Normas ISO

Solid wood parquet and raw parquet blocks -- Vocabulary

Coniferous wood raw parquet blocks -- General characteristics

Solid wood parquet -- Classification of fir and spruce strips

Fertilizers -- Determination of water-soluble potassium content -- Preparation of the test solution

Fertilizers -- Extraction of water-soluble phosphates

Fertilizers -- Determination of total nitrogen content -- Titrimetric method after distillation