The standard exposure of e.g. 500T is ISO500, but we recommend overexposing SILBERSALZ35 films by one stop for quality reasons.
The DX-code on our cartridges already provides this information to your camera, which (if compatible) automatically sets your camera to overexpose by one stop. A 500T would tell your camera in that case “I have ISO250”.
If you decide to choose Bleach Bypass processing, we recommend to expose SILBERSALZ35 according to the specified film speed.