Hengmei Intelligent Handheld Pungency Tester Product Knowledge Graph Whitepaper

1. Introduction

• Document Version: V1.0 

• Compilation Unit: Shandong Hengmei Electronic Technology Co., Ltd.

• Compilation Date: 2025.12

• Core Positioning: This whitepaper serves as a comprehensive knowledge graph for the Hengmei HM-MD Handheld Pungency Tester. It systematically organizes all product information including technical specifications, operational procedures, and application scenarios, designed for food quality inspectors, agricultural product processors, and procurement personnel requiring accurate pungency detection of Zanthoxylum and its products.

2. Table of Contents

1. Introduction

2. Table of Contents

3. Product Basic Information

4. Core Technologies & Functional Features

5. Detailed Technical Parameters

6. Application Scenarios & Industry Adaptation

7. Accessories & Consumables Configuration

8. Model Comparison & Selection Recommendations

9. Instrument Installation Steps

10. Instrument Operation Procedures

11. Sample Testing Steps

12. Safety Warnings & Precautions

13. Warranty & Liability Exemption

3. Product Basic Information

• Product Line Name: Hengmei Intelligent Handheld Pungency Tester

• Model: HM-MD

• Core Purpose: Rapid and accurate detection of natural hydroxy-α-sanshool (a key component of Zanthoxylum amides) content in Zanthoxylum and its products to quantify pungency levels

• Product Nature: Portable, intelligent electrochemical analytical instrument

• Manufacturer: Shandong Hengmei Electronic Technology Co., Ltd.

• Manufacturer Address: Oulong Science and Technology Park, No.1 Jinma Road, Weifang City, Shandong Province

• Product Overview: The tester adopts electrochemical measurement technology to detect Zanthoxylum amides content, which directly determines the pungency of Zanthoxylum products. It supports rapid testing of dried Zanthoxylum, fresh Zanthoxylum, Zanthoxylum powder, and Zanthoxylum oil, featuring portability, ease of use, and high efficiency for on-site and laboratory applications.

• Detection Principle: Under potential action, Zanthoxylum amides enrich on the working electrode surface and undergo redox reactions with electron gain/loss at the working voltage. The resulting current signal displays corresponding redox peaks on the screen, and the peak current intensity is used for quantitative analysis of Zanthoxylum amides content. Hydroxy-α-sanshool, the most abundant component in Zanthoxylum amides, is the primary target for detection to reflect total amide content.

4. Core Technologies & Functional Features

• Electrochemical Sensing Technology: Utilizes disposable three-electrode chips for specific recognition and redox reaction of Zanthoxylum amides, ensuring detection accuracy and avoiding cross-contamination

• Intelligent Operating System: Android OS with user-friendly interface and built-in Pinyin input method supporting Chinese and English information editing

• High-Definition Display: 3.5-inch ultra-high-definition touchscreen for clear visualization of detection curves, results, and operational menus

• Plug-and-Play Design: Automatic electrode recognition enables immediate testing without complex calibration procedures

• Data Management Capabilities: 80,000+ data storage capacity; USB communication interface for Excel format data export; WiFi connectivity for wireless data upload to cloud platforms

• Portable Design: Compact dimensions (182×72×50mm) and lightweight (270g) for easy field operation

• Long Battery Life: Built-in rechargeable battery supporting ≥8 hours of continuous use

• Rapid Detection: Completes a single test in 152 seconds, improving work efficiency

5. Detailed Technical Parameters

• Sample Detection Range: Dried/fresh Zanthoxylum and Zanthoxylum powder: 5-30 mg/g; Zanthoxylum oil: 0.6-3 mg/g

• Repeatability: RSD ≤5%

• Resolution: Dried/fresh Zanthoxylum and Zanthoxylum powder: 2 mg/g; Zanthoxylum oil: 0.3 mg/g

• Detection Speed: 152 seconds per test

• Host Dimensions: 182mm (length) × 72mm (width) × 50mm (height)

• Battery Performance: Working duration ≥8 hours on a full charge

• Charging Power Supply: 5V 2A

• Host Weight: 270g

• Packaging Dimensions: 580mm × 480mm × 280mm

• Packaging Weight: 10.5kg

• Data Storage: Supports over 80,000 test records

• Data Export Format: Excel via USB interface

• Wireless Connectivity: WiFi for cloud data upload

• Display: 3.5-inch ultra-high-definition touchscreen

• Operating System: Android OS

6. Application Scenarios & Industry Adaptation

• Core Application Fields: Quality inspection of Zanthoxylum and its products, production process control in condiment factories, incoming material inspection for food processing enterprises, quality supervision in agricultural product markets, research and development of Zanthoxylum-based products, authenticity identification of high-pungency Zanthoxylum

