A determination system includes: type determination means for acquiring determination information for determining a type of an indicator that has a discoloration area, a color of which changes according to an achievement degree of a sterilization process, and determining the type of the indicator; measurement means for measuring color information regarding the discoloration area; and achievement degree determination means for determining the achievement degree of the sterilization process based on the color information regarding the discoloration area measured by the measurement means, according to a determination criterion corresponding to the type of the indicator determined by the type determination means.

A class 5 chemical indicator color may be imaged such that a color of the indicator may be determined and compared to a color-value threshold indicative of an efficacious sterilization procedure. Color changes of the indicator during a sterilization procedure are typically not uniform. As such, colors on the indicator may be averaged and then compared to the color-value threshold to determine if the procedure has been efficacious or if additional exposure to a sterilant may be desired. Color values and color-value thresholds may be based on, e.g., the L*a*b* color model or a grayscale color model.

Indicator (22) for process challenge devices (PCDs) to monitor sterilizing processes, comprising a plurality of indicator areas (50, 54, 58, 62, 66) which react with a sterilizing agent and which are arranged spaced apart on a common carrier element (18) in a longitudinal direction (70) of said carrier element (18), whereby said carrier element (18) is built tapered along its longitudinal direction (70).

The present disclosure provides for UV-responsive laminates including a first layer having a photochromatic pigment arranged as a pigment texture, or one or more photochromatic indicators, or combinations thereof. The photochromatic pigment may be disposed on the laminate during laminate fabrication, prior to installation of the laminate, or in-situ, subsequent to installation. The photochromatic pigment is configured to change from a first state to a second state in response to exposure to an ultraviolet (UV) light source, the first state is invisible to a naked eye under ambient lighting and the second state is visible to the naked eye under ambient lighting. The UV-responsive laminates may further include additional layers, such as a second layer which may be a coupling layer configured to removably couple the laminate to a component. Additional layers, such as a protective layer or a backing layer, may be included in the UV-responsive laminate as well.

The present invention generally relates to fluorescent marking compositions and their use to determine whether a surface has been cleaned. More particularly, the marking compositions comprise fluorescent polymers.

Disclosed is a test soil comprising a plurality of molecules of labeled polypeptides, wherein the labeled polypeptide is a polypeptide to which a dye is added by a covalent bond, and the value of X calculated by the following formula is 100,000 or more:

[00001]$\begin{array}{l}\text{X =}\\ \left(\text{Number of dyes comprised in one molecule of labeled polyeptide}\right)\\ \times \left(\text{Molar absorption coefficient of dye}\left({\text{M}}^{\text{-1}}{\text{cm}}^{\text{-1}}\right)\right).\end{array}$

An information acquisition system of acquiring information regarding disinfection includes a detection unit configured to detect a variable information code in which a pattern before application of a disinfectant represents a first information code and a pattern after the application of the disinfectant represents a second information code different from the first information code, one or more memories, and one or more processors in communication with the detection unit and with the one or more memories, wherein the one or more processors and the one or more memories are configured to acquire information regarding the disinfection in response to detection of at least the second information code by the detection unit.

A medical instrument processor includes an enclosure, a liquid distribution system, and a disinfectant concentration measuring subsystem. The enclosure is configured to hold a medical instrument. The liquid distribution system is configured to deliver a disinfection solution to a medical instrument within the enclosure. The liquid distribution system has a liquid outlet. The disinfectant concentration measuring subsystem includes a first mixing chamber in fluid communication with the liquid outlet, a pump that is configured to simultaneously pump the disinfection solution and the reagent solution into the first mixing chamber, and a concentration analysis assembly that is operable to determine a concentration of disinfectant in a sample solution that is output from the first mixing chamber. The reservoir is in fluid communication with the first mixing chamber.

The disclosure provides compositions and methods for making a colorized solution of an aqueous disinfectant that is both stable in bulk solution and will fade to clear within a predetermined period of time after being applied to a surface, for example as a spray or film. The compositions and methods described here allow an end user to visualize both the extent of coverage and the duration of contact of the disinfectant with the surface, thereby providing more efficient disinfection of the surface.

The disclosure provides compositions and methods for making a colorized solution of an aqueous disinfectant that is both stable in bulk solution and will fade to clear within a predetermined period of time after being applied to a surface, for example as a spray or film. The compositions and methods described here allow an end user to visualize both the extent of coverage and the duration of contact of the disinfectant with the surface, thereby providing more efficient disinfection of the surface.