Sample-holding element, analysis set, and method for analyzing a liquid, in particular a cooling lubricant emulsion

US10697954B2 · kind B2 · utility

Assignee

• Fuchs Petrolub SE · DE

Inventors

• Christine Fuchs · Düsseldorf, DE
• Heinz Gerhard Theis · Wassertrüdingen, DE

Key dates

• Filing date: Jul 28, 2017
• Grant date: Jun 30, 2020
• Expiry date: Jul 28, 2037

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2021/0389
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a sample-holding element (20) for a liquid sample for the simultaneous analysis of three or more chemico-physical parameters of the liquid by means of an analysis device. The sample-holding element (20) has a sample-holding chamber (31), which can be filled with the liquid, wherein the sample-holding element (20) has at least three measurement points (24, 25, 26, 26N, 27) arranged adjacent to each other, which are distributed over the sample-holding chamber (31), wherein two of the measurement points (24, 25) are a photonic measurement point (24) and a refractive-index measurement point (25) and wherein the at least one further measurement point is selected from the group comprising at least a pH measurement point (26), a conductivity measurement point (27) and a germ measurement point. The sample-holding element (20) is a planar element (20) that is double-walled at least in some sections and that has plates (30, 30′), which are arranged on each other in a plane-parallel manner and are connected to each other at the edges thereof at least in some sections, wherein the sample-holding chamber (31) is formed as a planar gap between the plates (30, 30′) and th…