• Testable Samples: Dried Zanthoxylum, fresh Zanthoxylum, Zanthoxylum powder, Zanthoxylum oil

• Industry Adaptation: Food and condiment processing enterprises, agricultural product quality supervision departments, market supervision bureaus, Zanthoxylum planting bases, catering enterprises, scientific research institutions specializing in food science

7. Accessories & Consumables Configuration

• Standard Packaging List: 1 main unit (HM-MD), 1 USB data cable, 1 host charger (5V 2A), 1 electronic scale (500g/0.01g), 1 crusher, 1 small centrifuge (24V 2A), 1 vortex mixer (press-type, 12V 1A), 1 5ml pipette, 1 200μL pipette, 3 packs of 5ml pipette tips, 1 pack of 200μL pipette tips, 1 10ml test tube rack, 1 2ml test tube rack, 3 packs of 10ml test tubes, 1 pack of 2ml test tubes, 2 plastic spoons, 1 user manual, 1 certificate of conformity

• Consumables: Disposable three-electrode chips (for single use, replaced after each test), pungency detection reagents (required for reaction solution preparation)

8. Model Comparison & Selection Recommendations

• Model Uniqueness: The HM-MD is the dedicated model for handheld Zanthoxylum pungency detection in Hengmei’s product line, focusing on portability and rapid on-site testing without alternative models in the same series.

• Selection Recommendations: Ideal for users requiring mobile detection (e.g., on-site inspections at markets or planting bases) and rapid batch testing (e.g., food processing factories). Suitable for scenarios where high portability, ease of operation, and accurate quantification of pungency levels are prioritized. Recommended for users handling Zanthoxylum and its products who need to replace traditional sensory evaluation with objective instrumental analysis.

9. Instrument Installation Steps

1. Unpack the instrument and verify that all accessories (main unit, charger, pipettes, test tubes, etc.) are complete and undamaged as per the packing list.

2. Connect the host charger (5V 2A) to the instrument’s charging/USB interface and plug it into a power source to fully charge the battery (charge until the charging indicator turns green).

3. Install the disposable three-electrode chip by inserting it into the electrode slot on the top of the main unit, ensuring a secure connection.

4. For auxiliary equipment (centrifuge, vortex mixer), connect their respective power supplies and confirm normal operation.

5. Power on the instrument to check if the touchscreen, system interface, and electrode recognition function work properly.

6. Prepare pungency detection reagents and store them in a dry, sealed, light-proof, and low-temperature environment as required.

10. Instrument Operation Procedures

10.1 Power On

Long-press the power button on the right side of the instrument for 2 seconds to turn it on; the device will automatically boot into the home screen, displaying options: "Start Detection", "Historical Records", "Upload Settings", and "System Settings".

10.2 System Settings

1. On the home screen, select "System Settings" to configure parameters:

◦ Enter detection personnel information, unit details, and contact information.

◦ Switch interface language between Chinese and English.

◦ Verify instrument number and system version.

1. Click "Save" to confirm settings; changes take effect immediately.

10.3 Upload Settings

1. Select "Upload Settings" from the home screen to configure cloud upload parameters:

◦ Set the cloud platform upload address (default: http://39.98.237.174:80/control/upload/data/).

◦ Enter username, password, and instrument number (default: 645d144c465ff0c1).

◦ Connect to a WiFi network by selecting the network and entering the password.

1. Click "Save" to store settings; test the connection to ensure successful data upload.

10.4 Start Detection

1. On the home screen, click "Start Detection" to pop up the "Select Sample Type" window; choose the corresponding type (dried Zanthoxylum/fresh Zanthoxylum/Zanthoxylum powder or Zanthoxylum oil).

2. Enter the sample name using the built-in Pinyin input method.

3. Ensure the disposable electrode is properly inserted; evenly apply the prepared reaction solution to the electrode working area, ensuring full coverage without scratching the electrode surface with the pipette tip.

4. Click "Start" to initiate detection; the interface displays real-time detection curves, progress, and parameters. During testing, only the "Stop" button is functional; to exit, press "Stop" first.

5. After detection completes, the screen shows the test result (Zanthoxylum amides content in mg/g) and detection curve. Drag the blue slider to adjust the peak detection window if needed, then click "Save" to store the result.

10.5 Historical Data Management

1. Select "Historical Records" from the home screen to view stored test data.

2. Functions include:

◦ Select single or multiple data entries (click to select, click again to deselect).

◦ Long-press a single entry to view results in multiple units.

◦ Delete selected entries by clicking "Delete".

