STN P CEN/TS 17765
| Name: | STN P CEN/TS 17765 |
| Validity: | Valid |
| Number of pages: | 12 |
| Language: |
EN
|
| Paper: | 9,70€ |
| Electronic version |
a) Only read (without ability to print and copy)
8,73€ b) Without ability to print, with ability to copy (printscreen) 9,70€ c) With ability to print and copy (printscreen) 12,61€ |
| Slovak title | Organické a organicko-minerálne hnojivá. Stanovenie obsahu biuretu vysokoúčinnou kvapalinovou chromatografiou (HPLC) |
| English title | Organic and organo-mineral fertilizers - Determination of the biuret content by high-performance liquid chromatography (HPLC) |
| Release Date: | 01. 08. 2022 |
| Date of withdrawal: | |
| ICS: | 65.080 |
| Sorting character/National clasification code | 65 5030 |
| Level of incorporation: | idt CEN/TS 17765:2022 |
| Official Journal | 07/22 |
| Amendments | |
| Replaced by: | |
| Repleces: | |
| Note in Official Journal: | Táto predbežná slovenská technická norma je určená na overenie. Prípadné pripomienky pošlite do apríla 2024 Úradu pre normalizáciu, metrológiu a skúšobníctvo SR. |
| Subject of the standard: | This document is applicable to fertilizing products, which are classified as PFC 1(A) and PFC 1(B) or the PFC 1(A) and PFC 1(B) component in PFC 7 of Regulation (EU) 2019/1009 [4]. However, the present method was not validated for blends. This document specifies a method for the determination of the biuret content by high-performance liquid chromatography (HPLC) with UV detector. The method is applicable to organic and organo-mineral fertilizers containing urea. Nowadays, there is a method standardized as EN 15479 that allows the determination of biuret in urea by spectrophotometric detection. Organic and organo-mineral fertilizers contain organic matter and other compounds apart from urea that would interfere in a spectrophotometric method. HPLC allows an accurate determination of biuret by separating it from possible interfering compounds [2] [3]. |
| Preview: | Náhľad normy (PDF) |