ST-115CS Fully automatic Kjeldahl nitrogen analyzer
Name: Automatic Kjeldahl nitrogen analyzer
model: ST-115CS=ST115C+STZ-08C
ST-115CS Kjeldahl nitrogen determination method is a classic method
for determining nitrogen. The Kjeldahl method is used to determine
soil, food, animal husbandry, agricultural products, feed, and
other nitrogen-containing compounds. When using this method to
determine samples, three processes are required: sample digestion,
distillation separation, and titration analysis
The ST-115CS fully automatic Kjeldahl nitrogen analyzer is a
"nitrogen element" (protein) analysis system developed based on the
classic Kjeldahl nitrogen analyzer method, using fully automatic
distillation titration technology and color method to determine the
endpoint. Its method and manufacturing comply with the
manufacturing standards of "GB/T 33862-2017 Fully (Semi) Automatic
Kjeldahl Nitrogen Analyzer" and relevant international standards
Product Features:
●The operating system adopts a 7-inch color touch screen, with easy
human-machine dialogue operation and easy learning
●The three-level permission management, electronic records,
electronic tags, and operation traceability query system meet the
relevant certification requirements
●The system automatically shuts down after 60 minutes of unmanned
operation, which is energy-saving, safe, and reassuring
● Choose R, G, B coaxial three color light sources and three color
sensors, with a wide range of color adaptability and high accuracy
●Automatic adjustment of R, G, and B light intensity suitable for
analyzing samples of different concentrations
●The three titration curves of R, G, and B can observe the changes
in the sample during the titration process, providing assistance
for analysis
●The titration cup is installed in an open manner, making it
convenient for users to observe the titration process and clean the
titration cup
●Imported linear motor and injection needle tube form a "plunger
titration pump" with high control accuracy and stability
●The titration speed can be set arbitrarily from 0.05ml/second to
1.0m/s
●Distillation time can be freely set from 10 seconds to 9990S
●The instrument has a built-in protein coefficient query table for
users to access, query, and participate in system calculations,
making it convenient for users to use
●16M data storage capacity can store 1 million sample data for
reference, 5.7CM automatic paper cutting thermal printer
●99 groups of users set up their own program (recipe) management
system
● Measurement of "nitro" class samples through delay analysis
●The metal material (304 stainless steel) steam pot has stable,
reliable, and pressure resistant performance
● Leakage protection system prevents leakage and electric shock to
ensure the safety of operators
●The digestive system does not add reagents or heat to prevent
injury from reagents or steam
●The safety door is not closed and the system does not work. The
5mm thick transparent safety door ensures personal safety
●Automatic shutdown and alarm of steam system water shortage system
to prevent accidents from occurring
●Automatic shutdown and alarm of steam boiler overheating system
Technical Index:
| Analysis range | 0.1-240 mg N |
| Precision (RSD) | ≤ 0.5% |
| Recovery rate | 99-101% (± 1%) |
| Titration accuracy | 0.2 μ L/step |
| Titration speed | 0.05-1.0ml/s can be set arbitrarily |
| Distillation time | 10-9990S, freely adjustable |
| Sample analysis time | 4-6min/(cooling water temp 18 ℃) |
| Concentration range of titrant | 0.01-5 mol/L |
| Titration cup volume | 300ml |
| Data storage capacity | 1 million sets of data |
| Printer | 5.7CM thermal automatic paper cutting printer |
| Delay analysis | reaction time 0-2h |
| Delay alkali addition time | 0-999s |
| Automatic shutdown time | 60min |
| Working voltage | AC220V/50HZ |
| Heating power | 2000W |
| Dimensions | 500 * 460 * 710mm |
| Net weight | 36Kg |
| Printer | 5.7CM thermal automatic paper cutting printer |
| Communication interface | refrigeration cycle unit |
| Titration concentration input method | manual input |
Note: The appearance pictures, dimensions, volume, and weight of the
instrument are for reference only. If there are any updates to the
instrument, there may be slight changes without prior notice.
Packing List
| Number | Name | Quantity | Unit | Note |
| 1 | Reagent bucket | 3 | Piece | |
| 2 | Waste liquid tank | 1 | Piece | |
| 3 | Reagent pipeline | 4 | Root | |
| 4 | Cooling water pipe | 2 | Root | |
| 5 | Power cord | 1 | Piece | |
| 6 | M19 open-end wrench | 1 | Piece | |
| 7 | 5.7cm printing paper | 8 | Roll | |
| 8 | 1L titrant reagent bottle | 1 | Piece | |
STZ-08C Digital precision digestion furnace:
Product features:
● The heating element (module) is made of aluminum alloy precision
casting and processing, which is acid and alkali resistant and has
a long service life
● The furnace hole temperature is continuously adjustable, with a
fast heating rate and a wide range of applications
● The temperature difference between the pores is small, the sample
digestion consistency is good, the thermal efficiency is high, and
it is conducive to the digestion of the sample
● The instrument table and test tube rack are welded with brushed
stainless steel plates, which have a certain anti-corrosion ability
● Adopting a new generation LCD temperature controller with
functions such as timed shutdown and alarm, PID intelligent control
technology, high temperature control accuracy, small temperature
fluctuation amplitude, and easy to learn
● Optional 30 segment program heating function to meet users'
various experimental needs
Parameter indicators:
| Number of heating hole | 8 |
| Volume | 250ml |
| Design temperature | RT--500℃ |
| Temperature control method | LCD display, intelligent PID control |
| Temperature control accuracy | ± 1 ℃ |
| Heating rate | ≈ 20℃/min |
| Voltage | AC220V |
| Power | 2KW |
| Current | 9A |
| Heating elemen | Nickel chromium wire aluminum alloy heating plate |
Note: The appearance pictures, dimensions, volume, and weight of the
instrument are for reference only. If there are any updates to the
instrument, there may be slight changes without prior notice.
Shandong Shengtai Instrument Co., Ltd. provides the following
quality assurance for the instruments sold to you:
----The provided instrument materials are brand new, meet national
quality standards, and have a manufacturer's certificate of
conformity;
----The materials and main components provided meet the technical
requirements specified in the technical documentation;
----The overall quality assurance period of the equipment is one
year (excluding normal wear and tear of vulnerable parts).
----We are responsible for free maintenance of any instrument
quality issues that occur during the warranty period. Due to
equipment malfunction caused by the user's responsibility, we are
responsible for repairing and charging reasonable fees.
----Lifetime discounted supply of parts for equipment, and lifetime
maintenance and repair of the entire machine.
----After the expiration of the warranty period, if the user needs
maintenance and technical services, we will only charge a cost fee.
