Bostwick method is one of the most popular method for measuring of Tomato past consistency. Studies have shown that the accuracy is decreased in Brix over 12. Also, there is not any correlation between consistency measured by Bostwick method and Brix of tomato past. In this project, we studied the effect of Brix and consistency on two varieties of tomato. The results showed that, measuring accuracy is not related to varieties, also there is not any correlation between Brix and and consistency in both varieties. It has been shown that, we can use Percentage of precipitation weight ratio (PPT) for estimating tomato past consistency with high accuracy coefficient on every Brix. By means of this equation, we can evaluate consistency of tomato past accurately.

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