Core Insights - The article highlights various job opportunities in the instrumentation and laboratory equipment sector during the National Day holiday, encouraging job seekers to update their resumes and explore new positions [2]. Job Opportunities - **Agilent**: Looking for an Instrument Sales position in Hangzhou, requiring a bachelor's degree in relevant fields and over three years of sales experience in laboratory products [2]. - **Tianmei**: Hiring a Firmware Engineer in Shanghai with a salary range of 12k-15k, requiring a bachelor's degree and three years of relevant experience in electronic or automation fields [3]. - **Anton Paar**: Seeking an After-Sales Engineer in Beijing, with a focus on candidates with a background in food, materials, or chemistry [4]. - **Labtech**: Looking for an Industry Sales Manager in Beijing, offering a salary of 9k-15k, requiring experience in nuclear industry sales [6]. - **Hitachi**: Hiring an Electron Microscope Market Engineer in Guangzhou, with a salary range of 10k-30k, requiring a master's or doctoral degree and two years of relevant experience [9]. - **Yena**: Seeking a Sales Engineer in Shenzhen, requiring over three years of experience in chemical analysis instruments and proficiency in B2B sales processes [11]. - **Meipuda**: Hiring an After-Sales Engineer in Shanghai, requiring a degree in physics or chemistry and at least one year of relevant experience [12]. - **Pano**: Looking for a Sales Engineer in Guangzhou, offering a salary of 10k-15k, requiring a background in analytical chemistry or related fields [13]. - **Dachang Huajia**: Seeking a Regional Sales Manager in Beijing, requiring over three years of sales experience in materials science or chemical analysis [17].

Core Viewpoint - The article discusses the importance of customer care in the scientific instrument industry, highlighting a large-scale public service activity called "Customer Care Season" aimed at enhancing user experience and addressing equipment operation challenges through proactive service initiatives [2]. Group 1: Customer Care Initiatives - The "Customer Care Season" is a collaborative initiative by Instrument Information Network and several brand partners, now in its fifth edition, providing free on-site inspections, remote guidance, and live after-sales support [2]. - The initiative aims to improve user experience and resolve operational difficulties in scientific and industrial equipment, reflecting the industry's commitment to customer value and service quality [2]. Group 2: Industry Participation - The event has garnered participation from well-known brands such as Thermo Fisher, Shimadzu, Danaher Group, Jena, and HORIBA, showcasing its strong industry influence [2]. - The service network covers multiple regions across the country, reaching universities, research institutes, and enterprises, emphasizing the importance of "proactive after-sales and dedicated service" [2].

Core Viewpoint - The article establishes an analytical method using high-performance liquid chromatography (HPLC) to determine six phenolic substances in Conghua olives, optimizing various conditions for effective separation and detection [2][4][40]. Methodology - The method involves weighing 0.5g of dried Conghua olive powder, dissolving it in isopropyl alcohol, and subjecting it to ultrasonic extraction for 30 minutes, followed by solid-phase extraction and filtration before HPLC analysis [4][6]. - The Eclipse XDB-C18 chromatographic column was selected for separation, and a diode array detector was used to optimize the testing conditions [4][12]. Results - The study found that the peak areas of gallic acid, hydroxytyrosol, oleuropein, and elenolic acid showed good linear relationships within specified concentration ranges, with R² values greater than 0.995 [4][5]. - Detection limits for the six substances were established, with gallic acid at 2.09 mg/kg and hydroxytyrosol at 2.20 mg/kg, among others [5][33]. Recovery and Precision - The recovery rates for the substances ranged from 84% to 116%, with relative standard deviations between 0.014% and 0.15%, indicating the method's reliability [5][34]. Conclusion - The optimized method provides a reliable approach for determining the content of six phenolic substances in Conghua olives, contributing valuable insights for researchers in the field [40].

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Core Viewpoint - The article promotes a training program focused on practical skills for method validation in chemical analysis, addressing common challenges faced by professionals in the field [1][2]. Group 1: Training Program Features - The program is designed to be practical, allowing participants to apply learned skills immediately through real case studies covering chromatography, spectroscopy, and conventional physical chemistry methods [2]. - It provides detailed calculation formulas and Excel templates for immediate use, along with solutions tailored to specific matrices such as food and environmental samples [2]. - The course covers eight core parameters for validation, including detection limit, quantification limit, linear range, recovery, precision, selectivity, sensitivity, and uncertainty [3]. Group 2: Instruction and Expertise - The training is conducted by experienced laboratory managers who share insights from years of auditing and frontline experience, explaining the rationale behind standards [2][3]. - Participants will learn practical techniques for various validation parameters, ensuring comprehensive coverage of the validation process [3]. Group 3: Enrollment Benefits - The first 50 registrants will receive a discounted price, and those who pass the assessment will be awarded a training certificate to enhance their professional competitiveness [3]. - The course is designed for laboratory testing personnel, quality control and assurance staff, and students in analytical chemistry, aiming to systematically improve method validation capabilities [10].

