"In 1889 the "Standard Kilogramme" was created. This was supposed to be the same as 1 litre of distilled water at its maximum density -ie. at a temperature of 4 degrees celsius. The LITRE then became officially defined as 1 kilogramme of pure water at 4°C. Unfortunately there was a very small error and it was not until 1907 that it was detected. The "1889 Standard kilogramme" was discovered to have a mass of 1000.028 cc of pure water at 4°C and so it followed that a LITRE was 1000.028 cc."
"So 1 millilitre then equalled 1.000028 cc and 1 cc equalled 0.999972 ml."
"1ml does not equal 1cc"
Is it really true?
Well, we'll just take a look at Wikipedia. According to it, there was a few changes in the definition a long time ago. Here's the problem.
Prior to 1964, it was indeed true that 1 L equals 1.000028 dm3. However, in 1964, the original definition was reverted to, and thus the litre was once again defined in exact relation to the metre, as another name for the cubic decimetre, that is, exactly 1 dm3.
Now, let's just do some conversion
If 1 L used to equal 1.000028 dm3 prior to 1964, then 1 ml used to equal 1.000028 cc. However, it was changed in 1964, so 1 L equals 1 dm3, and 1 ml equals exactly 1 cc.
So apparently that dude used the wrong (or at least outdated) reference. This is why you should check the date of the reference you're using. If it's too old then you better find a newer one, because it might be no longer relevant.
Is it really true?
Well, we'll just take a look at Wikipedia. According to it, there was a few changes in the definition a long time ago. Here's the problem.
Prior to 1964, it was indeed true that 1 L equals 1.000028 dm3. However, in 1964, the original definition was reverted to, and thus the litre was once again defined in exact relation to the metre, as another name for the cubic decimetre, that is, exactly 1 dm3.
Now, let's just do some conversion
If 1 L used to equal 1.000028 dm3 prior to 1964, then 1 ml used to equal 1.000028 cc. However, it was changed in 1964, so 1 L equals 1 dm3, and 1 ml equals exactly 1 cc.
So apparently that dude used the wrong (or at least outdated) reference. This is why you should check the date of the reference you're using. If it's too old then you better find a newer one, because it might be no longer relevant.
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