Aspects of vapor pressure osmometry
β Scribed by C. E. M. Morris
- Publisher
- John Wiley and Sons
- Year
- 1977
- Tongue
- English
- Weight
- 716 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0021-8995
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
In this work, we determined the number average molecular weight of some polyethylene glycols (PEGs) using vapor pressure osmometry. In general, this technique works with a plot of Dr p /c p versus c p (concentration) and the molecular weight is determined by the calibration constant obtained from th
The Wescan Model 232-A' VPO was modified with a 12 volt regulated power supply for supplying bridge current and with thermocouples to allow for direct digital readout of the syringe box and measuring chamber temperatures. The modified instrument was used to measure m,, of standard (NBS) polyethylene
Osmolality increases with pCO 2 in bioreactors with pH control, and it has been shown that osmolality compensation by decreasing the basal NaCl concentration partially mitigates the adverse effects of elevated pCO 2 on animal cell growth, protein production, and glycosylation. Thus, measurement of o