Analysis Instruments

 Glass Filter Holder
• MOC : Borosilicate Glass
• Support screen : Sintered Glass
• Stopper : Silicone Rubber
• Clamp : Anodized Aluminum
• Filter Size : 25mm, 47mm, 90 mm
• Filtration area : 2.1 cm2, 9.6 cm2, 43 cm2
• Funnel Capacity: 300ml, 500ml, 1000ml.

Stainless Steel Filter Holder
• MOC : SS316
• Support screen : SS316
• Stopper : Silicone Rubber
• Clamp : Inbuilt SS316
• Filter Size : 25mm, 47mm, 90 mm
• Filtration area : 2.1 cm2, 9.6 cm2, 43 cm2
• Funnel Capacity: 300ml, 500ml, 1000ml

SS Filter Holder (Duck Clamp)
• MOC : SS316
• Support screen : SS316
• Stopper : Silicone Rubber
• Clamp : Duck Clamp Anodized Aluminum
• Filter Size : 25mm, 47mm, 90 mm
• Filtration area : 2.1 cm2, 9.6 cm2, 43 cm2
• Funnel Capacity: 300ml, 500ml, 1000ml.

Hydrofil Filter Holder
• MOC : SS316
• Support screen : SS316
• Stopper : Silicone Rubber
• Clamp : Spin Lock
• Filter Size : 47mm.
• Filtration area : 2.1 cm2, 9.6 cm2, 43 cm2 
• Funnel Capacity: 100ml, 300ml, 500ml

Magnetic Filter Holder
• MOC : Polysulfide
• Support screen : PES
• Stopper : Silicone Rubber
• Clamp : Magnetic
• Filter Size : 47mm.
• Filtration area : 9.6 cm2
• Funnel Capacity: 300ml, 500ml.

PSU Filter Holder
• MOC : Polysulfide
• Support screen : PES
• Stopper : Silicone Rubber
• Clamp : Spin Lock
• Filter Size : 47mm
• Filtration area : 9.6 cm2. 
• Funnel Capacity: 300ml.

Micro Filt Disposable filter Funnel
• MOC : Polypropylene
• Filter Size : 47mm
• Filtration area : 9.6 cm2
• Funnel Capacity: 250ml

Disposable M-Funnel
• MOC : Polypropylene
• Filter Size : 47mm
• Filtration area : 9.6 cm2
• Funnel Capacity: 125ml & 250ml

1. Basic Components of Vacuum Filtration System:

• Vacuum Filtration Flask: Also known as a Büchner flask or vacuum flask, this flask holds the liquid being filtered and is connected to the vacuum source.
• Büchner Funnel: A funnel-shaped piece of laboratory equipment that sits on top of the filtration flask. It holds the filter paper and is used for collecting solid residues.
• Filter Paper: A porous paper placed inside the Büchner funnel, designed to allow the liquid to pass through while trapping solid particles.
• Vacuum Source: Usually a vacuum pump or water aspirator, the vacuum source helps to create a pressure difference that speeds up the filtration process.
• Rubber Stopper or Connector: A rubber piece that connects the vacuum flask to the Büchner funnel, ensuring an airtight seal for efficient filtration.
• Vacuum Tubing: Connects the vacuum pump or aspirator to the filtration system.

2. Materials Used:

• Glass: Most vacuum filtration equipment, including the flask and funnel, is made of borosilicate glass, which is durable and resistant to chemicals and heat.
• Rubber: Used in the gaskets and stoppers to ensure a good seal and prevent air from leaking into the system.
• Filter Paper: Typically made from cellulose, it can be treated with chemicals for specific applications (e.g., nylon, PTFE, or other synthetic polymers).

3. Pore Size of Filter Paper:

• Fine Porosity (0.5 to 2 microns): Used for general filtration, like separating precipitates from solutions.
• Coarse Porosity (10 to 100 microns): Used for filtering larger particles from liquids or for removing larger solids during the filtration process.
• Medium Porosity (2 to 10 microns): Used for general-purpose filtration where moderate separation is required.
• Membrane Filters: For finer filtration (e.g., to remove bacteria, fine particles, or to sterilize solutions).

4. Filtration Speed and Flow Rate:

• Faster Filtration: Achieved by applying vacuum suction, which accelerates the process of drawing the liquid through the filter paper. The rate of filtration depends on factors like the pore size of the filter, the viscosity of the liquid, and the vacuum pressure applied.
• Flow Rate: The flow rate typically ranges from 50 mL/min to 500 mL/min depending on the system setup, liquid viscosity, and the size of the filter paper.

5. Types of Vacuum Filtration:

• Standard Vacuum Filtration: Typically used for routine laboratory applications, such as separating precipitates or filtering large volumes of solution.
• Cold Filtration: Used for filtering solutions that require low temperatures to prevent the formation of unwanted crystals or compounds.
• Sterilization: Vacuum filtration can also be used to sterilize liquids by passing them through membrane filters with pore sizes small enough to remove bacteria or other microorganisms (e.g., 0.2 µm filters).

6. Applications of Vacuum Filtration:

• Solid-Liquid Separation: Commonly used to separate precipitates from solutions, particularly after a chemical reaction.
• Purification: Filtering solvents or liquids to remove unwanted particles or contaminants.
• Sterilization: Used to sterilize liquid media, pharmaceuticals, or other solutions by filtering out microorganisms.
• Water Treatment: Employed in laboratory experiments to filter water or other liquids.
• Environmental Analysis: Used in the analysis of air or water samples to capture particulate matter or contaminants.