Overview
TQC VF2122 wide-channel Fineness Gauge is a stainless steel single-channe Grindometer with a large groove width produced by TQC in the Netherlands. It is made of Swiss 1.2805 tool steel and has the characteristics of High Accuracy （ +/- 2 microns), Abrasion Resistance and good corrosion resistance. The Fineness Gauge has a smooth surface, is easy to maintain, and can be operated by hand. It is suitable for rapid determination of the fineness of pigments and other materials.
Features
1. Wide groove design, larger than the average single-channe Grindometer groove
2. Made of Swiss 1.2805 tool steel, Abrasion Resistance and corrosion resistance are better than ordinary stainless steel
3. High Accuracy up to +/- 2 microns
4. Graded slope design with two different parameters: micron and Hegman
5. The surface is fine and smooth, easy to maintain
6. Handheld operation, easy to use
Principle
Fineness detection is done by grinding pigments into finer particles and dispersing them in fluid equipment. The physical properties of the final dispersion are called "fineness". Using a wide-channel Grindometer, pour the sample into the deep end of the groove, use a drawdown blade to scrape towards the shallow end at an appropriate angle and a steady speed, and observe the scale value corresponding to the position of the rough particles on the surface of the Fineness Gauge after scraping to quickly determine the fineness.
Applications
Paints, Coatings, pigments, raw materials, plastics, Printing inks, chocolate, ceramics, paper, food
Standards
ASTM D1210、ASTM D1316、DIN 53203、DIN EN ISO NF21524、FTMS 141 a M.4411.1 ISO1524、NFT 30 046
Steps
1. Wash the wide-channel Grindometer and drawdown blade with the specified solvent and dry with cotton yarn
2. Mix the sample that meets the standard viscosity well with a blender
3. Drop a few drops of the sample into the deepest part of the Grindometer groove to fill the groove with a little excess
4. The double hand-held drawdown blade is transversely placed on the upper end of the fineness meter, so that the drawdown blade is perpendicular to the surface, and is pulled from deep to shallow at a suitable speed
5. Immediately (no more than 5 seconds) pinch the fineness meter and tilt it, and the line of sight is at a 15-30 degree angle to the plane of the groove. Observe the scale value of the particles uniformly exposed to the light
Notice
• Clean the gauge and drawdown blade with the specified solvent and dry them before use
• The sample needs to be fully mixed and meet the product standard viscosity
• The amount of sample dripping should be slightly excess to fill the groove
• When scraping, the drawdown blade should be perpendicular to the surface of the fineness meter
• The reading needs to be completed within 5 seconds after scraping
• When reading, the line of sight should be at an angle of 15-30 degrees to the groove plane
