no i do not mean ease of use. I want a truly precise machine. I dont believe looking at a minicus on a graduated cylinder is the most accurate way to measure something, trained or not, i put little faith in human eyes, at least for the tolerances im looking to determine.
Talk to some more teachers, about some more definitions. Accuracy
is a measure of correct values. Manual procedures are very accurate, our eyes and brains are very good at compensating for reading errors. Manual procedures have somewhat less precision
than instrumental procedures, because instruments are less prone to tiring out, but they are not more accurate than manual procedures, often less accurate. Instruments also have automation capabilities, and better record keeping capabilities and more immune to bias, but none of those concepts are part of the scientific definitions of accuracy and precision. I suspected you didn't know which one you meant, when I worded my first answer, and you shouldn't mix them up in the same paragraph like you did where I quoted above.
If i used a graduated cylinder everything im measuring would appear identical because im looking for very tiny inconsistencies ( almost like trying to remove the 1% contaiminates in a 99 % solution , very tough i know but its what i want).
You can do that, but you may not get the accuracy you want, with the methods you describe, because ...
I want something that measures volume that has the equivalant precesion of a lab scale.
So this 1% value needs to be determined as 0.9998% or 1.010 %, if I understand you? But by volume displacement? No, see if I wanted to do that, I'd use the mass, on a laboratory scale, and calculate volume using the density.
Or I'd use a device like fledarmus:
linked to, and a laboratory balance, to get density and mass, to calculate volume.
i asked my chemistry teacher if such equipment exists , she said yes for commerical labs. This is the type of machine i am looking to buy. Im really just looking for someone to give me a company name where i can stat digging. I checked out Ohaus and Denver instruments , they do not sell the type of device im looking for.
And she said this device's name is ... ? Because I'd like to see how it works. I've used a variety of glassware, from volumetric flasks, to graduated cylinders, to pipettes both manual and electronic, to 2 or 3 decimal places with good accuracy (compared to a NIST standard) and reasonable precision (adequate to work to the 6 sigma standard.) So yeah, manual is a possibility still in this world.
i apperciate any input ,thanks
Remember that you wrote that once you've re-read my responses.