{"id":304969,"date":"2024-10-19T20:51:50","date_gmt":"2024-10-19T20:51:50","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iso-109272011\/"},"modified":"2024-10-25T18:26:10","modified_gmt":"2024-10-25T18:26:10","slug":"bs-en-iso-109272011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iso-109272011\/","title":{"rendered":"BS EN ISO 10927:2011"},"content":{"rendered":"
PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
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9<\/td>\n | 1 Scope 2 Normative references 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
10<\/td>\n | 4 Principle <\/td>\n<\/tr>\n | ||||||
11<\/td>\n | 5 Reagents 5.1 Matrices 5.2 Solvents 5.3 Salts 5.4 Molecular mass standards 6 Apparatus 6.1 General 6.2 Sample introduction chamber\/target <\/td>\n<\/tr>\n | ||||||
12<\/td>\n | 6.3 Laser source 6.4 Flight tube <\/td>\n<\/tr>\n | ||||||
13<\/td>\n | 6.5 Detector 6.6 Data recording 6.7 Data handling 7 Procedure 7.1 General 7.2 Sample preparation 7.2.1 General 7.2.2 Preparation of polymer\/matrix\/salt solutions <\/td>\n<\/tr>\n | ||||||
14<\/td>\n | 7.2.3 Deposition of the sample on the sample plate (target) 7.2.3.1 General 7.2.3.2 Hand-spotting (air-dried droplet technique) 7.2.3.3 Spray technique 7.2.3.4 Grinding (solvent-less preparation) 7.2.4 Preparation and spotting of biopolymer\/matrix solutions 7.3 Instrument settings <\/td>\n<\/tr>\n | ||||||
15<\/td>\n | 7.4 Recording spectra <\/td>\n<\/tr>\n | ||||||
16<\/td>\n | 8 Data acquisition and processing 8.1 General 8.2 Calibration 8.2.1 General 8.2.2 Calibration of mass axis using synthetic-polymer standards 8.2.2.1 Selection of standards 8.2.2.2 Sample preparation 8.2.3 Calibration of mass axis using biopolymer standards 8.2.4 Self-calibration method <\/td>\n<\/tr>\n | ||||||
17<\/td>\n | 8.3 Generation of calibration curve 8.4 Signal intensity axis calibration 9 Expression of results 9.1 Calculation of molecular mass distribution 9.2 Calculation of the average molecular masses 10 Precision <\/td>\n<\/tr>\n | ||||||
18<\/td>\n | 11 Test report <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Plastics. Determination of the molecular mass and molecular mass distribution of polymer species by matrix-assisted laser desorption\/ionization time-of-flight mass spectrometry (MALDI-TOF-MS)<\/b><\/p>\n |