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JJF 1729-2018 English PDF

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US$419.00 · In stock
Delivery: <= 4 days. True-PDF full-copy in English will be manually translated and delivered via email.
JJF 1729-2018: Calibration Specification for Pesticide Residue Detectors
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJF 1729-2018	419	Add to Cart	4 days	Calibration Specification for Pesticide Residue Detectors	Valid

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Basic data

Standard ID: JJF 1729-2018 (JJF1729-2018)
Description (Translated English): Calibration Specification for Pesticide Residue Detectors
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A61
Word Count Estimation: 18,192
Date of Issue: 2018-12-25
Date of Implementation: 2019-03-25
Regulation (derived from): State Administration of Markets, Announcement No. 34 of 2018
Issuing agency(ies): State Administration for Market Regulation

JJF 1729-2018: Calibration Specification for Pesticide Residue Detectors

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Pesticide Residue Detector Calibration Specification) National Metrology Technical Specification Pesticide Residue Detector Calibration Specification Published on.2018-12-25 2019-03-25 implementation State Market Supervisory Administration released Pesticide Residue Detector Calibration Specification Focal Point. National Physical and Chemical Metrology Technical Committee Main drafting unit. Guangdong Institute of Metrology Participated in drafting unit. Changchun Jida·Little Swan Instrument Co., Ltd. Shenzhen Yirui Biotechnology Co., Ltd. China Guangzhou Analytical Testing Center This specification entrusts the National Physical and Chemical Measurement Technical Committee to explain The main drafters of this specification. Xu Junbin (Guangdong Institute of Metrology) Zhu Junqing (Guangdong Institute of Metrology) Jia Rui (Guangdong Institute of Metrology) Participate in the drafters. Gao Dejiang (Changchun Jida·Little Swan Instrument Co., Ltd.) Wang Bingzhi (Shenzhen Yirui Biotechnology Co., Ltd.) Zeng Chengzhu (Guangzhou Analytical Testing Center)

Introduction (II) 1 Scope (1) 2 Overview (1) 3 Measurement characteristics (1) 4 Calibration conditions (1) 4.1 Environmental conditions (1) 4.2 Measurement Standards and Reference Materials (2) 5 Calibration items and calibration methods (2) 5.1 wavelength (2) 5.2 Transmittance indication and repeatability (2) 5.3 Stability (2) 5.4 Differences between channels (2) 5.5 Sensitivity (3) 6 Calibration result expression (3) 7 re-study interval (3) Appendix A Preparation of Potassium Dichromate Solution (4) Appendix B Example of Evaluation of Transmittance Indication Error Uncertainty (5) Appendix C Example of Evaluation of Wavelength Error Uncertainty (7) Appendix D Example of Evaluation of Sensitivity Calibration Uncertainty (9) Appendix E Calibration Certificate Page Format (Recommended) (11) Appendix F Calibration Record Format (Recommended) (12)

Introduction

This specification refers to GB/T 5009.199-2003 "Residues of Organophosphorus and Carbamate Pesticide Residues in Vegetables" Rapid Detection》, JJG178-2007 "UV, Visible, Near Infrared Spectrophotometer" and JB/T 12967-2016 Formulated as "Rapid Detector for Organophosphorus and Carbamate Pesticide Residues". This specification is the first release. Pesticide Residue Detector Calibration Specification

1 Scope

This specification applies to the cholinesterase kit colorimetric principle pesticide residue detector (hereinafter referred to as "detector") Calibration.

2 Overview

Under certain conditions, organophosphorus and carbamate pesticides have an inhibitory effect on the catalytic hydrolysis of cholinesterase. The inhibition rate is positively correlated with the concentration of pesticides. Under normal conditions, the enzyme catalyzes the hydrolysis of the transported metabolites, which hydrolyzes The substance reacts with the developer to produce a yellow substance that absorbs at a specific wavelength. According to the principle, the detector is used in fruits and vegetables. Determination of organophosphorus and carbamate pesticide residues. The detector is mainly composed of a light source, a sample chamber, a detector, and a display. Unit and so on.

3 Measurement characteristics

3.1 Wavelength Maximum allowable error. ±10.0nm. 3.2 Transmittance indication and repeatability Maximum allowable error. ±2.0%; Repeatability. ≤0.5%. 3.3 Stability The absorbance change within 10 min does not exceed ±0.01. 3.4 Differences between channels The absorbance difference is ≤0.05. 3.5 Sensitivity Sensitivity is expressed in terms of inhibition rate. Detection of 0.8 mg/L methamidophos and 0.1 mg/L methomyl samples, The rate should be ≥50%. Note. The above indicators are not used for qualification determination and are for reference only.

4 Calibration conditions

4.1 Environmental conditions 4.1.1 Ambient temperature. (15~35) °C. 4.1.2 Relative humidity. ≤ 85%. 4.1.3 Power supply. The voltage is (220±22)V; the frequency is (50±0.5)Hz. 4.1.4 The instrument should not be exposed to direct sunlight, no strong magnetic fields or electric fields, no strong air currents and corrosive gases. ......

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Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of JJF 1729-2018_English be delivered?

Answer: Upon your order, we will start to translate JJF 1729-2018_English as soon as possible, and keep you informed of the progress. The lead time is typically 2 ~ 4 working days. The lengthier the document the longer the lead time.

Question 2: Can I share the purchased PDF of JJF 1729-2018_English with my colleagues?

Answer: Yes. The purchased PDF of JJF 1729-2018_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?

Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?

Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay.