durga laboratory glass work Sikandra, Agra, Uttar Pradesh

DULAB™ brand low form bottles made of borosilicate glass, with Standard taper glass stopper. Bottom part of stopper is sealed.

Volumetric pipettes are glass tubes used to measure small liquid volumes very accurately. However, each pipette is designed to only measure one volume. Each volumetric pipette is unique. Some are straight tubes, while others have a bulb-shaped reservoir in the middle. The etched line on the pipette marks the level at which the pipette will contain the designated volume. Volumetric pipettes come in many different sizes, depending on the amount of liquid that needs to be measured / transferred.

Flasks feature amber colored glass for the protection of light-sensitive contents, a fine white graduation line, and marking spot. Graduated to contain. Flasks include a glass stopper.

Test tubes are important pieces of laboratory equipment and have a wide variety of uses in the laboratory. They are very basic in structure, but useful in many different fields of science. Test tubes are slender containers that hold small amounts of liquid and are used in scientific experiments. They can range between 50 mm to 250 mm in length and 13 and 20 mm in width. Test tubes are usually made of glass or plastic, but the ones that are made of glass are able to be used in heat-up situations. These tubes may also be known as boiling tubes, as they can be used to raise solutions and reactions to boiling temperature.

Stoppers are used with laboratory glassware such as flasks, mixing cylinders and separatory funnels. Hollow, hexagonal head medium length Standard Taper stopper that is easily gripped. May be set on the flattened top to avoid contamination of the ground surface, Manufactured from 33 expansion, low extractable borosilicate glass

Manufactured of borosilicate glass, These solution bottles feature a tooled top narrow mouth for an accurate rubber stopper fit. Stoppers are not included.

Funnels may be used to separate solids from liquids, liquids from liquids and occasionally for pouring something into a container. DULAB™ brand funnels are available in a comprehensive range for a variety of such applications. Separating funnels come in globe and pear shapes with solid ground glass, PTFE and BOROFLO stopcocks and interchangeable solid glass stoppers. These funnels are made from specially molded blanks. Stopcock bores, body openings and stems are carefully aligned to provide smooth, even liquid flow with fast cut-off. The sturdy design of DULAB™ brand funnels make them excellent for rack work.

Round-head style glass stoppers are available in a variety of lengths and sizes. Stoppers are available in hollow or solid types. All stoppers are manufactured from borosilicate glass.

A burette is a vertical cylindrical piece of laboratory glassware with a volumetric graduation etched permanently on its full length and a precision tap, or stopcock with plug and bore, on the bottom. The commonly used stopcocks can be a ground-glass barrel or a plastic plug made of Teflon depending on the liquid to be carried. It is used to dispense known amounts of a liquid reagent in experiments for which such precision is necessary, such as in a volumetric analysis. Burettes are extremely accurate, and have very small accuracy tolerances. Delivery time of this Burette is 60 sec. to 90 sec.

DULAB™ glass funnels with short, wide stems are great for transferring powders or liquids. Constructed with a heavy uniform wall and a strong, fire polished rim and stem providing a long service life. Funnels have high resistance to chemical attack and mechanical and thermal shock.

Glass dishes feature reinforced beaded edges to resist mechanical breakage and to aid in centering the bottom inside of the cover. The material remains clear after repeated wet or dry sterilization cycles.

  Heavy-duty, reusable storage containers for media and other biological solutions. Low-expansion borosilicate glass provides greater thermal strength. Bottles have permanent white enamel graduations and a marking spot. Sizes 100mL and above feature a glass bead that indicates full capacity line.

Measuring Cylinder ‘H’ BaseDULAB™ Measuring cylinders are for holding measuring varying amounts of liquids. Available in class “B” with line graduation. For additional differentiation, the measuring cylinders “B” class measuring cylinders a white graduation. Volume content tolerances for measuring and mixing cylinders conform to ISO accuracy limits.Thus the desired concentration can be precisely created.

