Whatman filter paper

Manufactured by Cytiva

Sourced in United Kingdom, United States, Japan, Germany, Switzerland, China, India

Whatman filter paper is a laboratory filtration product designed for various filtering applications. It is manufactured to provide consistent quality and performance. The core function of Whatman filter paper is to separate solid particles from liquids or gases through the process of filtration.

Automatically generated - may contain errors

Lab products found in correlation

Whatman paper, by Cytiva (11 mentions) Uv 1800, by Shimadzu (7 mentions) Whatman no 1 filter paper, by Cytiva (7 mentions) Rotary evaporator, by Heidolph (6 mentions) Petri dishes, by Cytiva (4 mentions) Methanol, by Merck Group (4 mentions) Dimethyl sulfoxide (dmso), by Merck Group (4 mentions) Myjector u 100 insulin syringe, by Terumo (3 mentions) Cf300 cu, by Electron Microscopy Sciences (3 mentions) Morgagni 268 microscope, by Thermo Fisher Scientific (3 mentions) Formvar coated copper grid, by Electron Microscopy Sciences (3 mentions) Falcon tube, by BD (3 mentions) Tecnai f20, by Thermo Fisher Scientific (3 mentions) Nanodrop nd 1000 spectrophotometer, by Thermo Fisher Scientific (3 mentions) Agilent 1260 infinity system, by Agilent Technologies (2 mentions) Dt 102h, by Bandelin (2 mentions) Vista pro, by Agilent Technologies (2 mentions) Holey carbon grids copper multi a, by Quantifoil (2 mentions) Cm200 feg transmission em, by Thermo Fisher Scientific (2 mentions) Freeze dryer, by Labconco (2 mentions)

Close spelling variants of this product

Filter paper (419 citations) Whatman paper (338 citations) Whatman filter (94 citations) Whatman No. 5 filter paper (32 citations) Whatman 3MM filter paper (31 citations) Whatman 903 filter paper (21 citations) Whatman #3 filter paper (19 citations) Whatman filters paper No. 1 (10 citations) Whatman filter papers No. 1 (9 citations) Whatman filter paper number 3 (7 citations)

1 892 protocols using whatman filter paper

Glucose Detection Using Compound I

Check if the same lab product or an alternative is used in the 5 most similar protocols

Example 2

A known concentration of glucose solution was prepared and was titrated with a known concentration of compound formula I. The emission with different molar concentration of sugar was obtained which is provided in FIG. 5. The glucose solution concentration was varied from 9.98×10⁻⁶M to 1×10⁻⁶M. It was observed that the emission intensity changed depending upon the glucose concentration. It was further observed that up to 10⁻⁶M concentration of glucose can be sensed using the compound of formula I.

A. Preparation of a Thin Film on Whatman Filter Paper

Compound of formula I (3.78 mg) was dissolved in 10 ml of ethyl acetate. The resulting solution (C=1×10⁻³M) was coated on a Whatman Filter Paper and kept for 25 min at RT for drying. This coated Whatman Filter Paper emitted a deep blue colour.

B. Permanent Writing Experiments

The Whatman Filter Paper coated with Compound of formula I was used for permanent writing experiments. A ball pen having a refill filled with water or Glucose solution was taken and written on the Whatman Filter Paper. It was observed that after writing, the emission of written text enhanced. This enhanced emission was a permanent change on the paper.

US10781220B2. Pyrene tetra boronic acid, process for preparation and use thereof (2020-09-22). COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH [IN]. Inventors: Santhosh Babu Sukumaran [IN], Vivek Chandrakant Wakchaure [IN].

+ Open protocol

+ Expand

Mn3O4 Functionalized Carbon for Dye Removal

Check if the same lab product or an alternative is used in the 5 most similar protocols

The anionic methyl orange (MO) dye and the cationic methylene blue (MB) dye were used as model dyes to investigate the dye adsorption efficiencies of Mn₃O₄ functionalized carbon in a dead-end filtering mode. As a support, Mn₃O₄/AHC dispersion (10 mg mL⁻¹) was filtered using Whatman filter paper (area = 3.14 cm²). Whatman filter paper was chosen due to its ease of use, low cost, and biodegradability. Whatman filter paper is also constructed of cellulose, which provides less resistance to water passage. All of the tests were done at room temperature. The continuous flow studies showed that the material was efficient in cationic dye removal. Also, flux and rejection were recorded for 20 ppm each of MB and MO dye solution (10 mL). Adsorption kinetics and isotherm studies were also carried out for the prepared adsorbent material in order to study the maximum adsorption capacity and nature of the adsorption process.
Eqn (1) was used to compute the pollutants' removal effectiveness (% R). The starting and ultimate concentrations of contaminants are represented by C₀ and C_e, respectively.^{55 (link)}
Eqn (2) was used to calculate the quantity of MB uptake at equilibrium, q_e (mg g⁻¹), where V (L) is the volume of the aqueous solution and M (g) is the mass of the dry adsorbent employed.

