Standard Test Method for Total Nitrogen in Peat Materials Ingestion-build-221493 this gives a reasonable level

this gives a reasonable level of confidence that the meter type tested is free from serious design errors and material flaws that may prevent it from maintaining its specified accuracy for the period of use estimated by the manufacturer

b) definition of general mapping rules and specific mapping rules commonly applying to various mapping types

and navigable waterways

adjustment and maintenance is accepted as part of the normal use of the equipment

particularly those responsible for defining systems and software quality requirements and for systems and software product evaluation

Standard Test Method for Total Nitrogen in Peat Materials Ingestion-build-221493 this gives a reasonable level