This part of GB/T 22638 specifies the method for measuring the thickness of aluminum foil. The gravimetric method specified in this section is applicable to the arbitration determination of the thickness of non-composite foils with a thickness of less than 0.10 mm. The vertical optical meter method specified in this section is applicable to the arbitration determination of the thickness of composite foils with a thickness of less than 0.10 mm. The digital display micrometer method specified in this part is applicable to the arbitration determination of the thickness of aluminum foil with a thickness not less than 0.10 mm.
GB/T 22638.1-2016 Referenced Document
GB/T 8005.1-2008 Aluminium and aluminium alloys. Terms and definitions. Part 1: Product and method of processing and treatment
GB/T 8170 Rules of rounding off for numerical values & expression and judgement of limiting values
GB/T 22638.1-2016 history
2016GB/T 22638.1-2016 Test methods for aluminium and aluminium alloy foils—Part 1: Determination of thickness
2008GB/T 22638.1-2008 Test methods for aluminium and aluminium alloy foils.Part1:Determination of thickness by gravimetric method