What is a blood marker pen, and how do you use it?
469875
http://www.saburchill.com/IBbiology/ICT/datalogging/001.html
799884
Bloodstain pattern analysis is used to determine the direction and (subjectively) the speed of a drop of blood at an incident scene.  Round drops are typically indicative of blood falling from above.  Blood drops that land at oblique angles will form a teardrop shape.  The "tail" end of the pattern points to the direction that the blood came from and the length of the tail is an indicator of speed (the longer the tail, the greater the speed).  Inferences about the incident can possibly drawn from there, but are usually corroborated with other physical evidence.\n\nLarger pools of blood can be used to determine the location of a body or the extent of bleeding or some other needed information.  Again, this is usually corroborated with other physical evidence and its usefullness is determined case by case.
258600
It is a synthetic solution, thicker than normal ink.  Invented by Mr. Biro for use in high flying aeroplanes as the air pressure used to make the ordinary fountain pens leak.  In ancient times, berries and all sorts of other things were used to make colourings which were used as ink in illuminated manuscripts.
812946
Chemical reagents are not used to dilute blood. Depending on the test needed, some have a non clotting agent put in. Others let it clot and take off the serum to test for various reasons. What you are probably referring to is an agent to either stop clotting or preserve the specimen.
684310
Ask the bloodtaker to draw your blood while you are lying down on an examination table. That's what we do with nervous or needle-phobic patients, so that if they do feel faint, they're already lying down. That's what we do at the hospital test center.\n\nSo always let them know about your tendency to feel faint when blood is drawn and they can take precautions.
995974
Stylus: A sharp, pointed instrument used for writing, marking, or engraving.  use your hands.  you choose me best
45524
the common use / popularity of ball-point pens is attributed to space travel ... fountain pens wont work in space. But have to verify this.
492660
as far as i know its used for DNA figerprinting in electophoresis (i didnt spell that right).  basically you use a gel like substance, put DNA fragments in it (mixed w. dye) and put this in a solution and hook the one end of the whole device to a negative battery side or something and the other end to a positive side and the DNA fragments will seperate and u can use it to match up DNA samples w. people etc.
1061526
It's called a piece of paper and a pen. Oh, put the pen to the paper, then it creates something called writing. Pretty cool, give it a shot. Might just work for you.
518975
I don't know Singapore but you can fing what you want in a good Pharmacy. If you want to know your blood group ask for Anti-A, Anti-B and Anti-Rh sera. Few drops of your blood(3drops) and add to each a drop from each bottle and see if there's clumping in blood (that's it kings turn into dots):\n\nIf it clumps with anti-A aloe so you're A\nIf it clumps with anti-B alone so you're B\nIf it clumps with anti-A and b so you're AB\nIf it doesn't clump with anti-A or B then you're O\nRegarding the abti-Rh..if there's clumping you're positive (+) and if not you're negative (-) So that you become O+ or O- or whatever
407821
Donate blood.\nMany centers offer incentives.  There is much they need to know about your blood and so they perform numerous tests.  At your request, they may well offer that info to you.
399503
if you mean a Light pen, go here: \nhttp://en.wikipedia.org/wiki/Light_pen
882053
The ink is equal to the blood.Why... I don't know..they flow easy as a river but are both damned and dammed.I cry about it but I am not a vessel for an essay.Let it Flow.
11720
Gravity.  For ball point pens, the ball in the tip of pen rubs against the bottom of a tube of very sticky ink.  A bit of the ink rubs onto the ball and then onto the paper as you write.  Because of gravity, more ink moves down the tube against the ball and it keeps working.  But if you try to write with the pen upside down, it will stop working.\n\nBack in the 1970s a company invented a "space pen" with a kind of piston that kept pushing the ink out even without gravity, and the astronauts used it.  There's an urban legend that NASA spent millions on this, while the Russians just used pencils, but that's not true.  (See Snopes story below.)
505961
It'a pen that doesn't have sex, do drugs or drink.  :o)
11100
Use a black sharpie...works like a charm!
824777
i dont know what u mean by the second question but for blood, i just make a tiny circle and make it red so it looks like blood.