Pressure tester Model 415

compressionfor paintfor coating

The Model 415 Drying Time Tester determines the degree of dryness of paints and coatings according to ISO 9117 using the modified Bandow-Wolff method. It consists of a light metal cylinder with an integrated compression spring (to generate a stamping load up to 250 N), a lever mechanism to apply the force perpendicularly and an adjustable stand plate to match sample thickness.

Test principle and construction
The tester is designed as a manual stamping device mounted on a stand. The compression spring inside the cylinder provides the stamping force transmitted perpendicularly via a lever. The stand plate is adjustable to accommodate different sample thicknesses. Included weights and a soft rubber disk allow application of standardized loads in accordance with the method.

Performing the analyses

• Dryness degree 1
• The coating is covered with ballotini which are subsequently removed using a fine brush.
• Dryness degrees 2 and 3
• Place a paper disk onto the coating, then a soft rubber disk. Apply loads of 20 g and 200 g by adding one of the individual weights provided (load duration 60 s).
• Dryness degrees 4 to 7
• Place the test panel on the stand base with the coating upward and successively cover with a paper disk and a soft rubber disk. The required load (2 kg or 20 kg) corresponding to a plunger force of 20 N or 200 N is produced using lever pressure and maintained for approx. 60 s.

Evaluation of test
After removing the load, evaluate the coating according to the ISO 9117 degree-of-dryness table supplied with the method.

Scope of delivery

• Drying Time Tester, Model 415
• Stand
• Individual weight for load of 20 g
• Individual weight for load of 200 g
• 2 soft rubber disks, 22 mm ∅
• 100 paper disks, 26 mm ∅
• Ballotini dispenser
• 50 g glass beads (ballotini), ∅ 125 - 250 μm, in compliance with ISO 9117

Standards

• ISO 9117

Characteristics / technical specifications

• Drive: Manual
• Dimensions: Width approx. 150 mm // Depth approx. 300 mm // Height approx. 440 mm
• Net weight: approx. 4.5 kg
• Testing force: up to 250 N
• Included weights for standard load under 2 kg (20 N): 20 g and 200 g weights (24 mm diameter)
• Soft rubber disk: diameter 22 mm, thickness (5 ± 0.5) mm, hardness (50 ± 5) IRHD (DIN ISO 48)
• Ballotini: 50 g glass beads ∅ 125 - 250 μm (ISO 9117)
• Order number: 00930131