Laboratory centrifuge. A laboratory centrifuge is a piece of laboratory equipment, driven by a motor, which spins liquid samples at high speed. There are various types of centrifuges, depending on the size and the sample capacity.
In American football, each team is allowed 11 men on the field during a play, for a total of 22 players plus the officials.  If there are more than 11 players on the field foâ¦r a play, the team with too many players may be assessed a 5-yard penalty and any play that occurred may be nullified (at the discretion of the opposing team).
Altogether how many players and officials are on the field on NFl football game? Both teams have 11 players (22 total) on the field for one play and there are seven officials. That would make 29 people altogether on the field for a play in NFL football. if you're talking about football (not American football) then there are 2 teams 11 players each |+ 3 or 5 referees. 11 players from each team, and seven officials. (The number of officials will vary in high school or junior college.) Of the seven officials, some might be just off the field â¦ of play, such as the Head Linesman and the Line Judge during a snap, or the two officials posted on the think white line under the goalposts during a try.