Kamath S.V., Manohara H.M., Aruchamy K., Maraddi A.S., D'Souza G.B., Santhosh K.N., Mahadevaprasad K.N, & Nataraj S.K. (2022). Sorption based easy-to-use low-cost filters derived from invasive weed biomass for dye contaminated water cleanup. RSC Advances, 12(15), 9101-9111.

+ Open protocol

+ Expand

Synthesis of Sludge-Derived MnO2 Catalyst

Check if the same lab product or an alternative is used in the 5 most similar protocols

The sludge-derived MnO₂ was synthesized following the method reported in previous studies [14 (link),15 (link),16 (link)]. Predetermined volumes of 0.8 M H₂SO₄ and 0.8 M H₂O₂ were added to the dried sludge in a 250 mL Erlenmeyer flask, and the mixture was stirred on a magnetic stirrer and hot plate (PC-420D, Corning, NY, USA) for 5 min at 150 rpm and 25 °C. The mixture was filtered through 110 mm Whatman filter paper, after which small drops of 1 M NaOH were carefully added to the filtrate while it was stirred at 300 rpm and 25 °C. This was continued until the solution pH of 4.0 was reached ensuring complete precipitation of Fe³⁺ in the solution [14 (link)]. Next, the Fe³⁺ residue was separated from the solution via filtration using 110 mm Whatman filter paper leaving only Mn²⁺ in the filtrate. A 0.02 M KMnO₄ solution was then slowly added to the filtrate under constant agitation of 300 rpm at 90 °C. The resulting purple mixture was filtered through 110 mm Whatman filter paper, and the precipitate (MnO₂) was dried for 24 h at 105 °C.

Tumampos S.B., Ensano B.M., Pingul-Ong S.M., Ong D.C., Kan C.C., Yee J.J, & de Luna M.D. (2021). Isotherm, Kinetics and Thermodynamics of Cu(II) and Pb(II) Adsorption on Groundwater Treatment Sludge-Derived Manganese Dioxide for Wastewater Treatment Applications. International Journal of Environmental Research and Public Health, 18(6), 3050.

+ Open protocol

+ Expand

Melatonin Extraction and Quantification

Cited 1 time

Check if the same lab product or an alternative is used in the 5 most similar protocols

Melatonin and melatonin-derivatives extraction was done through a modification of the methods described by Riga et al [28 (link)] and Li et al. [33 (link)]. Briefly, 1 g of frozen leaves were ground into powder with liquid nitrogen and homogenized in a mix of acetone:methanol:water (89:10:1) containing 2.5 mM trichloroacetic acid. The homogenates were shaken for 30 min at RT and centrifuged at 10,000× g at 4 °C for 15 min. The supernatants were centrifuged again and subsequently filtered with Whatman filter paper (0.4 µm). The filtered supernatants were purified using an SPE cartridge (Waters, Milford, MA, USA). The cartridge was then washed with 10 mL 5% methanol, and melatonin was finally eluted at a natural flow rate with 2 mL 80% methanol. The extracts were subsequently filtered through a Whatman filter paper (0.20 μm) before UHPLC-ESI-MS/MS analysis. Melatonin, 3OH-Mel, AFMK and AMK determination and quantification was analyzed using a UHPLC-ESI-MS/MS (UHPLC-1290 Series and a 6460 QqQ-MS/MS; Agilent Technologies, Waldbronn, Germany) with an Agilent SB-C18 column (4.6 × 50 mm; 1.8 μm; Agilent Technologies, Santa Clara, CA, USA). The data reported are the mean ± SE of 3 biological replicates per treatment.

Martinez V., Nieves-Cordones M., Lopez-Delacalle M., Rodenas R., Mestre T.C., Garcia-Sanchez F., Rubio F., Nortes P.A., Mittler R, & Rivero R.M. (2018). Tolerance to Stress Combination in Tomato Plants: New Insights in the Protective Role of Melatonin. Molecules : A Journal of Synthetic Chemistry and Natural Product Chemistry, 23(3), 535.

