This part of GB/T 9284 specifies the method for determining the softening point of resins (including rosin) and similar materials by the ring and ball method. This section specifies both manual and automatic methods.
GB/T 9284.1-2015 Referenced Document
ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
GB/T 3186 Paints, varnishes and raw materials for paints and varnishes. Sampling
GB/T 6379.1 Accuracy(trueness and precision)of measurement methods and results Part 1:General principles and definitions
IEC 60751 Industrial platinum resistance thermometers and platinum temperature sensors*, 2022-01-27 Update
GB/T 9284.1-2015 history
2015GB/T 9284.1-2015 Binders for paints and varnishes.Determination of softening point.Part 1:Ring-and-ball method
1988GB/T 9284-1988 Binders for paints and varnishes--Determination of softening point--Ring-and-ball method