Tissue cassettes or better known as Tissue Embedding and Processing Cassettes are engineered in such a way that they can be used manually when doing tests in laboratories or simply need to label a scientific instrument. Tissue cassettes are made up of a substance known as Acetyl Polymer. This particular substance is a high density polymer, which allows room to keep the tested material completely absorbed into the solution. These cassettes are built in such a way that there are slots in them for allowing the flow of liquid through the material which is put in them, in other words the substance which is put inside the slot of the tissue cassette in takes all the liquid which is washed over it for testing and doing experiments. It would be wise to mention here that these cassettes are strongly built to with stand the histological solvents, hence it is a must have apparatus when considering to do medical or scientific experiments.

Manufacturers, for the sake of ease and efficiency of the users, also produce the moulds from all sorts of materials designed to stand different liquids in different experiments. These companies also manufacture stainless steel moulds that are used in preservation experiments. Others also produce these in different colors and sizes to allow different specimens to stay distinct from others. For easy identifications, there are empty name slots on these cassettes, which can take any name the user desires. These slots too, just like the cassettes themselves can withstand the immense reactivity of the histological liquids that the specimens are soaked in.

Larger cassettes come in plastic boxes that are strategically designed to ensure that the cassettes are free from any damage or trauma to the specimens. Larger ones are available in wooden boxes that can hold more liquid and protect them too. For easy transportability, the manufacturers are make cardboard box holders, that are place vertically into slots and have a protruding slot to help easy removal of the slides. This can help the portability of the cassettes without any extra effort.

In order to control the flow and amount of liquid that comes into contact with the specimen, there are many varieties of cassettes available. All of these vary with how many holes that have. For faster processing, the number of holes is higher. However, the gaps cannot be larger in size because otherwise, the specimen can escape the cassette. The cassettes are also made heavy enough so it settles down in the liquid instead of just floating in it. This again allows for effective experimentations.

Over the years, the chemical tools production sector has undergone immense proliferations and innovations. The manufacturers always try to find ways of producing effective and efficient tools to help convenient experiments. One of these innovations has been the plastic storage drawers where the embedded specimens can be stores. Each drawer is capable of holding up to 165 cassettes. The drawers can be very easily places inside a cool place to protect the specimens under study and even in freezers to preserve the items that is being experimented on.

Many times, tissue engineering involves the use of pathogens or antibodies. In these cases these tools may need to places in an enclosed yet sealed area. For small dishes, plastic bags are available that can be very effectively be sealed to ensure that nothing escapes or enters the experiment, otherwise, the results can vary greatly be altered.

Over all, the introduction of these reactive-resistant cassettes has been helpful for experimenters worldwide. Now they can very effectively and efficiently carry out the experiments without wasting time setting up the appropriate physical conditions.