whatman 1001-125 Qualitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 125mm Diameter (Pack of 100)
    Whatman 1001-125 Qualitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 125mm Diameter (Pack of 100)
    Image(s) provided for illustrative purposes and may differ from the actual product
  2. Whatman 1001-125 Qualitative Filter Paper Circles, 11 Micron, 10.5 s/100mL/sq inch Flow Rate, Grade 1, 125mm Diameter (Pack of 100)

    Delivery: 10-20 Working Days
    Customer Ratings (4 reviews)
    Price R457.00

Product Description

  • 12.5cm
  • Grade 1
  • Covers a wide range of laboratory applications; frequently used for clarifying liquids
  • Areas of use include the food industry, agriculture, air pollution monitoring, and gas detection
  • Widely used in education for teaching simple qualitative analytical separations
Additional Information

This Whatman 12.5cm, grade 1, cellulose filter paper is the most widely used filter paper for routine applications with medium retention (11µm) and flow rate. Traditionally, this grade is used in qualitative analytical separations for precipitates such as lead sulfate, calcium oxalate (hot), and calcium carbonate. In agriculture, it is used for soil analysis and seed testing procedures. It is also used for numerous routine techniques in the food industry to separate solid foodstuffs from associated liquid or extracting liquid; and is widely used in education for teaching simple qualitative analytical separations. In air pollution monitoring, using circles or rolls, atmospheric dust is collected from airflow and the stain-intensity is measured photometrically. For gas detection, the paper is impregnated with a chromogenic reagent and color formation is quantified by optical reflectance. Retention: 11µm. Diameter: 12.5cm. 100/Pack. Whatman #: 1001-125.

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Most Helpful Customer Reviews

The high quality of Whatman is known all over the world. I am a chemist so I can certainly vouch for the quality of this product.!!
I use a lot of different filters in my lab.

-They work very quickly.
-Never had a problem with chemical contamination

-Very infrequently small bits of paper sluff off the edges into the filter container.
-Not very durable when wet. If you are looking for a filter paper that is durable after getting wet then I probably wouldn't use this one.

I would recommend these for almost all laboratory uses. Let me know if you have any specific questions. Hope you have found this helpful.
I use this to filter Gunzilla and other fluids of high and low viscosity for reuse. This particular filter yields perfectly clean liquid. It's slow, however, so it would behoove those considering this filter to buy others with higher flow rates as well. Overall, great filter.
Please Note

The authorised South African distributor of this product is under no obligation to honour the manufacture's guarantees/warranties or to provide after-sales service.

Please note that this item is imported from the USA, and is designed to be used in the USA. In addition, if the unit is powered it will come with a US plug and an adapter/transformer may be required. Please click here for more information on power requirements, or check with us if you are unsure or need any assistance!

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