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Plastic Funnels

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Plastic funnels Laboratory funnels made with plastic have displaced glass as a preferred for funneling applications. Though the glass funnels are still popular for better chemical resistance and inertness still plastic funnels are chosen as they are durable and economical. No surprise that in most of the secondary school laboratories plastic funnels are commonly used.

A funnel is essentially a conically shaped pipe, for channelling or funnelling either liquids or fine-grained solids. The plastic funnel fits into containers with a small mouth or opening. There are two main constituents of a plastic funnel or for that matter any funnel. They are a bowl and a spout. A funnel's bowl is the portion at the top shaped like a large bowl. The bowl has a wide diameter which narrows itself as it goes down to take the shape of a cone. There is a hole at the base form where the spout of the funnel is reached.

Plastic funnels are used for transferring solids or liquids into flasks, cylinders, beakers or other containers with narrow neck openings. Plastic funnels are very useful for filling sample bottles with powders or granular material.

Plastic funnels come in a variety of shapes and sizes depending on the quantum of material that is being poured. It is designed to fit all sizes of bottles or containers. The small plastic funnels are ideally suited for filling up small vials, batteries,bottles, hip flasks etc. The funnel's small tip fits nicely into the top of the vials. The plastic funnels are an important constituent in the process of filtration being used with filter papers.

Resins for Manufacturing Plastic Funnels
Some of the material with which plastic funnels are manufactured are the following
Features of Plastic Funnels
Depending upon the application some of the features to look for in plastic funnels de include:
Popular Plastic Funnels
 Polypropylene Funnel Polypropylene Funnel
Economical polypropylene funnels are appropriate for continuous laboratory work as they are unbreakable and durable. Polypropylene funnels comes with features like ridges for preventing vapor lock. They can also be autoclaved at around 120º C. Polypropylene funnels are ideal for use with organic solvents and comparatively stronger acids & alkalis.

Polypropylene Analytical Funnel
Polypropylene analytical funnels as the name suggests are designed specifically for analytical chemistry applications. The polypropylene analytical funnel comes with a variety of designs. One particular design for a quick filtration process, has the body of the funnel at a precise 600 angle. They are provided with internal and external ribs. Polypropylene analytical funnels are compatible with standard size filter papers. They can also be autoclaved.

Micro funnelsMicro Funnels
Micro funnels are meant for micro applications such as filling burettes, manometers or other small containers or bottles. Generally made of polypropylene they are also steam autoclavable at around 121º C

Plastic Separatory FunnelPlastic Separatory Funnel
Plastic separatory funnel provides excellent strength and contact clarity and strength. They also come in a variety of sizes and designs. Separatory funnels made with polypropylene are very popular. They show excellent resistance against all the chemicals and can also be autoclaved. They are supplied with leakproof screw closure.

Seperatory funnel holderSeperatory Funnel Holder
Separatory funnel holder is a standard accessory with a separatory funnel It is molded with non-corrosive polypropylene. The funnel holder has a front opening for giving a clear view of the solution and permits an unhindered positioning of separating funnels. Two tepered wedges provided firm grip on the rods.

Plastic Funnel made of LDPELDPE Funnels
LDPE funnels are very popular for transferring liquids and feature both internal as well as external ribbing. The external ribbing aids air release. LDPE funnels are able to withstand high temperatures.

HDPE Funnels
Rigidly constructed heavy duty HDPE funnels suits vacuum filtration very well. The HDPE funnels can also with stand high temperatures.

Plastic Buchner FunnelsPlastic Buchner Funnels
Plastic buchner funnels are generally composed of two pieces and are used for filtration process. For making plastic buchner funnels ar chemical-resistant polyethylene is a good choice.

Powder Funnel
Fast and efficient powder funnels are ideal for student use for transferring powders or large volume of liquids.

Disposable FunnelsDisposable Funnels
Disposable funnels are economical single use funnels. Transparent polystyrene or translucent polypropylene is generally used for making them. Some of the features to look for in disposable funnels include
Disposable Long Stem Funnels
For making disposable long stem funnels are made with polypropylene. Poly propylene provides a number of crucial advantages like chemical resistance, nonstickability, nonstaining surface etc. Cone and stem are made extra rigid with more ribs for withstanding the rigours of autoclaving.

Disposable Short Stem Funnels
Disposable short stem funnels are made using clear and tough molded polypropylene. These funnels can withstand alkalis, acids and organic solvents. Some of the features include
Funnel HolderFunnel Holder
For making funnel holder non-corrosive high density polyethylene is an excellent choice. Funnel holder along with a clamp consist of two bushings and support rods.


PTFE FunnelsPTFE Funnels
As PTFE is a material with excellent physical and chemical properties, no doubt PTFE funnels can be used under adverse conditions. Some of the exceptional features of PTFE funnels are as under:
PFA Funnels
Inert and non-contaminating PFA funnels finds extensive use in speciality lab like electronics and semiconductor, environmental as well as biotech labs. Unique features of PFA funnels include:
Polystyrene Funnels
Polystyrene funnels are suitable for funneling applications involving aqueous solutions and weak to mild acidic or alkali solutions. These funnels can also be used for single use applications. Typical features include non- wetting surfaces, ribbed interiors, tapered angles.


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