+ Open protocol

+ Expand

Functionalization of Carbon Nanotubes

Check if the same lab product or an alternative is used in the 5 most similar protocols

Carbon nanotubes had 95% purity with an internal diameter of 30–50 nm and length of 10–20 μm. First, 1 gram of carbon nanotubes was added to 100 mL of 95% ethanol and dispersed using an ultrasonic device at room temperature for 1 hour. This helps to increase the total area of the adsorbent. The solution was then filtered with 0.45 Whatman filter paper followed by rinsing with distilled water and drying at of 100 °C to remove excess water. One gram of the dried carbon nanotubes was added to 200 mL of 0.5 M sulfuric acid (98%) and was placed in an ultrasonic device for 30 minutes. Next, the (MWCNTs/H₂SO₄) solution was combined with a 250 mg g⁻¹ solution of KMnO₄. The sulfuric acid solution was diluted with 100 cc of distilled water to prevent a rapid exothermic reaction (Fig. 1). After mixing carbon nanotube with H₂SO₄, it was added to KMnO₄ drop-wise (in case of lack of the needed instrument, H₂SO₄ can be diluted with water (100 cc)). The resulting combination is capable of exploding immediately and simultaneously. After cooling the KmnO₄/MWCNTS solution, the reflux method was used to perform the reaction for 5 hours at 150 °C. After separating the nanotubes from the solution with 0.45 Whatman filter paper and HCl (37%), the nanocomposite was rinsed with distilled water, followed by drying in an oven at 100 °C for 5 hours.

Khorasani Alamdari M., Nadiri A.A., Ghaforian H, & Sadeghfam S. (2023). Removal of arsenic with functionalized multi-walled carbon nanotubes (MWCNTs-COOH) using the magnetic method (Fe3O4) from aqueous solutions. RSC Advances, 13(36), 25284-25295.

+ Open protocol

+ Expand

Cryo-TEM Imaging of Ciprofloxacin-Loaded Liposomes

Check if the same lab product or an alternative is used in the 5 most similar protocols

Ciprofloxacin-loaded POPC liposomes were fabricated as mentioned
previously. Five microliters of the sample was loaded on glow discharged
(for 1 min), 300 mesh copper grids coated with formvar stabilized
with an ultrathin layer of carbon. The samples were then allowed to
settle on the surface of the grid for 45 s to 1 min. The excess fluid
was removed using a Whatman filter paper. The grids were then subjected
to negative staining with 3–5 μL of 2% uranyl acetate
solution for 30–35 s. Excess staining solution was removed
using a Whatman filter paper and the grids were air dried by leaving
them at room temperature away from light. The imaging was performed
at an accelerating voltage of 200 keV at defocus of −1.5 to
−2.5 μm using FEI TECNAI-G2 F20 CRYO TEM at a magnification
of 11,500×. The images were obtained on a K2 direct electron
detector camera from Gatan Ametek under low-dose conditions (10 electrons/pixel/s)
with a total exposure time of 5 s per image.

Singla A., Simbassa S.B., Chirra B., Gairola A., Southerland M.R., Shah K.N., Rose R.E., Chen Q., Basharat A., Baeza J., Raina R., Chapman M.J., Hassan A.M., Ivanov I., Sen A., Wu H.J, & Cannon C.L. (2022). Hetero-Multivalent Targeted Liposomal Drug Delivery to Treat Pseudomonas aeruginosa Infections. ACS Applied Materials & Interfaces, 14(36), 40724-40737.

+ Open protocol

+ Expand

Negative Staining of AAV Capsids

Check if the same lab product or an alternative is used in the 5 most similar protocols

An AAV sample (3 µL) was placed on a 150 mesh copper grid coated with 5–6 nm Formvar/carbon EMS CF150-Cu film (Electron Microscopy Sciences, Hatfield, PA, USA) for 1 min. The grid was washed with 3 drops of 6 μL distilled water. Excess water was removed with Whatman filter paper. The sample was negatively stained with 6 μL 0.75% uranyl acetate (SPI Supplies, West Chester, PA, USA) for 30 s. Excess staining solution was removed with Whatman filter paper and the grid was dried at room temperature. We captured 6–12 electron micrographs of AAV capsids using a Tecnai G2 Spirit BioTwin electron microscope (FEI, Hillsboro, OR, USA) equipped with a 4K CCD Gatan Ultrascan camera (Gatan, Pleasanton, CA, USA) at an accelerating voltage of 120 kV and a nominal magnification of 30,000× and 49,000×.

Tejero M., Duzenli O.F., Caine C., Kuoch H, & Aslanidi G. (2023). Bioengineered Hybrid Rep 2/6 Gene Improves Encapsulation of a Single-Stranded Expression Cassette into AAV6 Vectors. Genes, 14(10), 1866.