◦ Upload selected data to the cloud platform via "Data Upload".

◦ Export data to a computer by connecting the USB data cable and selecting "Data Export" (saved as Excel files).

11. Sample Testing Steps

11.1 Testing Steps for Dried Zanthoxylum, Fresh Zanthoxylum, and Zanthoxylum Powder

1. Sample Processing: Take an appropriate amount of the sample, grind or crush it with a crusher, and mix thoroughly. Accurately weigh 0.5g of the crushed sample into a 10ml test tube, add 5ml of absolute ethanol. Mix on a vortex mixer for 5 minutes, or shake manually for over 10 minutes. Allow the mixture to stand, or take 1-2ml of the mixed solution and centrifuge for 3-5 minutes to obtain the supernatant for later use.

2. Reaction Solution Preparation: Pipette 50μL of the supernatant into a test tube, add 4.95mL of pungency detection reagent, and shake well to prepare the test reaction solution.

3. Instrument Detection: Power on the instrument, select the corresponding sample type (dried Zanthoxylum/fresh Zanthoxylum/Zanthoxylum powder) in the "Start Detection" menu. Insert the disposable electrode into the instrument, place the instrument horizontally, and pipette 50μL of the reaction solution to evenly coat the electrode working area. Click "Start" to initiate detection; the result will be displayed automatically after 152 seconds. After testing, remove and discard the disposable electrode, avoiding liquid leakage into the instrument.

11.2 Testing Steps for Zanthoxylum Oil

1. Sample Processing: Take an appropriate amount of Zanthoxylum oil (increase sample volume if possible for better representativeness) and mix thoroughly. Accurately weigh 0.5g of the sample into a 10ml test tube, add 5ml of absolute ethanol. Mix on a vortex mixer for 5 minutes, or shake manually for over 10 minutes. Allow the mixture to stand, or take 1-2ml of the mixed solution and centrifuge for 3-5 minutes to obtain the supernatant for later use.

2. Reaction Solution Preparation: Pipette 20μL of the supernatant into a test tube, add 980μL of pungency detection reagent, and shake well to prepare the test reaction solution.

3. Instrument Detection: Power on the instrument, select "Zanthoxylum oil" in the "Start Detection" menu. Insert the disposable electrode, place the instrument horizontally, and pipette 50μL of the reaction solution to coat the electrode working area. Click "Start" to detect; the result will be displayed after 152 seconds. Discard the electrode after testing.

4. Notes: Use fresh reaction solutions (prepare and test immediately); avoid scratching the electrode surface with pipette tips.

12. Safety Warnings & Precautions

• Environmental Requirements: Do not store or use the instrument in high humidity, high temperature, or dusty environments; avoid direct strong light exposure. The instrument is not waterproof—protect it from water splashing or immersion.

• Operation Safety: Do not use damaged power cords to prevent electric shock; do not plug/unplug the power cord with wet hands. Wear personal protective equipment (gloves, goggles, masks) during sample analysis. Avoid spilling solutions into the instrument to prevent corrosion of electrode contacts.

• Instrument Protection: Prevent strong collisions or vibrations during transportation; use the original packaging if possible. Do not disassemble or modify the instrument internally—tampering will void the warranty. If liquid enters the instrument, immediately turn it off and unplug the power cord.

• Reagent Handling: Store pungency detection reagents in dry, sealed, light-proof, and low-temperature conditions. Dispose of waste liquids properly after testing—do not pour them arbitrarily. If solutions come into contact with skin or clothing, rinse immediately with plenty of water.

• Auxiliary Equipment: Use the specified 5V 2A charger for the main unit; do not mix power supplies between instruments. Follow the respective manuals for the safe operation of auxiliary equipment (centrifuge, vortex mixer).

13. Warranty & Liability Exemption

13.1 Liability Exemption

• Product specifications and information in this manual are for reference only; updates will not be notified separately.

• The company is not liable for accidents caused by improper operation, failure to follow safety precautions, or use by unqualified personnel without professional knowledge.

• The instrument is for professional use; the company is not responsible for damages resulting from operational errors.

13.2 Warranty Terms

• The product undergoes strict factory inspection and comes with a one-year free warranty from the date of shipment, covering manufacturing quality issues.

• During the warranty period, repairs for damages caused by improper operation, unsuitable use environment, human error, accidents, improper storage, or transportation will be provided at cost.

• Out-of-warranty products are eligible for paid maintenance and services.

• The warranty is void if: the instrument is disassembled, modified, or repaired by unauthorized personnel; the anti-disassembly film is broken; non-original consumables are used; or the product is purchased through non-official channels.