Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_26211058_1 ( specimen_weight_size VARCHAR, calculated_activity___ci__ VARCHAR )

### Question ###
If the calculated activity (CI) is 4.96 10 11, what is the specimen weight/size?

### Accurate SQL ###

SELECT specimen_weight_size FROM table_26211058_1 WHERE calculated_activity___ci__ = "4.96×10 −11"