Fully automatic liquid-liquid extractor for closed petroleum animal oil determination

Fully automatic liquid-liquid extractor for closed petroleum animal oil determination

SPHERE OF APPLICATION►∣Scope of application:SPHERE OF APPLICATION

Meet the national standard: "GB 7494-87 Determination of anionic surfactants in water quality - spectrophotometric method"

Meet the national standard: "HJ 970-2018 Determination of Water Quality and Petroleum by UV spectrophotometry"

Meet the national standard: "HJ 503-2009 Determination of volatile phenols in water quality -4-amino spectrophotometric method"

Meet the national standard: GB/T 16488-1996 Water quality - Determination of petroleum and animal and vegetable oils - Infrared photometric method

Meet the national standard: "HJ 637-2018 Water Quality - Determination of Petroleum and Animal and Vegetable Oils - Infrared Spectrometric Method"

Meet the national standard: "GB/T 16488-1996 Water quality - Determination of petroleum and animal and vegetable oils - Infrared photometric method"

THE MAIN CHARACTERISTICS ► ∣ Main features：

1. 7-inch large LCD touch screen with one click system operation, simple and convenient

2. Supports the use of multiple specifications of extraction bottles (250/500/1000ml), and the gas valves are all made of PTFE material

3. A 6-digit operating system that can independently complete the extraction of 6 sets of samples

4. Extraction time, interval time, and extraction cycle can be independently set and adjusted as desired

5The extraction rate can be independently adjusted as desired

6Automatic extraction, automatic venting, automatic collection, automatic drainage, automatic cleaning and other functions

7Equipped with a retractable waste liquid tank and a filtration system, there is no need for manual drainage

8The device is equipped with built-in air purification function to ensure the cleanliness of the extraction gas path

9Equipped with waste liquid activated carbon filtration and purification function, reducing environmental pollution

10Can remotely operate the machine on the mobile phone, and has SMS reminder function (optional)

Technical Parameters:

1extraction

(1) Time setting: 0-999s; (2) Extraction times: 0-99 times; (3) Extraction interval time 0-999 seconds;

(4) Extraction strength: The strength can be adjusted arbitrarily; (5) Layering method: automatic extraction program running, automatic static layering, manual liquid dispensing;

2. Cleaning

(1) Time setting: 0-999s; (2) Cleaning frequency: 0-99 times;

(3) Cleaning interval time 0-999 seconds; (4) Cleaning method: pressure scattering wide-angle cleaning;

3. Sample addition: automatic sample addition

4. Waste liquid treatment: The waste liquid is collected and processed by filtration and adsorption in activated carbon storage tanks, and is suitable for extraction experiments of different samples;

5. Exhaust gas treatment: Automatic exhaust, the exhaust gas is collected and treated centrally after being filtered and adsorbed by a filtering storage tank.

6. Operation mode: 7-inch color touch screen

7. Sample quantity: 6 people, standard configuration includes 6 250ml or 500ml or 1000ml or 2000ml extraction bottles (standard configuration includes 1000ml)

8. Rated power: 400W 9. Rated voltage: 220V ± 22v

Fully automatic liquid-liquid extractor for closed petroleum animal oil determination

The "reagent addition method" of liquid-liquid extractor is a key design point that affects experimental efficiency, accuracy, and safety. According to the current mainstream models (such as CHCQ-6, CHZDCQ-6, etc.), reagent addition is divided into two categories: manual injection and automatic injection. The difference lies not only in the operation action, but also in the repeatability control, personnel exposure risk, and system integration.

Comparison of core differences
Dimension manual reagent input, automatic reagent input
The experimental personnel need to manually open the cabin door and use a pipette/graduated cylinder to add extractant 19 tube by tube. The high-precision injection pump or metering pump will automatically inject quantitatively, and the entire process will be closed and closed-loop
Accuracy control relies on personnel experience, with large errors (commonly ± 0.5-1 mL). The injection accuracy can reach ± 0.1 mL and supports multi-channel independent settings (such as A/B/C/D reagents)
Safety protection: Exposure to the risk of organic solvent volatilization (such as dichloromethane, n-hexane) is completely non-contact, avoiding inhalation of toxic reagents and skin contact
Flux and consistency: Multiple samples are prone to fatigue, leading to uneven liquid addition. RSD (relative standard deviation) is usually ≥ 5%. Each channel parameter is independently controllable, and parallel experiments have RSD ≤ 3% to ensure data comparability
Suitable for high-throughput and high compliance scenarios such as third-party testing and environmental monitoring stations in laboratories with limited budgets, small sample sizes, simple types of reagents, or the need for flexible adjustment of ratios
Additional explanation: Automatic injection is often paired with "gradient addition" and "circulation replenishment" functions (such as automatic replenishment when the single addition amount is insufficient), while manual mode, although low-cost, requires additional configuration of a fume hood or activated carbon filtration device to compensate for safety shortcomings.
Conclusion/Suggestion
Automatic reagent feeding is superior to manual reagent feeding in terms of accuracy, safety, and throughput, especially suitable for laboratories with strict requirements for data reliability and personnel health; Manual reagent injection is more suitable for teaching demonstrations, early method development, or small and medium-sized laboratories with limited funding. If you are concerned about long-term usage costs, although automatic models require high initial investment, they can reduce solvent waste rates (about 15-20%) and manpower review time. The investment payback period is usually within 12-18 months