What does viscosity actually mean?

 

Viscosity is a measure of a medium's internal resistance to flow. A higher viscosity indicates that the medium is thick flowing - a lower viscosity that it is thin flowing. The term viscosity derives from the typically thick flowing berry juice of the mistletoe plant species (viscum). Birdlime was made from these mistletoes, and "viscous" denotes "thick as birdlime".

Unit of measurement: Pa s or mPa s


BOCHEM offers 2 different digital stirrers, who can stirr media from low until high viscosity:
RS 9000 and RS 9001,
as well as 12 different stirrer blades with different diameter, shaft lenths fom 300-800 mm and 3 different shaft diameters from 7, 8 and 10 mm.
Our stirrer blades are threaded, though you are very flexible with your equipment!

Have a look at the stirrer range:

http://www.bochem.com/bochem/en/Products-p35-Stirring+devices+%26+Stirrer.html


Viscosity of various liquids:

Liquid ():

Viscosity [Pa·s]

Viscosity [cP=mPa·s]

acetone[23]

3.06×10−4

0.306

benzene[23]

6.04×10−4

0.604

castor oil[23]

0.985

985

corn syrup[23]

13.806

1380.6

ethanol[23]

1.074×10−3

1.074

ethylene glycol

1.61×10−2

16. Jan

glycerol (at 20 °C)[24]

01. Feb

1200

HFO-380

2.022

2022

mercury[23]

1.526×10−3

1.526

methanol[23]

5.44×10−4

0.544

motor oil SAE 10 (20 °C)[12]

0.065

65

motor oil SAE 40 (20 °C)[12]

0.319

319

nitrobenzene[23]

1.863×10−3

1.863

liquid nitrogen @ 77K

1.58×10−4

0.158

propanol[23]

1.945×10−3

1.945

olive oil

.081

81

pitch

2.3×108

2.3×1011

sulfuric acid[23]

2.42×10−2

24. Feb

water

8.94×10−4

0.894