Leneta Form18A/Form18B coated cardboard is imported coated cardboard, this product is black and white varnish coated test cardboard. Form18A/Form18B hiding power test card shape from top to bottom: 1/4 is white varnish, 1/4 is white no varnish, 1/4 is black varnish, 1/4 is white Varnish. The hiding power test card is often used in the coating, ink, paint and other industries to measure the hiding power performance of the special test card.

| model | color | Specification | Quantity per box | Boxes per carton | weight per box |
| Form18A | 1/4 is white varnish, 1/4 is white no varnish, 1/4 is black varnish, 1/4 is white varnish | 5-1/2 x 10 in 140x254mm | 250 | 6 | 6 pounds |
| Form18B | 7-5/8 x 11-3/8in 194x289mm | 250 | 4 | 9 pounds |







1. Apply paint and other coatings evenly on the paint hiding power test paper according to the film coating steps.
2. After the coating film is fully dried by air, use an instrument for objective evaluation.
3. The hiding power value can be measured within 1 second and displayed automatically.
The paint hiding power test paper is not limited to the measurement of the hiding power of paints and other coatings, and the corresponding hiding power test method can also be applied to the hiding rate detection of transparent films and plastic products.
The basic considerations in the sales of architectural coatings are hiding power and output. The measurement of coating hiding power is how many coats need to be applied for a complete coating film? how many buckets of paint are needed
Hiding power is a measure of hiding power.
Hiding power, also known as hiding rate (%) = Y black/Y white*100 (%)
A coverage rate of 100% is complete coverage, that is, there is no difference between the black and white areas after coating.
