Appearance NBR 15795 Clause 4.2 Length measurement NBR 15795 Clause 5.1 Mine diameter measurement NBR 15795 Clause 5.2 Verification of coating adherence NBR 15795 Clause 5.3 Verification of mine eccentricity NBR 15795 Clause 5.4 Resistance to tip breakage NBR 15795 Clause 5.5 Verification of mine adherence NBR 15795 Clause 5.6 Verification of adherence between the parties NBR 15795 Clause 5.7 Watercolor pencil test NBR 15795 Clause 5.8 Tip obtaining NBR 15795 Clause 5.9 Packaging verification NBR 15795 Clause 6