Designed and manufactured according to iso 2409-1992.

Suitable for GB/ t9286-98, BS 3900 E6/ASTM D3359

It is used to draw the grid with certain size evenly, and evaluate the adhesion degree of the coating film to the substrate by evaluating the integrity of the coating film inside the grid.It is mainly used for the determination of adhesion of organic coatings by grid method.

The instrument is mainly used for the determination of adhesion of organic coatings by grid method.Not only suitable for laboratory, but also for construction site under various conditions.

Working principle and application scope: the instrument cuts and penetrates the pattern of the coating grid with a certain specification of tools. The pattern completed by the pattern grid is classified into six levels to assess the resistance of the coating to separation from the substrate.

Technical indicators:

The spacing of multi-edge cutting knives is: 1+0.01mm, 2+0.01mm, 3+0.01mm, respectively.Many cutting knife blade tip straightness is respectively: ≯ ≯ 0.006 mm to 0.003 mm.Much work blade cutter tooth width: ≯ 0.05 mm.Tooth spacing: 1mm/2mm/3mm paint film thickness: 60um/120um/120um

The scale results in adhesion according to the following standard grades

ISO rating: 0

ASTM grade: 5B

The cut edges are completely smooth and there is no peeling at the edges of the lattice

ISO rating: 1

ASTM grade: 4B

Small flakes were exfoliated at the intersection of incisions, and the actual damage in the grid area was not more than 5%

ISO rating: 2

ASTM grade: 3B

Flaking of the edges and/or intersections of the incisions over an area greater than 5% but less than 15%

ISO rating: 3

ASTM grade: 2B

There is partial or complete flaking along the edge of the incision, and/or partial flaking of the lattice.More than 15 percent of the area has been exfoliated, but less than 35 percent

ISO rating: 4

ASTM grade: 1B

Large flaking of cut edges/or partial or complete flaking of some squares over 35% but not more than 65% of the zoned area

ISO rating: 5

ASTM grade: 0B exceeds the previous grade