---
title: Mould T12M Metopac™ panel sheets | Novamart AG
url: https://novamart.ch/en/product/form-t12m-metopac-panel-sheets/
language: en-GB
---

# Mould T12M Metopac™ panel sheets | Novamart AG

> Painted sheet steel for measuring the hiding power of electrostatically applied powder coatings and aerosol-sprayed industrial paints. 132 x 279 mm

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# Mould T12M Metopac™ panel sheets

[Product overview](https://novamart.ch/en/product-catalogue-3/) / [Charts, maps & sample sheets](https://novamart.ch/en/product-category/charts-maps-sample-sheets/) / [Metal panels & sample sheets](https://novamart.ch/en/product-category/charts-maps-sample-sheets/metal-panels-pattern-sheets/) / Mould T12M Metopac™ panel sheets

## Mould T12M Metopac™ panel sheets

Painted sheet steel for measuring the hiding power of electrostatically applied powder coatings and aerosol-sprayed industrial paints. 132 x 279 mm

SKU: Leneta mould T12MCategory: [Metal panels & sample sheets](https://novamart.ch/en/product-category/charts-maps-sample-sheets/metal-panels-pattern-sheets/)

- Description
- Technical
- Additional information

Painted sheet steel for measuring the hiding power of electrostatically applied powder coatings and aerosol-sprayed industrial paints.

- **Black** Surface: solvent-resistant, non-bleeding, reflectance - maximum 1%.
- **White** Surface: Solvent-resistant, colour-stable, reflectance - at least 78%.

### Specifications

- Colour: Black & White
- Surface area: 368 cm²
- Size: 5-3/16 x 11 inch / 132 x 279 mm
- Box content: 50
- Boxes per package: 4
- Weight per box: 11 lb
- Minimum order: 1 box

The most important applications are

- **ASTM Method D 6441 - Measuring the Hiding Power of Powder Coatings** - A wedge-shaped film is applied to a T12G or T12M plate. Dots with a certain film thickness are localised over the black and white areas, the reflectance is measured and the average contrast ratio at this film thickness is calculated. Alternatively, several pairs of black/white dots of the same thickness at different layer thicknesses of the wedge are determined, measured and the calculated contrast ratio is plotted graphically at the corresponding layer thickness in order to find the layer thickness at a contrast ratio of 0.98. In this method, the reflectance is measured with a small diameter aperture (e.g. 4 mm) and the coating thickness is measured with an electronic coating thickness gauge.
- **Powder Coatings Institute Method** - With this method, the film thickness is determined directly on a T12G plate with a contrast ratio of 0.98. Alternatively, the contrast ratio is determined at a specific coating thickness. Reflectance and film thickness are measured as in ASTM D 6441.
- **ASTM Method D 2805 - Hiding Power of Paints by Reflectometry** - The film is applied evenly to a plate. The film weight and the reflectance R0 are determined on the black surface, and the reflectance R∞ of the coating is determined using the black and white surfaces. The gravimetric spreading rate at a contrast ratio of 0.98 is then calculated using the Kubelka-Munk equations. The conversion to the volumetric spreading rate or to the coating thickness is easy to perform.

## Additional information

| brand | Leneta |
| --- | --- |
| Mission | Aussehensprüfung, Deckvermögen, Lackprüfung, Musterprüfung, Visuelle Prüfung |
| Industry sectors | !!! Painters Coaters Printers |
| Substrates/substances | Pulverfilm, Beschichtungen und Druckfarben, Nassfilm & Nasslacke |
| Standards | ASTM D2805, ASTM D6441 |

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