Demarcation template for hazardous contaminant testing
Aspects of the disclosure relate to demarcation templates for demarcating a test area on a test surface and for providing visual guidance to a user to precisely and accurately swab the test surface in order to determine the presence and/or concentration of an analyte of interest on the test surface. In one aspect, the analyte of interest is a hazardous contaminant. Some templates can include alignment markings around the border demarcating the test area to provide such guidance to users, and can include graphical use instructions on a removable central portion of the template. The template can be adhesive to be securely fixed to the test surface for accurate demarcation of the test area throughout sampling.
1. A template for guiding collection of a hazardous contaminant sample from a test area of a test surface, the template comprising:
a substrate comprising:
a border portion having an outer perimeter; and
a removable portion surrounded by the border portion, the removable portion at least partially separated from the border portion by preformed cuts or perforations;
wherein an adhesive is provided on a surface of the substrate or wherein the substrate comprises a material configured to secure at least the border portion to the test surface via static-cling, and
wherein, when the removable portion is removed from the border portion, an inner perimeter of the border portion defines an open area configured to demarcate the test area on the test surface for the collection of the hazardous contaminant sample.
2. The template of claim 1 , wherein the inner perimeter are configured to bound a fluid poured onto the test area.
3. The template of claim 1 , wherein an adhesive is provided on a surface of the substrate, and wherein the template further comprises a protective backing layer removably provided to cover the adhesive prior to use.
4. The template of claim 3 , wherein the cuts or perforations extend through the protective backing layer.
5. The template of claim 1 , further comprising a plurality of alignment markings on the substrate provided at a spacing selected to provide visual guidance to a user for wiping entire test area.
6. A template for guiding collection of a hazardous contaminant sample from a surface, the template comprising:
a substrate comprising:
a border having an outer perimeter and an inner perimeter with edges of the inner perimeter defining an open area configured to demarcate a test area on the surface for the collection of the hazardous contaminant sample,
wherein the border comprises a material configured to secure the border to the surface via static-cling.
7. The template of claim 6 , further comprising a protective backing layer removably provided to cover the material prior to use.
8. The template of claim 7 , further comprising a removable substrate portion attached to the protective backing layer and at least partially disposed within the open area.
9. The template of claim 6 , further comprising a plurality of alignment markings provided at a spacing selected to provide visual guidance to a user for wiping the entire test area.
10. A method for applying a template for guiding collection of a hazardous contaminant sample from a test area of a test surface, comprising:
obtaining a template, the template comprising:
a border portion having an outer perimeter;
a removable portion surrounded by the border portion, the removable portion at least partially separated from the border portion by cuts or perforations; and
a protective backing layer removably secured to a surface of the border portion;
peeling at least a portion of the protective backing layer away from the surface of the border portion; and
securing the border portion to the test surface using static-cling between the surface of the border portion and the test surface or using an adhesive disposed on the surface of the border portion, wherein the cuts or perforations are preformed prior to securing the border portion to the test surface.
11. The method of claim 10 , wherein the protective backing layer is peeled away from the surface of the border portion progressively and wherein the border portion is secured using corresponding portions of the surface of the border portion that are progressively exposed.
12. The method of claim 11 , further comprising folding the protective backing layer away from a first corner of the border portion and under a portion of the border portion that is unsecured to the surface prior to securing the border portion to the test surface, wherein the protective backing layer is peeled away at the first corner progressively and corresponding portions of the border portion are progressively secured to the test surface.
13. The method of claim 12 , further comprising, upon fully removing the protective backing layer from the border portion, securing a second corner of the border portion to the test surface, the second corner diagonally opposing the first corner.
14. The method of claim 10 , wherein the cuts or perforations extend through the protective backing layer.
15. The method of claim 10 , further comprising removing the removable portion prior to peeling the border portion away from the protective backing layer, wherein removing the removable portion creates an open area within the inner perimeter.
16. The method of claim 15 , wherein the removable portion comprises at least one graphical instruction for guiding a user through the collection of the hazardous contaminant sample, the method further comprising securing the removable portion to a surface of a structure adjacent to or near the test surface.
17. The method of claim 10 , wherein the border portion further comprises a plurality of alignment markings provided at a spacing selected to provide visual guidance to a user for wiping the entire test area.
18. The method of claim 10 , wherein the template is permanently or semi-permanently secured to the test surface.