8 times unless its a lt blue tube which is 4 times
Inverting a tube of blood will not prevent it clotting. Only an anticoagulant will do this, the different coloured tops on blood samples refer to the different anticoagulants or lack thereof inside the tubes. Inverting the tube is done to mix blood samples that have settled gently inverting the tube 6-10 times is enough to mix the blood. Inverting the tube more than this or doing it too violently could trigger clotting even in a sample containing an anticoagulant.
Many test tubes use EDTA as the anticoagulant - but there are other anticoagulants used as well. Be more specific if you wish a more specific answer.
It used 5200 vacuum tubes.
there is many tubes on internet like youtube redtube blacktube
The Harvard Mark IV had about 4000 tubes.
Who knows how many things he inverted. But if you mean invent, like i think you do, none. He was not an inventor.
There are many products made from P tubes. there are Ibm products that are used everyday and also P tubes from vacuums that help clean houses. P tubes are also used for LED tubes.
None. Women have their fallopian tubes tied when they no longer want to get pregnant.