What is the melting point of paraffin wax and the temperature it is kept at in a wax processor?

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Multiple Choice

What is the melting point of paraffin wax and the temperature it is kept at in a wax processor?

Paraffin embedding relies on a wax that melts enough to flow around and infiltrate tissue, but not so hot that it damages the specimen. The typical melting point for paraffin wax used in histology sits in the mid-50s Celsius (about 54–58°C). To keep the wax in a fluid state for uniform infiltration, the wax processor is maintained at a temperature just above that range, around 58–60°C. This balance ensures the wax remains liquid enough to permeate tissues without causing thermal damage or excessive softening. If the melting point were as low as 30–45°C, the wax would be less stable and could start to solidify at room temperatures, hindering infiltration. If the bath were much higher, say around 70°C, the heat could risk tissue damage and alter embedding quality. Hence the paired values of 54–58°C for the wax and 58–60°C for the processor best fit practical histology workflows.

Paraffin embedding relies on a wax that melts enough to flow around and infiltrate tissue, but not so hot that it damages the specimen. The typical melting point for paraffin wax used in histology sits in the mid-50s Celsius (about 54–58°C). To keep the wax in a fluid state for uniform infiltration, the wax processor is maintained at a temperature just above that range, around 58–60°C. This balance ensures the wax remains liquid enough to permeate tissues without causing thermal damage or excessive softening.

If the melting point were as low as 30–45°C, the wax would be less stable and could start to solidify at room temperatures, hindering infiltration. If the bath were much higher, say around 70°C, the heat could risk tissue damage and alter embedding quality. Hence the paired values of 54–58°C for the wax and 58–60°C for the processor best fit practical histology workflows.

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