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PR NF X10-352 ; PR NF EN 18097
Hydrometry - Measurement of precipitation intensity - Metrological requirements and test methods for non-catching type rain gauges
PR NF X15-055-2 ; PR NF EN 16589-2
Laboratory local exhaust devices - Articulated extraction arms - Part 2: Commissioning and on-site testing
PR NF X15-211 ; PR NF EN 17242
Laboratory equipment . Recirculatory filtration fume cupboard . General, classification, requirements.
PR NF X15-220-1 ; PR NF EN 15154-1
Laboratory emergency safety showers - Part 1 : plumbed-in body showers.
PR NF X15-220-2 ; PR NF EN 15154-2
Laboratory emergency safety showers - Part 2 : plumbed-in eye washes.
PR NF X20-001-1 ; PR NF EN ISO 10101-1
Natural gas - Determination of water by the Karl Fischer method - Part 1: Introduction
PR NF X20-001-2 ; PR NF EN ISO 10101-2
Natural gas - Determination of water by the Karl Fischer method - Part 2: Volumetric procedure
PR NF X20-001-3 ; PR NF EN ISO 10101-3
Natural gas - Determination of water by the Karl Fischer method - Part 3: Coulometric procedure
PR NF X20-507-1 ; PR NF EN ISO 17507-1
Natural gas - Calculation of methane number of gaseous fuels for reciprocating internal combustion engines - Part 1: MNc method
PR NF X20-507-2 ; PR NF EN ISO 17507-2
Natural gas - Calculation of methane number of gaseous fuels for reciprocating internal combustion engines - Part 2: PKI method
