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
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.
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.
Pros: -They work very quickly. -Never had a problem with chemical contamination
Cons: -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.
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!
Please also note that certain items cannot be imported, these include Alcohol, Animals, Flammable Materials, Currency, Food, Furs, Chemicals, Explosives, Medications, Plants, Seeds, Supplements, Pressurized Cans, Tactical Equipment, Vitamins, Weaponry and Weaponry Accessories. In these cases, the item and information is displayed for reference purposes only. If you are not sure if we are permitted to bring an item, please send us an e-mail with a link to the item to confirm.
Please also ensure that you are ordering the correct item for your particular application as returns to the USA are costly. Product reviews are also provided for most of our items, which can give you a good idea for possible things to look out for and the quality of the item. By clicking Add to Cart, you are confirming that the item is correct and you accept the conditions listed here.