BYK-Gardner offers a wide range of drawdown cards and charts for virtually any application and coating material. Stringent quality control during the production process assures that they have the most consistent color and gloss in the industry. Test charts are easy to use and an inexpensive substrate to test a variety of coating properties, such as opacity, spreading rate, penetration behavior, and flow & leveling behavior. They are used for testing architectural, industrial, automotive, wood finishes or even cosmetic products (e.g. nail polish). The test cards are suitable for solvent-based and water-based systems.
- Rugged design
- Lot numbers are printed on every chart
- Repetable color and gloss - lot after lot
- Guaranteed non-fluorescent paper in compliance with ASTM D344
Can also be delivered with your company logo if the quantity is sufficient. Ask us about graduated prices for larger quantities.
Birch veneer panel
Real wood laminated on paper. Birch has a neutral color with minimal grain pattern for color matching of stains.
byko-chart Opacity drawdown charts
Comprised of a simple combination of black and white areas with ample space for reflectance measurement. Opacity drawdown charts are used to test the hiding power of coatings. Black and white areas have the tighest tolerances in the industry, ensuring repeatable opacity measurements paint batch after paint batch. Clearcoated charts have the lot number printed on every chart.
byko-chart Penetration and Opacity Charts – Penopac
The test areas and functions of a penetration and opacity drawdown chart / drawdown card are combined with these charts. The penetration resistance is of special importance to architectural finishes. The ability to maintain a uniform appearance (color and gloss) on substrates with varying porosity can be evaluated by applying the paint over a test chart which has a coated and uncoated area. Thus, the penetration resistance is tested under severe conditions.
The penetration resistance is visually evaluated and can also be objectively evaluated by measuring color and gloss.
Display charts / Checkerboard charts – Spreading rate charts
Large size drawdown charts, referred to as display or spreading rate charts, were designed for visual evaluation of hiding power. The diagonal striped patterns or the checkerboard respectively have a strong visual impact and emphasize variations in film opacity.
Plain black and white drawdown chart
An all black chart can check opacity of a coating used over a dark primer or substrate. A visual assessment of sparkle or pearl appearance of special effect coatings and cosmetics can be easily viewed with a black background.
These drawdown charts are plain white with the coating on one side and no text or label on top (except 2835). The 2835 is an uncoated stock paper with a nominal thickness of 0.38 mm (15 mils). Chromolux drawdown cards are for determination of whiteness.
The Chromolux chart has a very smooth, high gloss surface, achieved by the paper being pressed against a hot metal plate.
Brushout drawdown cards
Made from heavy, rigid stock paper; used mostly for informal brushout applications. The paper stock is almost twice the thickness of regular drawdown chart paper to give greater rigidity for easier handling.
Uncoated drawdown cards
Use these uncoated drawdown cards to simulate wood or unsealed wallboard.
Gray scale chart
The chart is sealed with bars of varying shades from black to light gray on a white background. The large poster size chart allows for applying a coating with a paint roller or brush. The chart can be hung to a wall to evaluate the hiding power of the the applied coating.
Sag and Leveling Test Charts
This drawdown chart is designed for use with the NYPC Leveling Test Blade and the Anti-Sag Meter. The extra large black area allows measurements to be made over the black area only, in accordance with specifications that require the operator to ignore the leading and trailing edges of the drawdown.
Spray monitors
These spray monitors are self-adhering, pressure-sensitive labels with a hiding power test pattern and a sealed, solvent-resistant surface. They are used with metal panels and other substrates where a uniform surface appearance provides no visual clues as to the thickness of the applied film. It adheres firmly whether air-dried or baked. They are useful for visually checking for film opacity during the painting process.
Clear polyester film
The clear polyester film can be used as a substrate for coatings to evaluate color, gloss, and transparency. It is used to check for foam stabilization and de-flocculation of pigments, or placed over a black and white background for evaluation of hiding power. In addition, it is used as an overlay to protect a drawdown after drying without obscuring visibility.
Black glass panel
Black glass is used in widely referenced high-precision ASTM method D2805, and related hiding power test methods. The coating is applied directly to the glass surface. The accuracy of this test method depends on the unique hardness and levelness characteristics of the glass substrate.
