Temperature resistant pH buffers for use at low temperatures
US8183046B2 · kind B2 · utility
82Cited by
3References
15Claims
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Key dates
| Filing date | Jan 11, 2007 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Mar 26, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/108331
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for preparing a composition that includes selecting a pH of the composition; selecting a first buffer with a negative temperature coefficient; selecting a second buffer with a positive temperature coefficient; and forming the composition comprising the first buffer and the second buffer. The composition has an average temperature coefficient, ΔpH/ΔT(Ta,Tb)≦1×10−3 pH-unit/K and a ΔpH(Ta,Tb)≦0.31 pH-unit for Ta=4 K and Tb=313 K.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.