Core Viewpoint - The article highlights high-paying job opportunities in the instrumentation sector for fresh graduates during the National Day holiday, encouraging job seekers to update their resumes and explore these positions [2]. Group 1: Job Opportunities - Agilent is offering a Customer Service Engineer position in Shanghai with a negotiable salary [2]. - Bosaide is hiring a Sales Engineer in Beijing with a salary range of 6,000 to 30,000 RMB, plus a 13th-month salary [4]. - Juneng Technology is looking for candidates in Hangzhou with a negotiable salary [6][7]. - Mettler Toledo is seeking a Software Testing Intern in Shanghai with a negotiable salary [9]. - Broadcom Measurement is hiring a Measurement Engineer in Zhengzhou with a negotiable salary [10]. - Noah is looking for a Physical and Chemical Laboratory Specialist in Shanghai with a negotiable salary [11]. - Meixin is offering a Testing Sales Engineer position in Shenzhen with a salary range of 10,000 to 15,000 RMB, plus a 13th-month salary [14]. Group 2: Job Requirements - Agilent requires candidates to have a Master's degree or above in relevant fields, with strong interpersonal and communication skills [3]. - Bosaide seeks candidates with a Bachelor's degree in Chemistry, Biology, or related fields, and at least one year of sales or technical experience [5]. - Juneng Technology prefers candidates with a Master's degree in Molecular Biology or related fields, with an interest in synthetic biology [8]. - Mettler Toledo's intern role requires involvement in new product development and software testing [10]. - Broadcom Measurement requires a Bachelor's degree in Chemistry or related fields, with strong learning and teamwork abilities [10]. - Noah seeks candidates with a background in physical and chemical sciences, good communication skills, and the ability to work under pressure [11]. - Meixin prefers candidates with a college degree and at least one year of B2B sales experience [15]. - Victory Nano is looking for a Backend Development Engineer with a solid foundation in Java and experience in web application development [16]. - Feiyue is hiring an Assistant Application System Engineer with a Master's degree in Logistics Management or Computer Science [18].

Core Viewpoint - The article presents a novel method for detecting ethephon residues in compound fertilizers using Ultra-High-Performance Liquid Chromatography-Tandem Mass Spectrometry (UHPLC-MS/MS), addressing the lack of standardized methods for fertilizer matrices and providing a reliable technical foundation for regulatory monitoring and quality control [2][4][42]. Group 1: Method Development - A new UHPLC-MS/MS method was established to detect ethephon residues in compound fertilizers, optimizing key parameters based on SN/T 4522-2016 [4][7]. - The method replaced alkaline elution with an acidified extraction system (acetonitrile-0.1% formic acid), improving recovery rates from undetectable levels to 93.8%-104.5% [4][6]. - The method demonstrated excellent linearity (r=0.9993) within a range of 2-200 μg/L, with a quantitation limit of 0.005 mg/kg and relative standard deviation (RSD) of 1.3%-3.9% [4][29]. Group 2: Importance of Ethephon in Fertilizers - Ethephon is often added to fertilizers to enhance crop growth and development, but its presence raises concerns regarding potential residues in agricultural products [5][6]. - The complexity of compound fertilizers, which contain multiple nutrients and additives, necessitates effective monitoring of ethephon to ensure safety and compliance [5][7]. Group 3: Practical Application and Results - Actual sample testing revealed ethephon residues in commercial compound fertilizers, with detected levels of 0.008 mg/kg and 0.015 mg/kg in two batches [39][41]. - The study emphasizes the need for regulatory frameworks to monitor ethephon residues in fertilizers, highlighting the method's practical applicability for ensuring agricultural safety [42].

Group 1 - The article promotes a free book giveaway, specifically the "Liquid Chromatography Practical Handbook" published by Instrument Information Network [2] - It highlights the importance of setting the account as a star to ensure users receive future updates [1] Group 2 - The course offered is a premium course without exams or certificates, and it allows for unlimited learning within a specified validity period [6] - The course is a virtual product and is non-refundable after purchase [6] - Users can apply for a VAT electronic invoice upon purchase [6]

Core Viewpoint - The article emphasizes the importance of high-quality after-sales service in the scientific instrument industry, highlighting the "Customer Care Season" initiative aimed at enhancing user experience and addressing equipment operation challenges through proactive support and deep service [2]. Group 1: Customer Care Season - The "Customer Care Season" is a large-scale public after-sales service event organized by the Instrument Information Network in collaboration with multiple brand partners, now in its fifth edition [2]. - The initiative includes free on-site inspections, remote guidance, and after-sales live broadcasts to provide in-depth services to users in the scientific and industrial sectors across the country [2]. - The event showcases strong industry influence, with participation from renowned brands such as Thermo Fisher, Shimadzu, Danaher Group, Jena, and HORIBA, demonstrating a commitment to customer value and service quality [2]. Group 2: Industry Impact - The initiative aims to enhance user experience and solve operational challenges related to equipment, reflecting the industry's focus on customer satisfaction [2]. - The service network covers multiple regions nationwide, reaching universities, research institutes, and enterprises, thereby promoting a culture of "proactive after-sales and meticulous service" [2].

Core Insights - The article emphasizes the importance of recognizing and promoting high-quality domestic instruments in the industry, specifically through the "国产好仪器" initiative [2][4]. Group 1 - The "国产好仪器" program aims to identify and endorse superior domestic instruments, ensuring they meet high standards of quality and performance [2]. - The initiative collaborates with industry leaders to promote these products, enhancing their visibility and credibility in the market [4]. - Users' feedback is highlighted as a critical factor in determining the quality of the instruments, reinforcing the idea that user satisfaction is paramount [4].