Liebig condensers are made of glass and consist of two main parts: a straight cylindrical tube surrounded by an enclosed glass jacket with two side arms at either end of the jacket on opposite sides. All condensers (in general, not just Liebig-type) are used to cool gases to a point where they will liquefy, or condense, back into their liquid form, so that they may be collected in a separate container. Most commonly, condensers will be used in conjunction with a distilling flask or similar piece of glassware. The substance being condensed travels through the central cylindrical tube. The outer jacket is filled with a continuous flow of cool water from the lab sink. The water comes in through the sidearm at the bottom end of the flask, and exits out of the sidearm at the top of the flask.

Of all the common laboratory test methods, the Kjeldahl method for determining nitrogen subjects the boiling flask to the most severe thermal and chemical abuse. These round bottom Kjeldahl Flasks, specially styled, have long tooled finished necks for extra strength and uniform stopper fit (stoppers not included). Wall thickness of the borosilicate glass is controlled to offer the optimum balance between thermal shock and chemical resistance.

Iodine flask used in the analysis of dry shellac and shellac varnishes with Wijs iodine monochloride solution and may be used to determine the total iodine value of oils, fatty acids and bodied oils with Rosenmund-Kuhnhenn reagent ). The 500 ml is used in the testing of drying oils for use in paints and varnishes, either with Wijs solution or with Hanus iodine-bromine solution.

These High Strength Glass Centrifuge Tubes come in 10 mL to 50 mL sizes. They are reusable and are manufactured from Type 1, Class B borosilicate glass. They have been chemically strengthened to achieve a greater mechanical strength than standard borosilicate centrifuge tubes.

Heavy-duty ‘Tall Form’ beakers specifically designed to offer the best mechanical strength under harsh conditions, such as mechanized washing operations. Sizes 250ml and larger have a double graduated metric scale to indicate approximate content.

These uncalibrated borosilicate glass bottles are excellent for determining the specific gravity of liquids. Include a ground glass stopper with a hole to allow air to escape. Available in 5ml to 100ml sizes.

A pipette with a plain, narrow tube drawn out to a tip and graduated uniformly along its length. Calibration marks maybe confined to the stem or extend to the tip.

Burettes are usually made of glass and contain many markings, called graduations. Burettes are used to measure and dispense liquid volumes accurately. Usually each major division is marked with a number, and the reader must count the number of graduations present between each major division. Simple division reveals the volume represented by each mark on the cylinder. For instance, if the major divisions are 10mL, 20mL, 30mL, etc., and there are ten graduations in between each of those divisions, then each line represents 1mL (10mL ÷ 10 divisions = 1mL/division). Delivery time of Burette is 60 sec. to 90 sec.

Glass desiccators have the best visibility without exposure when drying, preserving, or storing sensitive samples. Circular designs are most common, but Abderhalden linear drying apparatuses are also available. The uniform, thick-walled construction maintains tight seal while the overall shape allows easy content retrieval. Fix a vacuum to the stopcock to accelerate drying process. The reusable, glass desiccators come in different volumes to fit any application procedure. Specially designed enclosures do not require flange maintenance greasing.

Funnels can be made of borosilicate glass. However, glass is a preferable material, due to its resistance to chemical reactivity. A funnel consists of two main parts: a conical-shaped top and a long cylindrical stem at the bottom. Funnels are used for transferring liquids to containers with small openings, in order to prevent spills. They can also be used with filter paper in the process of filtration. Funnels come in many different sizes, depending on the amount of material being poured through.

Filter Flask Manufactured from borosilicate 3.3 expansion glass. Heavy wall construction, this flask comes with a glass hose connector and is suitable for vacuum filtration in a laboratory.Flasks have a beaded top that provides an excellent fit for rubber stoppers. Weight & Range of Filter Flasks: 50 Ml – 65 Gms., 100 Ml – 95 Gms., 250 Ml – 180 Gms., 500 Ml – 365 Gms., 1000 Ml – 460 Gms., 2000 Ml – 1250 Gms., 5000 Ml – 2500 Gms.