Soil cation exchange capacity is an indicator of the soil's nutrient absorption capacity, and the detection of this parameter holds both social and economic significance. The HGK-75 ingeniously integrates a nitrogen determination apparatus with a cation exchange capacity apparatus, providing convenience and cost reduction for user testing.
HGK-75 Fully Automatic Soil Cation Exchange Capacity-Kjeldahl Nitrogen Determination Apparatus Product Overview:
The HGK-75 is designed for long service life, featuring 32-bit microcomputer intelligent control, an LCD color touchscreen for operation, and a Chinese menu-style interface for human-computer interaction. It automatically completes a series of processes including the addition of boric acid, alkali, diluent, distillation, titration, cleaning, storage, and printing. Titration is determined using the international standard colorimetric method, replacing traditional complex electrode potential and single-wavelength photoelectric colorimetry. The instrument is easy to operate, provides accurate data, and offers stable performance, with several technologies and structures being industry-firsts. The instrument judges the endpoint based on changes in the red, green, and blue primary color states, a technology renowned for its stability and anti-interference capabilities. Heguan employs a unique display technology that allows semi-quantitative judgment of whether ammonia distillation is complete.
HGK-75 Fully Automatic Soil Cation Exchange Capacity-Kjeldahl Nitrogen Determination Apparatus Product Features:
1. Minimum titration volume starting from 0.8μl, automatically adjusted based on standard acid concentration to maximize titration accuracy.
2. Standard acid titration volume ranges from 0ml to 60ml, unrestricted by burette volume.
3. Equipped with various safety door detection, reagent level detection, digestion tube presence detection, automatic disposal of digestion tube and reaction cup waste, real-time automatic detection of cooling water flow and pressure, and automatic shutdown of condenser water when the instrument is idle.
4. Real-time detection and control of distillation cup temperature.
5. Dual manual and automatic modes to facilitate testing of special samples.
6. Intermittent alkali addition ensures acid-base reactions remain controllable, preventing heat generation and ammonia escape due to violent acid-base reactions in the absence of steam.
7. Adjustable distillation power: Distillation can be performed within a 0-100% power range to meet users' specific testing requirements.
8. Internal connecting pipelines meet specific requirements and are maintenance-free for 3 years.
9. All reagents are measured and added using liquid pumps, quantified in ml.
10. Titration and distillation are performed simultaneously.
11. The reaction cup is externally placed, unaffected by external light sources.
12. Data and testing conditions are traceable, with unlimited data storage capacity to meet data storage needs throughout the instrument's effective lifespan. Data can also be output via USB interface.
13. Quality control data is stored for each test, and quality control charts can be printed.
HGK-75 Fully Automatic Soil Cation Exchange Capacity-Kjeldahl Nitrogen Determination Apparatus Technical Parameters:
1. Measurement range: 0.1-210mg nitrogen (0.07cmol/KG-14mol/KG)
2. Distillation time: 0-9 minutes/sample
3. Distillation capacity: 0~30ml/min, adjustable
4. Titration accuracy: ≤0.0015μl/step; minimum titration volume: 0.8μl/step
5. Repeatability: RSD≤0.5%
6. Recovery rate: >99.5%
7. *Linear range: Within a 1-4 times sample quantity range for the same sample, RSD<1.5% (nitrogen content 3-150mgN, used as an acceptance indicator)
8. Reagent pump volume: 0-150ml, 1ml per level
9. Standard acid titration volume: Unlimited
10. Delay time: 0-3600s (suitable for nitrate nitrogen detection)
11. Distillation power: 0-1500W, adjustable
12. Power supply: AC220V±10%, frequency 50-60Hz