ASTM D 3376:2025

1.1 These test methods cover the sampling and testing of cellulosic pulps for use in the manufacture of electrical insulating papers and boards or in the direct application of pulp fibers as insulation to electrical conductors. Note 1: Consider the significance of any one pulp property test method, as set forth herein, with discretion depending on the product made from the pulp. 1.2 Sections on Reagents, Sampling, and Report are integral parts of each of the individual test methods that follow. 1.3 Each test method is described as being a measure of either a bulk property of the pulp or a property of a handsheet formed from the pulp. 1.3.1 Bulk characteristics determinable by these procedures appear in the following sections: Procedure Sections ASTM Method Reference TAPPI Method Reference Aqueous Extract Conductivity 8 & 9 D202 . . . Aqueous Extract pH 10 & 11 D202 . . . Aqueous Extractable Acidity- Alkalinity 12 & 13 D202 . . . Analysis of Ash for Cations by Atomic Absorption Spectrophotometry 70 - 78 D1193 & D2576 . . . Ash Content 79 - 82 D202 T 413 Dirt in Pulp 40 & 41 . . . T 213 Fiber Analysis 23 & 24 D202 & D1030 . . . Fiber Length of Pulp 42 & 43 . . . T 232, T 233 Freeness (Canadian Standard Freeness) 53 & 54 . . . T 227 Kappa Number/Permanganate Number (Substances Oxidizable by Permanganate) 27 & 28 . . . T 236, UM 251 Laboratory Processing of Pulp (Beater Method) 51 & 52 . . . T 200 Moisture in Pulp 31 - 33 . . . T 210 Neutral Aqueous Extractable Hard- ness in Pulp 16 - 22 D202 , D1126 , & D2576 . . . Pentosan Content of Pulp 29 & 30 . . . T 223 Resistance of Pulp to Disintegration (Standard RPG) 44 - 50 . . . T 239, UM 252 Shive Count 34 - 39 . . . . . . Solvent-Soluble Matter in Pulp 25 & 26 D202 . . . Tensile Properties 65 - 69 D202 . . . Water-Extractable Chlorides 14 & 15 D202 . . . 1.3.2 Handsheet characteristics determinable by these procedures appear in the following sections: Procedure Sections ASTM Method Reference ...

85.040