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Test principle
The evaporation cup in the test chamber is heated according to the set temperature, cooled, weighed, and the steps are repeated until the constant weight value is reached. Add the solution to be tested into the evaporating cup, heat and evaporate in a water bath, heat the cavity to 105°C for drying, and cool down. After the evaporating dish is cooled, use a balance (sensitivity: 0.01mg) to judge the constant weight, and the experiment is terminated if the constant weight requirement of the project is met.
Standard
Purified water: "Purified water" in Part Two of "Chinese Pharmacopoeia" 2020 Edition, "European Pharmacopoeia" EP9.0 WATER, PURIFIED
Pharmaceutical packaging materials: non-volatile items in the dissolution test of "National Standards for Pharmaceutical Packaging Materials"
Food contact materials: GB 31604.8-2016, EN 1186-3:2002 method A, Standards and Specifications for Utensils, Containers and Packages of Korea Ministry of Health and Welfare chapter IV 2-8.
Cigarette tipping paper: YQ/T 59-2015
Chemical reagents: GB/T 9740-2008
Water quality testing: GB 8538-2016, DZT0064.9-2021, GBT 14415-2007, GBT5750.4-2006
Solid samples (drugs, etc.): "Chinese Pharmacopoeia" 2020 Edition Four "Extraction" and "Loss on Drying" items, "United States Pharmacopoeia" USP40-NF35<921> WATER DETERMINATION
Specification
| Item | Technical Parameters |
| Measuring Range (Residue Weight) | (0 - 80) g |
| Resolution | 0.01 mg |
| Balance Range | (0 - 220) g |
| Constant Weight Error Value | 0.3 mg, can be set |
| Water Bath Temperature Control Range | Room temperature - 100℃ |
| Cavity Temperature Control Range | Room temperature - 125℃ |
| Temperature Accuracy | ±0.5℃ |
| Number of Samples | 9 (data are independent of each other) |
| Evaporating Dish Volume | 100 mL (200 mL can be customized) |
| Overall Dimensions | (900×880×900) mm |
| Power Supply | 220V, 50Hz |
| Rated Power | 4 KW |
| Operating System | Windows 10 Professional 64-bit |
Application
|
Purified water |
Applicable to the test of non-volatile content in purified water and sterile water for injection in the pharmaceutical industry. |
 |
Drug packaging material |
It is suitable for the test of non-volatile items in the dissolution test of plastic and rubber pharmaceutical packaging materials |
 |
Food contact material |
It is suitable for various food utensils, containers and food packaging films, cans or other food tools, pipes and other products made of polyethylene, polystyrene, polypropylene, perchlorethylene resin as raw materials in different food simulants Determination of total migration after immersion. |
 |
Cigarette pack material |
Applicable to the total migration test of the soaking liquid of cigarette tipping paper. |
 |
Chemical reagent |
Suitable for chemical reagents, such as ethanol, acetic acid, n-hexane, chloroform and other organic solvents with a boiling point below 100 °C for evaporation residue testing. |
 |
Domestic water and drinking water, industrial water, sewage |
It is suitable for the total dissolved solids test of domestic drinking water, drinking natural mineral water, ground water, drinking water, swimming pool water, urban sewage, industrial boiler water, etc. |
 |
Solid samples, pharmaceutical particles |
Applicable to solid samples, such as empty capsules, microcrystalline cellulose and other medicines, or other solid particles for loss on drying, dryness or moisture testing. |
Features
Cold and hot dual-chamber integrated control system, automatic upgrade
It has an integrated system design of water bath evaporation, drying, cooling, constant
weight, and reagent recovery, which can effectively avoid the influence of the external
environment on the experiment, and the test is automated, efficient, and precise.
The cavity has a built-in water bath, which can automatically detect the water level through
the liquid level sensor, automatically add water, replenish water and drain, and
automatically control the temperature of the water bath. Multiple safety designs ensure the
safe treatment of water temperature, water bath water and waste liquid discharge in an all
round way.
Temperature control: International advanced electromagnetic temperature control
technology is adopted to automatically control the temperature rise and fall, and the
temperature control accuracy is 0.5°C.
High-precision imported balance, isolation protection design
A high-precision imported balance is built in the chamber, with high weighing efficiency, the
balance resolution reaches 0.01 mg, and the 2-round drying process can reach a constant
weight of 0.3 mg.
The balance is placed in a fixed and stable protective cover with a water circulation
compartment. When performing evaporation and drying steps, the balance is completely
isolated from the test chamber, and when performing weighing, the temperature and
humidity are stable. The weighing data is stable and reliable, with good repeatability.
Meet the test requirements of high throughput and high applicability
The instrument is equipped with 9 test stations, and the data is independent, which can
meet the high-throughput test requirements and has high test efficiency.
The sample to be tested can be purified water, organic solvents such as n-hexane,
ethanol, acetic acid, chloroform, solid samples, powder, etc.
