Can be purchased from Motorola by calling their order desk at: 1-800-422-4210
Then give them the part number.

The Part Number for Stabilant Stabilant 22 in the 5ml Field Kit is
Motorola Part Number 1180384V93

The Part Number for Stabilant 22A in the 15 mL bottle is
Motorola Part Number 11-80369E78
 

Please be sure that you give their order desk this information
 
 

As Motorola's Web Site is under revision
the Link to Motorola's web-site may not work -  Motorola