There most important difference between EAST and EAST 2 relates to the database with the data describing the EU exposure scenarios. In EAST 2 the data are taken from the most recent EFSA PRIMo spreadsheet tool. This spreadsheet was updated by EFSA in 2019, leading to version 3.1. In EAST an older version of the PRIMo spreadsheet was used.
There are no changes between EAST and EAST 2 with reagrd to the selection of chemicals.
In the update to PRIMo 3.1, a change for the commodities can be noted. In EAST 2 the commodities are presented in a series of lists. Now one can select the appropriate commodity by searching the database (as in EAST), or by selection from a drop down list. This procedure is presented in EAST 2 in a separate page, before the input of concentration data.
The input of body weights in EAST 2 is moved into Your exposure scenario. Consequently one can not select the body weight any more for the EU scenarios. Those data are coming from the PRIMo 3.1 database; the body weight of the consumer is now given for each country separately.
It can be noticed that the list with EU scenarios in EAST 2 is longer than in EAST. Here one will find the EU countries as in EAST, but besides these one can also notice additional scenarios with the notification (high percentile). These are taken from the data in PRIMo 3.1 dealing with acute intake of large consumption quantities. Their results are best to be evaluated using an ARfD.
For Your exposure scenario a descriptive title can be given, for identification.
In EAST 2 the results of the calculation are presented in a new tabular format. Each row will show the scenarios title, the body weight for that scenario, and consumption and exposure data (both per day, and per kg bodyweight). The colums can sometimes be messy, when many leading zeros are needed to express the values. Next it will show the evaluation, and the Limit of Rejection and the Maximum Consumption Quantity for each scenario.
New in EAST 2 is the possibility to download of the results in a PDF file. Its filename uses the date and time to keep the order of files. After the download the system will return to the Exposure Assessment page.
The Exposure Assessment page has another button, entitled New Concentration. After its selection the system will show a short page where you can provide another value for the concentration and/or the Correction for composition and the Processing factor. After pressing Calculate on this new page, the system will show the Exposure Assessment page again, now with the results of the new input, using the same scenarios as the first. In this way one can evaluate a series of numbers without repeating the input of chemical, commodity, and scenarios.