The 'Delta 3200' product is not actually rated at ISO 3200/36°. Its speed is only 1000/31° following the ISO methods, but it has a very wide exposure latitude.
The 'Delta 3200' product doesn't actually meet the ISO 3200/36° standard, but it achieves a speed of 1000/31° according to ISO guidelines, and it offers a remarkably flexible range of exposure options.