+ Open protocol

+ Expand

Aqueous extraction of medicinal leaves

Check if the same lab product or an alternative is used in the 5 most similar protocols

Aqueous extracts of leaves were outturn with fresh leaves of Polygonum plebeium, Litsea glutinosa, and Vangueria spinosus by the following procedure: Firstly, leaves were cleaned using tap water followed by the surface cleaning using distilled water until no impurities were left on it and dried in the shady area. Then, 5 gm of dried leaf powder was weighed and added to 100 ml distilled water into a beaker. Commixture was incubated on water bath with stirring sporadically for 1h at 60°C and left to cool at room temperature (32°C) [14 (link)]. Commixture was filtered using a sieve and then Whatman filter paper of 2.5 μm pore size, and the filtrate was collected into a beaker as shown in Fig. 1. The left plant extract was preserved in the cold storage for future use.Fig. 1

(A) Aqueous filtrate of Litsea glutinosa, Vangueria spinosus, and Polygonum plebeium leaves with different colour (Brown, Yellow and White). (B) Collection of the aqueous filtrate of Litsea glutinosa and Vangueria spinosus through Whatman filter paper into a beaker

Mukherjee K., Bhagat N., Kumari M., Choudhury A.R., Sarkar B, & Ghosh B.D. (2023). Insight study on synthesis and antibacterial mechanism of silver nanoparticles prepared from indigenous plant source of Jharkhand. Journal of Genetic Engineering & Biotechnology, 21, 30.

+ Open protocol

+ Expand

Extraction of Carica papaya Seed Compounds

Check if the same lab product or an alternative is used in the 5 most similar protocols

About (200 g) of powdered Carica papaya seed were packed in a soxhlet apparatus and extracted with hexane, ethyl acetate, and methanol sequentially. The extracts obtained were filtered using Whatman filter paper (15 cm) after which the filtrates were concentrated on a rotary evaporator and hexane, ethyl acetate and methanol extracts were obtained. The residue from the methanol extraction using soxhlet extractor was soaked in distilled water for 24 h after which it was filtered using a muslin cloth and Whatman filter paper to obtain the aqueous extract.

Agada R., Usman W.A., Shehu S, & Thagariki D. (2020). In vitro and in vivo inhibitory effects of Carica papaya seed on α-amylase and α-glucosidase enzymes. Heliyon, 6(3), e03618.

+ Open protocol

+ Expand

Trace Metal Analysis in Marine Organisms

Check if the same lab product or an alternative is used in the 5 most similar protocols

Crabs were thawed and dissected for their tissues (exoskeleton, digestive gland and gills). Dissected tissues were weighed, and oven-dried at 50 °C to constant weight for at least 48 h. 0.5 g of pooled dried tissues from the crabs were replicated thrice and digested in 20 ml concentrated nitric acid for 24 h. Subsequently, the digested samples were mixed with 10 ml of concentrated nitric and perchloric acid (4:1) and heated on a hot plate at 120 °C until complete evaporation of acid mixture and dryness. Residues were made up to 20 ml solution by adding 20 ml solution of Milli-Q water with 20 % nitric acid and filtered with Whatman filter paper (Sudharsan et al., 2012 ). Trace metal concentrations in tissues were determined with Inductively Plasma Optical Emission Spectrometry (ICP-OES, Perkin Elmer).
Sediments were weighed and oven-dried at 60 °C to constant weight for at least 48 h. Dried sediments were ground into a powdery form using an electronic ball shaker, sieved with a 75 μm mesh. One gram of homogenized sediment was digested with acid in triplicates in line with the methods of Sudharsan et al. (2012) . Water samples were thawed and filtered with Whatman filter paper. Five ml of water samples were digested in 10 ml AR grade nitric acid, made up to 50 ml with deionized water and analyzed for metal concentrations with ICP-OES.

Adeleke B., Robertson-Andersson D, & Moodley G. (2020). Comparative analysis of trace metal levels in the crab Dotilla fenestrata, sediments and water in Durban Bay harbour, Richards Bay harbour and Mlalazi estuary, Kwazulu-Natal, South Africa. Heliyon, 6(8), e04725.

+ Open protocol

+ Expand

About PubCompare

Our mission is to provide scientists with the largest repository of trustworthy protocols and intelligent analytical tools, thereby offering them extensive information to design robust protocols aimed at minimizing the risk of failures.

We believe that the most crucial aspect is to grant scientists access to a wide range of reliable sources and new useful tools that surpass human capabilities.

However, we trust in allowing scientists to determine how to construct their own protocols based on this information, as they are the experts in their field.

Ready to get started?

Revolutionizing how scientists
search and build protocols!

Request a quote for « Whatman filter paper »