GB/T 18633-2018 in English

VALID

Determination of potassium in feeds—Flame photometry

Issued on:2018-05-14
Implemented on:2018-12-01
File Format:PDF
Delivery:Via email within 1~3 business days

Price(USD)： $80.00
$78.00

Standard No:	GB/T 18633-2018
Document status:	VALID
Title in English:	Determination of potassium in feeds—Flame photometry
Title in Chinese:	饲料中钾的测定火焰光度法
Language:	English
File Format:	Electronic (PDF)
Delivery:	Via email within 1~3 business days
Issued on:	2018-05-14
Implemented on:	2018-12-01
Superseding:	GB/T 18633-2002 Determination of potassium in feed--Flame photometric method
ICS Classification:	65.120-Animal feeding stuffs
Chinese Classification:	B46-Livestock and poultry feed and additive
Professional Classification:	GB-National Standard
Related Keywords:	feeds flame photometry introduction gb/t18633-2018 standard interpretation flame photometry application cases flame photometry potassium element potassium
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《GB/T 18633-2018饲料中钾的测定火焰光度法》由TC76（全国饲料工业标准化技术委员会）归口，主管部门为国家标准化管理委员会。

Introduction

GB/T18633-2018 Standard Interpretation

This standard is an important basis for the detection of potassium in the feed industry. It adopts flame photometry to ensure the accuracy and reliability of the measurement.

Analysis of Standard Formulation Background and Technological Evolution

Comparison Dimensions	Requirements of the 2002 Edition	Improvements of the 2018 Edition
Scope of Application	Compound feed, concentrated feed	Extended to concentrate supplements and additive premixes
Detection Limit	-	Defined as 2.00 mg/kg
Sampling Method	Not specified in detail	Standardized by GB/T14699.1

Explanation of professional terms and application cases

Flame photometry: The potassium element in the sample is atomized by high temperature, and its characteristic emission spectrum at a wavelength of 766.5 nm is used for quantitative analysis.

In actual applications, if the test value exceeds the range of the standard curve (such as more than 200 mg/kg), it is necessary to re-dilute and re-measure to ensure the accuracy of the result.

Implementation recommendations

The laboratory should calibrate the flame photometer regularly to ensure wavelength accuracy and sensitivity.
Operators need to receive professional training, especially pay attention to safety when handling perchloric acid and nitric acid solutions.
It is recommended to establish an internal quality control system, including regular verification with standard substances.

More samples: NB/T 47013.2-2015 GB 50021-2001(2009) JC/T 2453-2018

Sample only — not a preview of GB/T 18633-2018

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