This was a phone screen for a laboratory-based temp position. It was a half hour long and there were 3 people on the line (yes, even phone screens are panel these days). They first described the position, then asked me about my previous experience and then asked the specific questions about my past. The questions were a little tough for a phone screen...the type of questions that are generally saved for an in-person interview. They then let me know that they would be phone screening several other candidates & would select one or two to have an in-person interview.