APPARATUS AND METHOD TO MEASURE CONCENTRATION OF DISINFECTANT IN MEDICAL DEVICE REPROCESSING SYSTEM

(19)

(11)

EP 4 257 074 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A2)

(48)	Corrigendum issued on:
	20.12.2023 Bulletin 2023/51

(43)	Date of publication:
	11.10.2023 Bulletin 2023/41

(21)	Application number: 23194106.3

(22)	Date of filing: 17.05.2017

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International Patent Classification (IPC):

A61B 90/70^(2016.01)

(52)	Cooperative Patent Classification (CPC):
	A61B 1/00057; A61B 1/123; A61B 1/125; A61L 2/24; A61L 2202/17; A61B 2090/701; G01N 21/80; A61B 90/70; A61L 2/18; A61L 2202/14; A61L 2202/15; A61L 2202/24; G01N 31/226; G01N 31/221

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

18.05.2016 US 201615157952

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	20201252.2 / 3789762
	17171501.4 / 3245939

(71)	Applicant: ASP Global Manufacturing GmbH
	8207 Schaffhausen (CH)

(72)	Inventors:
	FANG, Yan Irvine 92618 (US) NGUYEN, Nick N. Irvine 92618 (US) LU, Kaitao Irvine 92618 (US)

(74)	Representative: Regimbeau
	20, rue de Chazelles 75847 Paris Cedex 17 75847 Paris Cedex 17 (FR)


	Remarks:
	This application was filed on 29-08-2023 as a divisional application to the application mentioned under INID code 62.

(54)	APPARATUS AND METHOD TO MEASURE CONCENTRATION OF DISINFECTANT IN MEDICAL DEVICE REPROCESSING SYSTEM

(57) The invention relates to a reagent solution comprising raw materials, wherein the raw materials comprise:
(a) a sulfite selected from sodium sulfite, sodium bisulfite and combinations thereof;
(b) a pH indicator/absorbance species selected from phenolphthalein, O-cresolphthalein, p-naphtholbenzene, ethyl-bis(2,4-dimethylphenyl)acetate and thymolphthalein;
(c) an acid selected from hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, organic carboxylic acids and combinations thereof;
(d) isopropanol; and
(e) water;
wherein the reagent solution is configured to be mixed to form a ready-to-use solution that reacts with ortho-phthalaldehyde concentration in a liquid sample.