We GRAMCORP PRIVATE LIMITED. Presents you VIGYAANN Pricelist of Scientific Laboratory Glassware, apparatus and instruments. Where glassware were known as BOROKANCH and allied products (apparatus & instruments) as UPAKARAAN. Unless specific arrangements have been made to the contrary, the prices contained in this Pricelist are applicable to all goods despatched time to time.

This catalogue consists of not only glass products but also a lot of allied line of items; this catalogue covers vast range of products that includes interchangeable glassware, volumetric glassware, filtration glassware, general glassware, metal ware and a lot of accessories used in laboratory. We have also introduced a lot of new products in glass with ASTM STANDARDS. Producing high quality of lab ware according to international standard and excellent customer service has helped us to achieve the brand recognition.

We are committed in providing high quality labware products to our customers through strict quality control and timely deliveries. Being close to our customers enables us to understand their needs and deliver the right solution in the shortest possible time. In case you don't find the information that you need you can contact us and we will do our best to help you.

The new edition of our product price list has been further optimized in order to facilitate your daily work when selecting the right consumables for your needs. We would like to draw your attention to the indexing, product grouping & photographic illustration in this edition. All of this is done in order to ensure simplicity in your decision making process. Borosilicate glass from which laboratory ware is made, is truly a wonder material. We've tried to communicate some of the intricate details of this material using contemporary caricature. The brand VIGYAANN is not limited to excellence in product quality & service delivery. Above all, it symbolizes 'TRUST'. This 'TRUST' radiates from our core value of 'Customer Centricity'. It's a promise that VIGYAANN will always keep our customer's interests paramount in everything that we do. In line with this theme, we are rolling out the new logo as the common vigyaann brand across all our offerings.

We've always worked in close connect with our customers. In fact, most products in our portfolio have evolved after inputs from the actual users.


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Technical Information

Glass families

For the purposes of classification, borosilicate glass can be roughly arranged in the following groups, according to their oxide composition (in mass fractions). Characteristic of borosilicate glasses is the presence of substantial amounts of silica (SiO2) and boric oxide (B2O3, >8%) as glass network formers. The amount of boric oxide affects the glass properties in a particular way. Apart from the highly resistant varieties (B2O3 up to a maximum of 13%), there are others that – due to the different way in which the boric oxide is incorporated into the structural network – have only low chemical resistance (B2O3 content over 15%). Hence we differentiate between the following subtypes.

Non-alkaline-earth borosilicate glass (borosilicate glass 3.3)

The B2O3 content for borosilicate glass is typically 12–13% and the SiO2 content over 80%. High chemical durability and low thermal expansion (3.3 × 10−6 K−1) – the lowest of all commercial glasses for large-scale technical applications – make this a multitalented glass material. High-grade borosilicate flat glasses are used in a wide variety of industries, mainly for technical applications thatrequire either good thermal resistance, excellent chemical durability, or high light transmission in combination with a pristine surface quality. Other typical applications for different forms of borosilicate glass include glass tubing, glass piping, glass containers, etc. especially for the chemical industry.

Alkaline-earth-containing borosilicate glasses

In addition to about 75% SiO2 and 8–12% B2O3, these glasses contain up to 5% alkaline earths and alumina (Al2O3). This is a subtype of slightly softer glasses, which have thermal expansions in the range (4.0–5.0) × 10−6 K−1.

High-borate borosilicate glasses

Glasses containing 15–25% B2O3, 65–70% SiO2, and smaller amounts of alkalis and Al2O3 as additional components have low softening points and low thermal expansion. Sealability to metals in the expansion range of tungsten and molybdenum and high electrical insulation are their most important features. The increased B2O3 content reduces the chemical resistance; in this respect, high-borate borosilicate glasses differ widely from non-alkaline-earth and alkaline-earth borosilicate glasses. Among this glasses are also borosilicate glasses that transmit UV-ray down to 180 nm, which combine the best of the borosilicate glass- and the quartz world.



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