AC spark testers are necessary when analyzing detachable agitators and various machines which can be completely glassed and can’t be grounded. I am able to revoke my consent at any time with outcome for the future by sending an e-mail to [email protected] or by clicking around the "unsubscribe" hyperlink https://mylestrmgb.bloggazza.com/29340045/glass-lined-reactor-ppt-an-overview