Potřebujeme váš souhlas k využití jednotlivých dat, aby se vám mimo jiné mohly ukazovat informace týkající se vašich zájmů. Souhlas udělíte kliknutím na tlačítko „OK“.
Standard Practice for Analysis of Vegetable Tanning Materials—General
Přeložit název
NORMA vydána dne 1.12.2020
Označení normy: ASTM D4899-99(2020)
Datum vydání normy: 1.12.2020
Kód zboží: NS-1013109
Počet stran: 2
Přibližná hmotnost: 6 g (0.01 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM
Keywords:
tannin, tannin analysis, vegetable tannin analysis, vegetable tannins,, ICS Number Code 59.140.10 (Processes and auxiliary materials)
Significance and Use | ||||||||||||||||||||||||||||||||
3.1?Vegetable tanning materials are natural products containing various substances of varying composition, concentration and quality. 3.2?The methods referenced are useful for analyzing and testing vegetable tanning materials for moisture, water-extractable substances, cold-soluble fractions, tannins, non-tannins, acidity, tanning properties, the color of tanned leather, and the presence or absence of certain admixtures. |
||||||||||||||||||||||||||||||||
1. Scope | ||||||||||||||||||||||||||||||||
1.1?This practice is intended for use in the chemical analysis of all vegetable tanning materials. 1.2?The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3?This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
||||||||||||||||||||||||||||||||
2. Referenced Documents | ||||||||||||||||||||||||||||||||
|
Poslední aktualizace: 05.05.2024 (Počet položek: 2 897 047)
© Copyright 2024 NORMSERVIS s.r.o.