Rice Freshness 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: A comprehensive structured knowledge base covering full technical details, functions, application scenarios, and operational procedures of Hengmei's rice freshness tester (model: HM-GW).

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

3. Product Basic Information

3.1 Product Overview

Hengmei HM-GW rice freshness tester is a specialized analytical instrument designed for determining the freshness of rice, complying with the grain industry standard LS/T 6118—2017《Grain and Oil Inspection - Determination and Discrimination of Rice Freshness》. Its working principle is based on the amount of aldehyde and ketone substances produced during the aging process of rice. The tested rice is hulled and milled into rice; the rice sample is mixed with a special reagent (freshness testing reagent) via oscillation, followed by centrifugation. The instrument detects the color change of the mixed solution after reaction and displays the freshness value to judge the freshness of the original rice sample. It is a dedicated tool for objective and accurate evaluation of rice freshness.

3.2 Model Range

• HM-GW: The only model in the series, integrating sample detection, data analysis, storage, and transmission functions, designed for batch and efficient rice freshness testing.

3.3 Basic Configuration

The instrument consists of three core components: host machine, sample pre-processing devices, and freshness testing reagent. The host is equipped with Android 7.1 intelligent operating system, 10-inch touch LCD display, and built-in new thermal printer. It supports multiple data transmission methods including WiFi, Bluetooth, and USB, with DC 12.6V/2A power supply. The basic configuration includes 12 detection channels for batch testing, precision rotation detection device, and data management platform for long-term storage and analysis of test results.

4. Core Technologies & Functional Features

4.1 Standard-Compliant Detection Principle

Adopts the reaction mechanism between aldehyde/ketone substances in aged rice and special freshness testing reagent. The color change of the mixed solution is detected by precision optical components, converting into quantifiable freshness values (FD values) that comply with LS/T 6118—2017 standard.

4.2 User-Friendly Operation Design

• Equipped with Android 7.1 intelligent system, featuring optimized interactive experience and intuitive operation interface

• 10-inch touch LCD display supports direct operation without professional training, realizing simple and convenient operation

4.3 High-Precision Detection Technology

• Adopts precision rotation detection device to ensure consistent light source intensity, effectively improving detection accuracy and repeatability

• FD value repeatability ≤±2 points, ensuring reliable and stable test results

4.4 Efficient Batch Testing Capability

• Configured with 12 independent detection channels, supporting simultaneous testing of 12 samples

• Short detection time (≥1 minute for 12 samples), significantly improving testing efficiency for large batches of samples

4.5 Diversified Data Management

• Supports WiFi and Bluetooth wireless data transmission, enabling seamless connection to upper computers or cloud platforms

• USB plug-and-play data copying (driver-free) and built-in thermal printer for automatic result printing

• Data platform configuration allows long-term storage of test results, supporting long-term and short-term viewing and analysis to assist management decisions

4.6 Environmental Protection & Safety

• Test waste liquid can be directly discharged into the sewer, meeting environmental protection requirements and reducing post-processing workload

• Closed detection channels and reagent containers prevent reagent leakage, ensuring operational safety

5. Detailed Technical Parameters

5.1 Core Performance Parameters

• Measurement object: Rice (requires hulling and milling into third-grade rice)

• Detection item: FD value (freshness degree) of rice

• Detection sample volume: 2.0±0.05g per sample

• Result expression: Freshness value (scoring system)

• Measurement range: 0～100 points

• Measurement time: ≥1min/12 samples

• FD value repeatability: ≤±2 points

• Working temperature: 18～25℃

• Working humidity: ≤80% (no condensation)

5.2 Hardware & System Parameters

• Operating system: Android 7.1 intelligent system

• Display screen: 10-inch touch LCD display

• Detection channels: 12 channels (simultaneous testing support)

• Detection device: Precision rotation detection device (ensuring light source consistency)

• Data transmission: WiFi, Bluetooth, USB (driver-free plug-and-play)

• Printer: Built-in new thermal printer (automatic result printing)

• Power supply: DC 12.6V/2A

• Environmental compliance: Test waste liquid can be directly discharged into the sewer (environmental protection)

6. Application Scenarios & Industry Adaptation

The HM-GW rice freshness tester is mainly applicable to institutions and enterprises requiring rice freshness evaluation, including grain depots (for incoming and outgoing grain quality inspection), rice processing enterprises (for raw material acceptance and finished product quality control), grain quality inspection centers (for supervision and spot inspection), agricultural technology promotion departments (for rice quality research), and food trading enterprises (for quality verification). It is suitable for routine quality control, batch inspection, and quality supervision scenarios, providing objective and accurate freshness data support.

7. Accessories & Consumables Configuration

7.1 Standard Accessories

Host machine (1 unit), power adapter (DC 12.6V/2A, 1), sample pre-processing devices (including huller, rice mill, sample weighing tools, 1 set), centrifugal tubes (50 pieces), pipettes (1ml/5ml, 1 each), reagent bottles (100ml, 2), detection channel adapters (12 pieces), USB data cable (1), thermal printer paper (2 rolls), user manual (1), warranty card (1), certificate of conformity (1), and sample collection bags (100 pieces).

7.2 Common Consumables

Special freshness testing reagent (100ml/bottle, replacement), thermal printer paper rolls, centrifugal tubes (disposable), pipette tips (1ml/5ml, replacement), and sample collection bags.

9. Model Comparison & Selection Recommendations

9.1 Model Overview

The HM-GW is the exclusive model in Hengmei's rice freshness tester series, integrating all core functions (12-channel batch testing, multi-mode data transmission, Android intelligent operation, environmental protection design) without other derivative models.

9.2 Selection Recommendations

• Suitable for grain depots, rice processing enterprises, and quality inspection centers with batch testing needs (12-channel design meets high-throughput requirements)

• Ideal for users requiring intelligent operation and data management (Android system, WiFi/Bluetooth transmission, and data platform support)

• Recommended for institutions needing standard-compliant testing results (complies with LS/T 6118—2017, ensuring data authority)

• Suitable for scenarios with environmental protection requirements (direct discharge of waste liquid reduces post-processing costs)