Differences between Soft Glass and Pyrex Test Tubes

In the past few years, soft glass has become a cheaper option to Pyrex test tubes. The choice depends on the scientist, chemist, researchers or student planning to use the equipment. For some, the lab equipment has to be of high quality and durable. On the other hand, some people want to equipment to be cheaper. Soft glass and Pyrex have a range of differences. In fact, soft-glass is considerably different from traditional glass varieties. That is why soft glasses have marbled swirls. And, the temperature handled by soft-glass and Pyrex are considerably different. With this being said, here are few differences between soft-glass and Pyrex glass tubes.

Drawbacks of soft glass

Fortunately, the number of negatives in soft glass is considerably low. You don’t have many drawbacks to be concerned about.

A major difference between Pyrex and soft-glass is in its down stem and bowl components. This gives the soft glass its first and most prominent disadvantage. Experts consider the soft glass as a slider bowl system or a pull out bowl. Both the down stem and bowl are designed using glass of cheaper quality. When compared to the rest of the soft glass, the down stem is made of cheaper glass. This is why the lifetime of soft glass pieces is low. Rough handling increases the chances of you breaking soft glass. Fortunately, the cost to replace soft glass is little.

Moving on, soft glass tubes are fired and manufactured at low temperatures. This is why soft glass is not designed to handle excess heat. To be more precise, soft glass is not meant to handle thermal stress. This is why the instances you use soft glass must be chosen wisely. Heat applications can break soft glass easily. So, be mindful of when and why you use soft glass tubes.

Benefits of Pyrex glass tubes

Pyrex glass tubes are a better choice than soft glass or any other variety! It is definitely a choice amongst students, researchers, scientists, collectors or anyone who wishes for a refined piece of equipment. Pyrex glass tubes are clean, sharp and the next level of lab equipment. Indeed, they come with many exclusive benefits.

To begin with, Pyrex glass tubes are made of borosilicate glass. This kind of glass is of high quality and can handle extensive heat abuse. Moreover, Pyrex glass tubes have fixed thickness. When compared to soft glass, Pyrex glasses are thicker. The standard pieces don’t go below 6 mm. Meanwhile, there are Pyrex pieces between 6mm and 12mm in thickness. A thick piece of Pyrex is definitely stronger and more stable than soft glass.

A major reason behind the fame of Pyrex glass tubes would be its ability to handle high firing temperatures. Soft glass doesn’t mimic or even stand close to Pyrex. In most cases, Pyrex is frosted, tinted, or clear glass.

Disadvantages of Pyrex glass

There are no critical drawbacks in Pyrex glass tubes. These test tubes speak of high quality and superiority. They are expensive for a reason!

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