Henan Junhan Scientific Instrument Co., Ltd

Organic fertilizer maturity detector

JH-OMD3000

Organic Fertilizer Maturity Detector

C/N ratio method · Accurate determination of maturity · Full process intelligent detection

1、 Product Overview

Organic fertilizer maturity detectorJH-OMD3000 (Organic Maturity Detector) is a professional instrument developed by Henan Junhan Scientific Instrument Co., Ltd. specifically for rapid determination of organic fertilizer maturity, filling the gap in automated detection equipment for organic fertilizer maturity in China.

Maturity is the core indicator of the safety and efficiency of organic fertilizer application. Insufficient application of organic fertilizer to farmland can lead to problems such as seedling burning, transmission of pathogenic microorganisms, and soil hypoxia.JH-OMD3000 provides reliable testing data support for organic fertilizer production enterprises, organic agricultural bases, and quality inspection institutions by accurately measuring the C/N ratio (carbon nitrogen ratio) of organic fertilizer samples and scientifically determining the maturity level.

Detection principle: The instrument is first usedPotassium dichromate photometric methodAccurately determine the total organic carbon of the sample（TOC）， 再利用Na ShiDetermination of total nitrogen by photometric method（TN）， Finally calculate the C/N ratio.

2、 Maturity determination criteria（C/N ratio method

JH-OMD3000 classifies the maturity of organic fertilizers based on the C/N ratio, and the judgment criteria refer to NY/T 525-2021 "Organic Fertilizers" and relevant international standards:

3、 Testing process

JH-OMD3000 realizes the integrated sequential determination of TOC and TN, with full automation and easy operation:

first step sample pretreatment

● Grind and sieve the organic fertilizer sample（0.149 mm）， Take 0.5 g and place it inDigestive bottle.

● System built-in pre-processing video guide for beginnersYou can master the operation essentials in 5 minutes.

Step two Total organic carbon（TOC measurement

● Potassium dichromate heatingCatalytic oxidation.

● Test the total organic carbon on the machine（TOC content.

Step three Total nitrogen（TN measurement

● The Kjeldahl digestion method converts various forms of nitrogen in the sample into ammonium nitrogen（NH₄⁺）。

● Accurate detection of solution absorbance using photometric method, calculationTN content (%).

Step fourC/N ratio calculation and maturity assessment

● calculateC/N = TOC（%）/ TN（%）。

4、 Main functional features

4.1 Integrated TOC+TN sequential detection

● TOC and TN are completed sequentially in the same instrument, eliminating the need for two devices and saving laboratory space and costs.

● Full process, fromSample processingtoresultOutput only requires about45 minutes, an efficiency increase of 60% compared to traditional methods.

4.2 Accurate and stable optical detection system

● Using a four wavelength cold light source+Silicon semiconductor receiver, with a wavelength range of 100-1200 nm, meets the detection needs of different organic fertilizer substrates.

● Repetitive Wu poor ≤ 0.01%, linear wu difference ≤ 0.1%, detection accuracy meets more than 10 times the national standard requirements.

● Built in intelligent automatic calibration function, ready to use upon startup, stability drift ＜0.02%/2 hours.

4.3 Intelligent Operation and Data Management

● 7-inch capacitive touch screen (resolution 1024 × 600), bilingual switching between Chinese and English, with an intuitive and user-friendly interface.

● Android intelligent operating system, equipped with multi-core processors and8GB of large memory, smooth and stable operation.

● supportWiFi/Ethernet connection, real-time upload of detection data to Junhan Cloud Agricultural Data Center, supporting multi account management, historical data query, and table export.

● built-inGPS positioning, automatic correlation of detection results with geographic location, achieving full traceability of data throughout the process.

● Equipped with a high-speed thermal printer, one click generation of standard testing reports containing QR codes and application suggestions.

4.4 Compatible with multiple categories of organic fertilizers

● Suitable for composting various organic materials such as livestock manure, straw, sludge, kitchen waste, and commercial organic fertilizers.

● built-in200+organic fertilizer standard sample databases, supporting custom maturity threshold settings.

4.5 Adaptive design for all scenarios

● Dual purpose AC/DC power supply (built-in)4800mAh lithium battery, with a battery life of 10 hours, supports continuous operation in field testing stations.

● high-intensityPVC engineering plastic portable box, protection level IP65, dustproof and waterproof, resistant to harsh environments.

● support6-channel synchronous detection (expandable to 12/18/24 channels), meeting the high-throughput detection needs of batch samples.

5、 Technical parameters

6、 Testing items (expandable)

JH-OMD3000 focuses on maturity testing and is equipped with corresponding reagent kits to expand the following testing items, meeting the comprehensive quality assessment needs of organic fertilizers:

Organic fertilizer conventional indicators (optional):

● Organic matter content, humic acid (water-soluble state)/Free state/total humic acid

● Total nitrogen, total phosphorus, total potassium

● PH value, moisture content (moisture)

● Trace element: Calcium（Ca）、 Magnesium (Mg), sulfur (S), iron (Fe), manganese (Mn), boron (B), zinc (Zn)

Heavy metal detection (optional):

● Lead（Pb）、 Arsenic (As), Cadmium (Cd), Chromium (Cr), Mercury (Hg)

● conform toNY/T 525-2021 Standard Requirements for Heavy Metal Content in Organic Fertilizers

7、 Application scenarios

8、 Execution standards and compliance certification

● NY/T 525-2021 "Organic Fertilizer" Maturity C/N Ratio Determination Criteria

● GB/T 32951-2016 "Determination of Penicillin Content in Organic Fertilizers" (Reference)

● NY/T 1429-2010 "Determination of Total Nitrogen in Soil and Water Samples by Kjeldahl Method"（reference）

9、 After sales service commitment

Henan Junhan Scientific Instrument Co., Ltd. provides eachJH-OMD3000 provides the following service guarantees:

● Warranty Policy: The entire machine is guaranteed for one year with lifetime maintenance (excluding human damage).

● Training support: Free on-site installation, debugging, and operation training are provided, along with electronic operation manuals and instructional videos.

● Technical response: Provide24-hour technical hotline support, engineers remotely assist in troubleshooting difficult problems.

● Reagent supply: Provide long-term stable supply of standard reagent kits to ensure continuity of testing.

● Data Services: Free use of cloud platform, secure storage of data, support for cross device and multi account management.

10、 Keyword Index（SEO reference)

C/N ratio detector, organic fertilizer detector, maturity tester, total organic carbon detector, TOC detector, total nitrogen detector, organic fertilizer quality testing, compost maturity testing, organic fertilizer C/N ratio determination JH-OMD3000、 Junhan Organic Fertilizer Detector