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Component: (Network and Table)
Network
00000040 - Disclosure - Stockholders' Equity - Schedule of Warrants Outstanding (Details)
(http://purebio.com/role/StockholdersEquity-ScheduleOfWarrantsOutstandingDetails)
TableStatement [Table]
Slicers (applies to each fact value in each table cell)
Reporting Entity [Axis]0001006028 (http://www.sec.gov/CIK)
Statement [Line Items]Period [Axis]
2016-07-31
Class of Warrant or Right [Axis]
12/14/16 [Member]12/24/16 [Member]02/24/17 [Member]09/17/17 [Member]01/24/18 [Member]08/29/19 [Member]11/23/20 [Member]Class of Warrant or Right [Domain]
Warrant exercise price
3.61  
0.2  
1  
1.38  
0.83  
0.75  
0.45  
 
Warrant outstanding
25,000  
9,709  
100,000  
113,520  
375,000  
4,210,980  
2,222,217  
7,056,426