Patent · US Expired

Stable water standard

US7416894B2 · kind B2 · utility

0Cited by

6References

17Claims

0Family size

Assignee

Merck Patent GmbH · DE

Inventors

Silke Gruenke · Bremen, DE
Stefanie Bauer · Straubing, DE

Key dates

Filing date	Jul 14, 2004
Grant date	Aug 26, 2008
Priority date	—
Expiry date	Nov 23, 2024

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T436/25
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to water standards that are producible by grounding and mixing at least one component abounding in water and one water-free or low water component each. The inventive water standards are characterized by a good storage stability. They are suitable for the calibration or the inspection of devices to determine the water content after thermal release, especially for determining the water content according to Karl Fischer in combination with a Karl Fischer oven (Karl-Fischer oven technique).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.