Magnetic Particle Testing

According to ASTM E709-95 in using prods having a spacing of 19 mm (3/4 inches) and above, the magnetizing current shall be:

From 90 to 110 A/25 mm (1 inch)

From 100 to 125 A/25 mm (1 inch)

From 90 to 120 A/ 25 mm (1 inch)

From 100 to 200 A/25 mm (1 inch)