🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
BS EN 17864:2023

BS EN 17864:2023

$102.76

Inorganic fertilizers. Determination of nitrogen content in IBDU (isobutylidenediurea) and CDU (crotonylidenediurea)

Published By Publication Date Number of Pages
BSI 2023 16
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Category:

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

This document specifies a method for the determination of nitrogen content in IBDU (isobutylidenediurea) and CDU (crotonylidenediurea) using high-performance liquid chromatography (HPLC). The method is applicable to all fertilizers which do not contain interfering organic compounds.

PDF Catalog

PDF Pages PDF Title
2 undefined
5 European foreword
6 1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus and equipment
7 7 Sampling and sample preparation
8 Procedure
8.1 General
8.2 Calibration
8.2.1 Stock solution IBDU, mass concentration ρ(IBDU) = 100 mg/l
8.2.2 Stock solution CDU, ρ(CDU) = 100 mg/l
8.2.3 Calibration solutions
8 Table 1 — Preparation of calibration solutions
8.3 Preparation of the test solution
8.4 Measurement
9 Calculation and expression of the result
9 10 Precision
10.1 Inter-laboratory tests
10.2 Repeatability
10.3 Reproducibility
Table 2 — Mean values, repeatability and reproducibility limits
11 Test report
10 Annex A (informative) Results of the inter-laboratory tests
Table A.1 — Statistical results of the inter-laboratory tests
11 Annex B (informative) Example chromatogram and calibration curves
B.1 Example chromatogram
Figure B.1 — Example chromatogram
B.2 Example calibration curves
12 Figure B.2 — Example calibration curve CDU
Figure B.3 — Example calibration curve IBDU
13 Annex C (informative) Example conditions for a suitable HPLC system
14 Bibliography

Related products

BS EN 17864:2023
$102.76