1.1 This test method describes the procedure for determining the fineness of grind of printing inks using a NPIRI Grindometer. It evaluates the size of the largest particles in a finished dispersion but not average particle size or concentration of sizes.
1.2 This test method covers both manual and automatic drawdowns using an A1 scraper.
1.3 This test method is applicable to any dispersion that is fine enough to fall within the 0 to 25 µm range of the specified grind gauge. With a minor variation in procedure, it is applicable to both paste (nonvolatile) and liquid (volatile) inks. NOTE 1—The 0 to 25 µm gauge specified in this test method is similar in principle to the 0 to 100 µm Hegman gauge described in Test Method D1210 and the various gauges described in ISO 1524:2000. Sieve analysis for concentration of particles above 45 µm is covered in Test Method D2067.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
ASTM D1316-20 Referenced Document
ASTM D1210 Standard Test Method for Fineness of Dispersion of Pigment-Vehicle Systems by Hegman-Type Gage
ASTM D2067 Standard Test Method for Coarse Particles in Printing Ink Dispersions
ASTM D6846 Standard Practice for Preparing Prints of Paste Printing Inks with a Printing Gage
ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ASTM D1316-20 history
2020ASTM D1316-20 Standard Test Method for Fineness of Grind of Printing Inks By the NPIRI Grindometer
2006ASTM D1316-06(2011) Standard Test Method for Fineness of Grind of Printing Inks By the NPIRI Grindometer
2006ASTM D1316-06 Standard Test Method for Fineness of Grind of Printing Inks By the NPIRI Grindometer
1993ASTM D1316-93(2001) Standard Test Method for Fineness of Grind of Printing Inks By the NPIRI Grindometer
1993ASTM D1316-93(1996) Standard Test Method for Fineness of Grind of Printing Inks By the NPIRI Grindometer