A surface wipe for the detection of harmful substances on surfaces by producing uniform color change and a color comparator to determine the concentration of harmful substance collected on the wipe by comparing the intensity and hue of the uniform color on the wipe to a calibrated color scale related to specific concentration of the target harmful substance. In operation, the wipe is held from the handle to swipe a suspect surface. The pressure applied by fingers at certain areas on the rigid or flexible top support member of the wipe during the swiping process is transferred to the flexible wipe body. The flexible body of the wipe uniformly distribute the pressure applied by fingers throughout its mass and/or take the shape of irregular and uneven surface allowing the collection and color forming assembly to produce uniform color change that can be quantified by the color comparator.

The invention relates to a method for producing a fiber based product, wherein the method comprises the steps of: a) applying a binder composition over at least one surface of at least one fiber based substrate; b) determining the distribution of the applied binder composition over the entire at least one surface of the at least one fiber based substrate; and c) based on the determination in step b) either accepting the treated at least one fiber based substrate for the production of the fiber based product or rejecting the treated at least one fiber based substrate from the production of the fiber based product. The invention further relates to a method for producing a binder composition, to a binder composition and to a fiber based product.

A wipe for detecting the presence of an explosive substance is composed of an absorbent or adsorbent substrate and a chemical detection solution impregnated within the substrate. In one embodiment the chemical detection solution includes a combination of reagents operable, when contacted with a particular explosive substance to undergo a chemical reaction or a series of chemical reactions to produce a compound having a visible color. In another embodiment, the chemical detection solution includes a redox color indicating agent that is operable to exhibit a color change upon reacting with the explosive substance.

Disclosed herein is a system for indicating via a colorimetric reaction the presence of a substance in a sample, comprising: a bottle containing a reagent and closable by a removable lid; and a label coupled to the bottle and comprising visual indicators for indicating the presence of a substance in a sample, wherein upon mixing the sample with the reagent in the bottle, the mixture changes to a particular color based on the identity of the substance in the sample, and each visual indicator is colored the color the mixture would be if a respective substance is in the sample, such that correspondence between the color of the mixture and the color of a visual indicator indicates the presence of the substance indicated by that visual indicator.

Corrosion inhibiting hydraulic fluid additives, kits, and methods are disclosed. The hydraulic fluid additive may be adapted for use with brake fluid in vehicular brake systems. The kits may include an additive, a hydraulic fluid tester, and/or correlated information on test results and hydraulic fluid service actions.

A wearable UV indicator, methods of making and using same. The indicator includes a polymeric film substrate having a first side and a second side, an adhesive disposed on the first side of the substrate, and a readily understood user interface disposed on the second side of the substrate, wherein the user interface comprises a qualitative indicator of instantaneous intensity of solar ultraviolet irradiation and a qualitative indicator of accumulated exposure to solar ultraviolet radiation.

Gas detector tubes kits are described. Gas detector tubes may be used to determine the concentration of target gases and/or interferent gases in a sampled gas either visually or electronically.

A clothing cuff clip attachable to an article of clothing, especially a pants leg cuff, to gather and lift the clothing up from an adjacent surface and provide a modest barrier between the surface and the clothing item being worn. The clothing cuff clip is inexpensive to manufacture in large quantities and may be disposable after extended use. The clip is easy to attach to the lower back edge of the pants leg cuff on the item of clothing being worn and yet remains securely attached even after extended use. Optionally, a contamination indicator that changes in appearance when subjected to significant moisture, a change in pH, or the presence of a selected contaminant material, is positioned on the lower floor contact area of the clip to provide the wearer with an indication of when the clip, and therefore the item of clothing, has come into contact with contaminated materials.

The invention provides a test strip comprising an identification region coded a screen function of the test strip by a chromaticity coordinates model; a calibration region having a particular color for calibrating an external spectrum analyzer; and a reaction region chemically reacted with a specific specimen for changing its own color. By using the external spectrum analyzer to conduct light splitting of the reflective lights from the recognition and reaction regions of the test strip, automatic recognition and simplified usage can be achieved.